Chapter 1 - Experiencing Some Growth

Bright lights faded in and out around Mia. They were blurry, unfocused, but she could tell they came in long strips. Loud bangs and shouting voices echoed in her eardrums, though the ringing in her ears refused to let any words through. She couldn’t smell anything but copper, intermixed with the sharp odour of bleach. Her mouth was awash in a flavour that made her want to vomit, however that was impossible. There was something on her face, yet she couldn’t tell what it was.

Then everything went dark for a long time.

Mia’s eyes shot open. She ran a hand through her sweaty hair with a groan, then glanced at her alarm clock; 6:42AM. School wasn’t for another two hours. Another groan preceded a disgruntled nicker as she stood up, hooves clicking on the hard, linoleum floor of her government funded home. Even after all those years, she was still adjusting to the way her body moved.

Lights clicked to life around her as she entered her spacious bathroom. Her coat could do with a good wash after that dream, though it was more akin to a flashback. Mia pulled off her shirt, sighing softly when her breasts bounced into freedom. Had she been a normal human, they would have netted her several boyfriends already. As a centaur, however, most were intimidated or freaked out by her appearance.

Not that she could blame them. Mia paused in front of her mirror, one large enough to reflect her inhuman body. After an accident when she was on the cusp of womanhood, she was left completely paralysed from the waist down and orphaned. The details of the incident were hazy, the best explanation being a serious car crash. Mia never experienced being a paraplegic, though.

Without any known relatives or guardians to contact for permission, she was given an experimental – highly experimental – transplant. For reasons that were still unknown to her, her bottom half was replaced by that of a horse. But not a mare as it should’ve been, given Mia’s obvious gender before. It was a stallion’s body, which complicated several matters for the young girl.

The most obvious was having to learn to walk. Through means that went over Mia’s head, her body had acclimated almost perfectly to the equine. Her nerves, muscles, blood, cartilage and so on were all connected. The stallion had been young, a near equal for Mia’s own age at the time. Walking came quickly thanks to an expert physiotherapist. Living with two sets of hormones pumping through her, however, was another matter.

No matter what the hospital and specialists tried, her bodies were at war with one another. At least for most of her teenage years. In the end, she could argue that the benefits spoke for themselves. Mia shook her head as she glanced down at her lower half’s reflection, noting the heavy sheath that bobbed and swayed beneath her second belly.

She put most stallions to shame in that respect, while her upper body did the same to human women. Mia tore her eyes away and walked into her specialised shower stall, the water jets activating shortly afterward to douse her in warmth. The perks of having an unauthorised surgery performed on her was that she became an invaluable research subject, as such they paid for her living expenses and made sure she was content. In return for several monthly tests.

Aside from being the first centaur, Mia’s life was relatively normal. She finished high school with decent grades, managed to get accepted into her college of choice, and even managed to get a few friends who didn’t treat her as a novelty. For a time, she was famous simply for existing, then the fame wore down and she became a spectacle, but not one that caught everyone’s eye anymore. Of course, there were always going to be people who tried to shame her for something of her control.

Mia grunted as she tried to fit her bra. Her breasts were unnaturally perky on their own, barely sagging enough to stave off the accusations that they were fake, but a she preferred to wear the undergarment. It was comforting for her to use something meant for humans. Though, now, it tried hard to remove that comfort by constricting the life from her bosom. Mia grunted and gave up, letting it fall to the floor.

“Must’ve shrunk,” she decided and grabbed a newer set, but met the same results, “Or maybe not.” Mia sighed, hands moving to weigh her abundant bust. The mounds felt almost impossibly heavier, enough that most women would brush it off. Mia, on the other hand, had to notify her doctors of the change. If her body was still developing, then they needed to know.

Mia eventually managed to locate a bra that wouldn’t bite into her breasts. It was still uncomfortably tight, but she could ignore it. The centaur tugged a shirt on, grimacing at how taut the fabric stretched around her chest. It barely reached where her hips merged into her fur. She didn’t have to cover her lower half, since it was technically considered an animal. Though Mia had caught more than a few girls glancing at her sheath.

Next came her favourite part of her day; the journey to her campus. Mia lived on a piece of farmland, made with the intent of allowing her plenty of freedom and exercise, though it put her several miles away from her college. She didn’t mind. There was a straight path leading toward it, one that she had pounded into the ground herself. She made sure her bag was secure and took a long breath of the open air.

With her lungs full and her mind focused, Mia quickly built into a powerful gait. Her hooves slammed into the dirt below, overriding her past imprints. The wind caught her long hair, casting it behind her like a neon pink cloak, and rippled through her fur. Freedom was the best way she could describe the sensation.

Her muscles pumped in harmony to propel her forward at speeds few humans could experience. The rise and fall of her breasts made her more than aware of gravity, but her legs all but ignored it as they galloped across the earth. Mia’s hoof falls turned from dull thuds into sharp cracks against the concrete as she entered civilisation. She slowed down to a gentle trot, sighing in dismay.

“Cheer up, Mia,” an optimistic voice dictated, its speaker coming to sling an arm over the centaur’s flank, “You can run whenever you want, right?”

“Yeah,” Mia exhaled, her breath barely affected after her exertion, “But still…” She turned back to look at Annie, her friend since freshman year.

“If it helps, I could show you another exercise, wink, wink,” said another voice. This time, they approached from the front and laid two hands upon Mia’s breasts, fingers squeezing rhythmically, “I’ll never get tired of these.” They sighed and winked at the centaur.

“Quit it, Keira,” Mia shuffled back, escaping the perverted grasp of her other friend.

“Yeah,” yet another voice entered the fray, this one deep and heavily accented, “Not like you could handle her anyway.” It teased, the new arrival stepping into view. Rhona, a British native with Jamaican heritage, grinned teasingly at Mia, who sighed in response.

“Guys, I told you before, I’m just not looking for any relationships right now.”

“We know,” Annie said, patting Mia’s rump soothingly, though her fingers lingered longer than Mia was comfortable with. Particularly since Annie was the only that didn’t flirt with her.

“Doesn’t mean we can be friends with benefits, right?” Rhona winked, puckering her lips at the centaur. Mia rolled her eyes at the display and moved around the foreigner. The other three quickly moved to walk on either side of her, keeping pace despite her longer steps.

“Did you get taller?” Keira inquired, comparing their height. She only came up to Mia’s shoulder now, though she swore that she was level with her chin just a week ago.

“Maybe I’m not done with puberty yet?” Mia shrugged. At age 20 it was possible that she was still growing up, though she hadn’t noticed any differences in two years. It would explain why her bras refused to fit.

“Great,” Rhona groaned, “Now you’re gonna have even bigger tits.”

“Like you care,” Mia laughed, playfully hefting her breasts in her hands. A spark of pleasure rocked through her at the touch, however, causing her to quickly release them. She bit her lip to keep from letting on how good that had felt. They were never that sensitive before, even during her teenage years.

“Can’t argue with that,” Rhona agreed, glancing sideways at the hulking pair of breasts. Mia ignored the look, focusing on making sure she didn’t walk into anyone. It happened more often than she wanted to admit. Being almost seven feet tall made it easy to miss others.

“Hmm,” Keira murmured disgruntledly, looking at her own diminutive chest. She was athletic in every respect. Her curves were slight, and her muscles lightly toned, while her hair was tied back in a high ponytail. Competitiveness ran through her blood as fiercely as she would sprint across the track.

“Don’t worry, baby,” Rhona chuckled, slinging an arm over the much taller girl’s shoulders, “If I get any bigger, I’ll lend you some of mine.” It wasn’t much of an exaggeration either, as Rhona sported a pair any woman would be proud to have. Though they weren’t much compared to Mia’s own ridiculous bust.

“Wait, ‘lend’?”

“Well, yeah,” Rhona looked aghast, “You can’t expect me to permanently give up some of my boobs. I need all I can get.”

“Like hell you do,” Annie chided, staring at the busty girl, unimpressed by her statement. Mia glanced at her shortest friend, whose petite body was more of a blessing as it made her curvy rear more pronounced. Not that Annie relied on genetics to keep her butt large and pert, if her frequent power walks and fixation on squats were anything to go by.

“Guys, guys,” Mia caught their attention, “You’re all great in your own way.” They stared at her in silence for a moment, “Uh… do I have something on my face?”

“No,” Keira giggled and hugged the centaur, “Just thought you were going to break out in High School Musical or something.”

“Way to bring back the dated reference,” Annie chortled.

“It’s not that dated. The third one was, what… 2008?” Keira frowned.

“Whatever,” Rhona shrugged and paused at a door, “Here’s my stop. See you guys at lunch.”

“See ya,” the three all waved goodbye and continued to their own classes. Occasional glances found their way to Mia, but that was nothing new for the centaur after half a decade of being in the spotlight. Keira was next to leave the group, heading off to practice. Annie and Mia shared the same classes, as such they walked together.

What was normally an interesting lecture on socioeconomic statuses of minorities quickly lost its lustre. Mia found herself constantly shifting her shoulders, rolling them one by one to try and relieve the discomfort of her bra straps. It felt like they were trying to cut into her skin. She knelt at the back of the room at her custom desk, so there was little chance that she’d be seen removing her bra.

Mia quickly unclasped the torturous garment and let out a deep sigh of relief. She hadn’t noticed it, but the damn bra had been making it hard to breathe. With her chest no longer constricted, her thoughts turned to why her bra, that had mostly fit fine earlier, would become so painful. It was one thing to grow overnight, but to grow during the day just didn’t happen. She hadn’t drunk any more than normal, so it couldn’t be water retention.

The centaur leaned her head into her palm and inhaled deeply, then exhaled in a soft gasp. Her shirt had dragged across her nipples, but it didn’t feel like normal. It was more akin to a teasing hand, one trying to entice the nubs into erection. And with nigh-immediate results. Mia glanced down and saw her peaks stiffen and tent her shirt.

Like her breasts, they seemed bigger than usual. She quickly gathered her possessions and stood up, gesturing to the lecturer that it was an emergency. The college staff were all aware that she may have to randomly leave due to unforeseen issues, and this certainly classified as such. Mia shot Annie a nervous glance, before exiting the room with her bag held in front of her heavy chest.

“Doctor Roshni? Yeah, it’s Mia. Somethings come up. I… I think I’m growing, like really quickly… My bras were really tight this morning, now they’re unwearable… uh huh… Friday? Really? But, what if it gets… okay… okay… I’ll keep you updated… bye.”

Mia groaned when she pulled her phone from her ear. It was just her luck that something comes up and her personal doctor, the one responsible for looking after her when something weird happens, is on vacation. Friday was four days away. Who knew what could happen in that time?

She couldn’t go to any other doctors either. They would either take longer to get briefed on the situation or not fully understand it. Only a small team were privy to all of Mia’s details, to maintain secrecy about her procedure until they were certain it was more viable. There were doubtlessly other options open to her, but Mia couldn’t find the will to consider them.

Her thoughts were preoccupied with the arousal palpitating through her veins. It was rare that she would get so flustered, even around girls she had crushes on or when watching porn, but now she could hardly bare the warmth. Her cock peeked out from its sheath, trying to mimic her rebellious nipples. Mia paced in her private restroom, trying to clear her head with the rhythmic click of her hooves. To no avail.

“Dammit, why now?” Mia grumbled and massaged the sides of her head.

“Mia?” Annie’s voice filtered in through the door, catching Mia’s attention, “Can I come in?”

“N…” Mia swallowed back the word, “Uh, sure.” She could use some company right now. The bathroom door swung open and Annie quickly stepped in, broad hips swaying with her strides as she approached the centaur.

“What’s up? You looked freaked out back there.”

“It’s nothing… I hope,” Mia breathed, thankful to have someone there to take her mind off her body’s strange behaviour, “Might just be going through a little growth spurt.”

“Oh?” Annie thinned her eyes and stepped closer, coming to a stop when she stood face to breast with Mia’s bust, “Yeah, they look bigger.”

“You can tell?”

“Just because I don’t ogle your tits like Rhona, doesn’t mean I’m not staring,” Annie smirked, eyes twinkling softly. Mia stepped back and looked away, thrown off by the statement. Rhona and Keira made no secret of their attraction to her, but she’d always thought that Annie would just be a normal friend.

“Thanks, I guess?” Mia frowned when she saw Annie move around to her side, “What’re you doing?”

“Dunno,” Annie admitted with a heavy breath, “Hey, Mia?”

“Yeah?”

“Am I attractive?” Annie leaned forward, resting her arms and head on the centaur’s back. Her breaths brushed across Mia’s fur, soft as a hand’s caress.

“What?”

“I know I’m not tall like Keira, or big like Rhona,” Annie continued, brow furrowing in a mix of confusion and frustration, “But do you think I look good?”

“Y-yeah,” Mia nodded, finding her eyes inevitably drawn to Annie’s most distinguished feature. It was hard to deny that the small girl was attractive, with her sleek frame, cute face and ass that put most to shame. The full cheeks stretched her shorts tight against them, while the curve of her spine acted was almost like a shelf. Annie smiled warmly at the centaur, her expression reminiscent of a mother’s, “You’re pretty hot.”

“I am?” Annie pressed, one hand sliding down Mia’s side to brush against her soft underbelly.

“Uh huh,” Mia sighed. The touch felt so nice; sweet and soothing. She unconsciously pushed herself closer to Annie, nickering under her breath, “You’re kind and cute… soft… and your butt…” Mia trailed off, hands moving to her breasts of their accord. A pulling sensation registered in her lower half, but she ignored it.

“My butt?” Annie teased, her other hand reached down to smack a check. The slap resounded throughout the room, echoing in Mia’s ears.

“Yeah,” Mia breathed, her exhales gradually hastening as she massaged her tits, “I can’t help but look when you bend over. Or when you’re walking away. Or when you cock your hips to one side.”

“It’s sexy, right?” Annie cooed, hand moving further down Mia’s underside, “But you’ve never seen it naked, have you?”

“No… I want to though,” Mia admitted.

“I’ll show you,” Annie said, pausing her strokes, “If you show me your boobs.”

“Sounds fair,” Mia agreed and hooked her fingers under her shirt, then pulled it from her top, allowing her breasts to bounce into the open air. Her nipples poked out further than ever, twitching with every other beat of her galloping heart. She panted softly, her body warm all over. The clang of metal hitting the linoleum floor brought her focus back to Annie, who now stood with her ass naked as ever. Mia couldn’t see any panties in sight.

“I like going commando,” Annie revealed with a shy grin. She walked back to Mia’s front and turned around, baring her rear to the centaur, before bending forward and reaching back to pull her cheeks apart, “So… what do you think, Mia?”

The centaur licked her lips but remained silent. Her gaze was captive by the view before her, chained to the spectacular swell of Annie’s cheeks and the glimpse of what laid beyond them. That pulling from earlier returned with greater fervour, then abruptly ended. A subtle breeze drifted through a vent and brushed along her sensitive appendage. Mia’s breath hitched in her throat when she realised that she was erect.

Around another person. Mia had always been too self-conscious, and her body too chemically unstable, to become erect before. She’d experienced it on occasion, like after a steamy dream or fantasy, but never around others. But here she was, standing behind a half-naked Annie with an erection most stallions would be jealous of. Mia’s mind darted to when her doctor had measured her erection in a controlled session.

It was two feet long and more than three inches wide at the shaft. Every inch of that enormity was on display, hanging under gravity’s sway despite the rush of blood and desire. Mia’s vision thinned to a pinpoint, completely and utterly fixated on Annie’s plush ass. Everything else was blacked out. The sterile white walls, the sinks and stalls, even the door was lost to her. In her gaze, there was no way out of this.

Annie’s head entered her sight. The girl’s face was flushed a deep red, her breaths were long and heavy, her lips were parted, and her eyes wide. Those orbs of pale blue copied Mia’s own, chaining themselves to the centaur’s massive, perky tits. Only when the centaur shifted from one hoof to the other, did her eyes stray and become enamoured by a far more incredible sight.

“Mia?” Annie gasped, breaths laboured, “Are you… do you want to use that?”

The question was unnecessary in Mia’s mind. Of course she wanted to use it, that was why she could feel every slight wisp of air on her cock or sense the sheer weight of it whenever her heart beat, and why she couldn’t take her eyes off Annie’s beautiful ass. She only managed to look away when Annie stood up and turned back around.

She walked over to Mia and paused in front of her. Annie rose on her tip toes and tilted her head, lips finding and capturing a nipple. A gasp met her audacious action. It turned to a low, husky moan when Annie brought her hands into the mix, groping and massaging the abundant flesh. Her tongue lathered the pulsing nub while she suckled on it, pulling the peak deeper into her mouth. Mia’s hands twined themselves in Annie’s hair and drew her closer.

“Annie,” Mia moaned, panting heavily as the girl switched nipples. The abandoned tip glistened with saliva and shuddered in the cool open air, reaching out almost an inch away from her breast. A finger and thumb quickly caught it, pinching and twisting the nub just right, “Fuck. Stop!” She jerked Annie away.

Both panted heavily as they stared at one another. Annie’s hands continued their ministrations, working the twin peaks like a pianist would their artform. With a nervous gulp, and a conversely lustful lick of her lips, she leaned down until her hands could reach Annie’s upper thigh. The girl spread them apart helpfully and moaned when a finger traced along the cleft of her pussy.

“You want me?” Mia rasped, awed by the sheer moisture.

“Yeah,” Annie nodded, undulating her hips in obvious need, “I wanted you since we met.”

“I could rip you apart,” Mia tried to reason, however her lust only continued rising in dominance. She wanted to test her words, to try and shove every inch of her monstrous sized cock into this small, slender shouldered girl. Annie could possibly handle it with her clearly wide hips.

“Yeah,” Annie cooed and shuddered, a rope of her pussy juice falling to the ground, “You wanna try?”

“Fuck yeah.”

Chapter 3 - Experiencing Some Lust

Mia groaned and shut her alarm off as she rolled back onto her legs. She ran a hand through her hair, untangling any knots from her tumultuous sleep, and sighed at the heavy sensation of her cock flopping about. The fact didn’t surprise her, not after the slew of dreams reliving every moment with Annie yesterday. A subtle moan slipped past her lips at the memories.

They say that no one forgets their first time. Mia could absolutely see what it meant, for her body distinctly remembered the sensations from less than twenty-four hours ago. She couldn’t act on the desire churning in her dual-bodies, however. It was one of the few moments that she lamented her physiology. If she could just reach her cock, then she might be able to experience a fraction of yesterday’s pleasure. Just the thought was enough to make her member lurch in longing.

She blew a lock of hair out of her face and trotted into her shower. It was her best bet at ignoring all the wild thoughts pervading her mind. And perhaps even find a way for it to get her off. Mia gently slapped her face, groaning at how one experience could change her so much. Sex and pleasure were the last things on her mind before.

“Ignore it, and it’ll go away,” Mia murmured to herself, glancing at her mirror along the way. The click of her hooves paused and gave way to deafening silence, the final step echoing off the walls in a poor attempt at filling the void. Her eyes ran over her reflection, or what the mirror could show. It was seven feet tall, designed for her to see everything about herself. Yet now it barely showed her shoulder blades and lower. She couldn’t see her rump either.

Despite her sudden burst of height, her breasts looked no less huge on her frame. They still sat with their lower curves encroaching on her navel, but no further. She took a step forward; the fall of her hoof eerily muted in her ears and brought her cock into view. Just like the rest of her, it had grown. To her relief, it wasn’t as extreme as her height gain, though it would be hard to miss if anyone knew her previous size. Even her sheath looked a couple of inches bigger. As were her balls.

She took several deep breaths. Her heart reluctantly calmed its frantic gait, the echoed throbbing fading within her enlarged shaft as well. The centaur felt her breasts, only to release them with a coo of pleasure, before touching the rest of herself. Everything seemed normal, no aches or stretch marks on her skin, which unnerved her. Something like this should’ve hurt or at least showed some strain on her body.

Mia shelved the notion of a shower and rushed back to her room. There was no disorientation or clumsiness despite her new physique, as if her sleeping body had already adjusted her spatial awareness. She ignored the curious thought and grabbed her phone, then frantically dialled Doctor Roshni’s number. The centaur paced around her room, growing increasingly impatient at the ringing on the other end. It eventually went to voicemail.

“Great,” Mia muttered and tossed it onto her bed. She took another soothing breath, fully aware that letting herself panic about this situation wouldn’t help at all, “And it’s really not that bad.” She continued aloud, once again taking stock of her enhanced form. Her muscles were still present, and nothing seemed out of proportion. If she had a better eye for it, Mia might’ve even thought she looked better than ever.

“Always a silver lining,” Mia assured herself, recounting her parents’ favourite saying. If nothing else, Annie would undoubtedly appreciate the extra inches on her penis, assuming they did it again.  The centaur bit her bottom lip. They had crossed a line in their friendship, one that movies would have her believe there’s no going back from.

Did she even want to? Mia shook her head, uncertain if she was answering her unspoken question or trying to remove the thought. Either way, she pushed it aside and returned to her usual morning routine.

Her shower was made to give her plenty of room to move. The growth spurt compromised some of that freedom, however Mia remained comfortable as she enjoyed the warm water spraying against her, washing away any grime on her coat and her privates. Fortunately, the mundane task took her mind away from her burgeoning desires. Her cock retracted back into its sheath, offering a begrudging throb.

Mia idly ate her breakfast as she looked over her latest assignment. It wasn’t hard, just tedious in the worst possible way. She sighed and set it down, already dreading the boredom that would eat away at her. At least it wasn’t due in for another week. A smile teased her lips as she entertained the idea of using her volatile body as an excuse, though it would never work. Her college was infamous for giving very little leeway.

All thoughts were brushed away when she stepped out into the open air. Regardless of boring assignments or her absurd growth spurt, the joy of running couldn’t be taken from her. Her legs worked like a fine-tuned machine, pounding the earth into the shape of her hooves, as they carried her forth. Everything was just right that day.

No stray animals or branches to get in her way. The wind was blowing against her back, and the sky was clear. Mia closed her eyes, indulging in her other senses for just a second. Her gallop made her cut through the air, parting it like a bullet. For the briefest moment, she could almost believe that she was gliding. Her nose picked up the mud and bark around her, mixed with the natural wildness of the animals spread throughout. She smiled to herself when she heard a human’s grunt.

The expression tightened into a frown as a moan soon followed. Mia slowed her gait, coming to a stop just a few feet from the sidewalk. She opened her eyes and scanned her surroundings, undeniably curious by the strange sounds. The centaur knew that some people liked to fool around in a public space, but she never thought it’d happen so close to her. It wasn’t hard to spot the couple amidst the earthy brown and green of the forest.

A girl had her panties hanging from her ankle, while she was being held against a tree. Her partner had his pants around his heels, while his hips thrust wildly against the woman. Both seemed oblivious to the possibility that they would be seen, as the girl made no attempt at subtlety. She demanded more and more, arms and legs locking around the man.

Mia couldn’t tear her eyes away. Every moan the girl made was like a shove to her subconscious, forcing all the sounds Annie had made to the forefront of her mind. The centaur gulped and licked her lips, envisioning herself and Annie in much the same position, constantly on the fringe of being caught. A pulling sensation yanked her back to reality as the breeze brushed against her peeking cock.

“Fuck, fuck, fuck,” Mia grumbled and rushed away, leaving the couple to their fun.

She stepped onto the campus with a heavy exhale of relief. Crisis averted, Mia thought as she trotted toward the main building. Her friends stood or sat at the base of the stairs, awaiting her arrival. It was Annie who spotted her first, waving to the spontaneously taller centaur. The others turned their eyes to her, smiling welcomingly. Then all their expressions turned to shock as she neared them.

“Hi,” Mia said, unable to think of anything better given their amazement.

“Hi,” Annie answered and walked over to stand beside Mia, finding that she was barely eye level with the centaur’s nipples now, “You’ve grown.”

“I’ll say,” Rhona added, finally recovering, “What’re you now, girl? Eight feet tall?”

“No idea,” Mia flushed as the ebony girl stepped close and critically eyed her body, visibly taking note of how much large Mia’s breasts had grown.

“Fantastic,” Keira muttered, stomping over with a mock scowl on her face, “Why couldn’t you just be a giant from the start?” She clapped onto Mia’s horse half, which now came to her eyes.

“It’s nice that you can still surprise us,” Annie said, catching Mia’s eye with a wink as the petite girl’s hands stroked along the centaur’s silky fur.

“Y-yeah,” Mia flushed, looking away to avoid her own fantasies, though it was impossible to completely remove the visage of Annie’s delectable ass from her mind. She choked back a moan as Rhona’s hands abruptly latched onto her breasts. The warmth of her hands seeped through Mia’s shirt, which rubbed against her tender flesh.

“How the hell are they so perky?” Rhona wondered aloud, still fondling the huge breasts.

“S-stop,” Mia gasped and stepped back, pushing Rhona’s hands away. The centaur wrapped her arms around her chest, both to protect them from the dark-skinned woman and to hide her erect nipples. They gradually calmed under her fear of embarrassment, though she remained no less cautious of Rhona’s perverted hands.

“Sorry,” Rhona apologised and pocketed her hands, “I like to touch.”

“I know,” Mia groaned, recalling their first meeting after Annie introduced them. Rhona had wasted no time and groped her then as well, though it hadn’t been nearly as intensely pleasurable as that moment. Not to mention that it had only been playful all times prior, rather than the flirtatious and despicably licentious touch from recent months.

“Just be glad you have something to grope,” Annie added, smiling up at the centaur.

“Yeah,” Keira agreed, then glanced at her home. We’d better hurry up. Our classes start soon… I’ll race you inside, Mia.”

“What?” Mia blinked at the proposal. The outcome would be obvious. A human couldn’t outrun a horse, much less a dog.

“You chicken?” Keira teased, thinning eyes and inhaling to make the appropriately childish noises, accompanied by the usual gestures. The other three rolled their eyes at her.

“Fine,” Mia relented, “Just don’t come crying to me when you lose.”

“I might do something else,” Keira murmured, soft enough that Mia only just caught the words. She paid them no mind, though, and led the athlete to the campus gates. Annie and Rhona followed them, both muttering to each other.

“First one to the steps wins,” Keira stated and smoothly fell into her sprint form.

“Sure.”

“Who wins what?” Rhona interjected, smiling mischievously at the pair.

“Ooh, a bet?” Annie smirked.

“How about… winner gets to make the loser do any one thing for them,” Rhona decided, before joining the two. Annie soon did the same, winking up at Mia.

“Anything,” Annie mouthed the word and shook her hips, beaming when Mia looked away with a fierce blush on her face.

“Within reason,” Mia added, though she doubted that the stipulation would mean much to Annie. Just a glimpse of the girl’s eyes told Mia that she was more than willing to fulfil the agreement.

“Whatever… ready? Three, two, one… GO!” Keira shot off like a bullet, slicing through the air with her practised technique. Her footfalls echoed off the concrete below, sounding heavy enough to crack the ground. Rhona, then Annie took off as well, though they had no chance of catching up to the star runner. Then Mia launched herself forth.

The unmistakable gallop of her hooves caught Keira’s attention. The track star turned and saw the centaur approach rapidly, leaving Rhona and Annie in her dust. Her powerful legs and body worked perfectly together, in an instinctive symphony that no human could fully understand. Mia’s chest sailed past Keira, followed by the rest of her. A sharp slam of hoof on stone sounded her victory, while Keira and the others trailed after her.

“Too… much… exercise,” Rhona panted as she doubled over. Drops of sweat slid down her face and glistened on her dark flesh. She was the least active of the four, preferring the internet and video games to honing her body. Still, her longer legs gave her enough of an advantage to just beat Annie.

“Right,” Mia clapped her hands, looking down at them all with a devious smirk, “Rhona, you can’t grope me without permission, ever!”

“But…”

“Keira,” Mia continued, ignoring the ebony girl’s protests, “You have to go commando one day this week.”

“Fuck,” Keira groaned.

“Annie,” Mia looked to the shortest girl of the group, whose face was alight with anticipation poorly hidden by a concerned frown, “I’ll tell you yours later.”

“Aww,” Annie whined.

“Shut up, you got off easy,” Keira grumbled, “My thighs are gonna have chaffs on the chaffs.”

“Yeah, and how the hell am I supposed to resist touching them big ole titties?” Rhona whinged, flexing her hands as if she already mourned the loss.

“Don’t know, don’t care,” Mia quipped and trotted into the building, “Now, come on. We’ll be tardy at this rate.”

The three joined her. Keira’s breathing had returned to an even rhythm, while Rhona was still haggard as she wiped sweat from her brow. Annie looked natural, having only run with the intent of teasing Mia. The centaur knew that from just a glance at the short girl, whose face bellowed her desire. Mia did her best to ignore the obvious lust, focusing herself on surviving the day first and foremost.

Mercifully, class remained the same despite her new height. Some of her classmates murmured amongst themselves, but none of them outright gawked at her. Mia folded her legs to sit down, exhaling in relief that her personalised desk was adjustable.

“Okay, everybody!” The teacher announced her arrival, the clicking of her heels only making it more apparent. Mia trained her eyes elsewhere. She hated this teacher, no matter how good at her job she was. It was the voice that was the worst. The eyes could be ignored, but her voice pierced any music or conversation like a steak knife through paper. And Mia had every reason to suspect that she was racist solely against her.

It wasn’t unreasonable. Mia had met dozens of people like that, who thought her existence was a sin against life itself. But none had grated on her like this educator did. She slowly exhaled, envisioning all her concerns leaving in that breath. It was only one class every week. Nothing more.

Though it’d help if her shirt didn’t feel so tight. Or if she had a bra that fit. Or if her thoughts didn’t stray every few seconds, always finding their way to the image of Annie’s backside, or lingering on the possibility that she would keep growing. Mia settled into the routine as the lecture began and her eyes remained locked on the chalkboard. Away from Mrs. Flannigan’s condescending green eyes.

Mia adjusted her shirt, hoping to relieve some of the tightness around her chest. It was lunch period now, a reprieve from the hours long lesson with Mrs. Flannigan. Her friends sat around her, their spot on the grass all but carved out by the centaur.

“Don’t how you can put up with her,” Keira growled, taking a deep bite from her salad, “I nearly decked her after one class.”

“Yeah,” Rhona agreed, “Why the hell are you even majoring in economics?”

“I want something kind of normal,” Mia explained, flicking her tail, “Desk job, family, kids, grandkids, etc.”

“Who’d you even marry?” Keira inquired, arching an eyebrow, “You never even say hello to someone if we don’t introduce you.”

“You done expositing about my life?” Mia asked, dryly.

“The point still stands,” Annie continued, “I mean, you’re not exactly putting yourself out there.”

“I know,” Mia lamented, hanging her head.

“What about us?” Annie piped up, catching their attention.

“What?”

“Why don’t you marry one of us?” Annie continued, eyes darting between them innocently.

“I… you guys are my friends,” Mia blushed, looking anywhere but at the trio around her.

“I wouldn’t mind,” Annie stated, taking a large chunk out from her sandwich.

“It’d probably be fun,” Keira mused.

“I’d only do it if you proposed with a huge ring,” Rhona laughed, “Although, imagine being married to a centaur.”

“The honeymoon,” Annie giggled, aiming her smirk at the centaur.

“She’d tear you open, Annie,” Keira chortled.

“Don’t be so sure,” Annie whispered.

“Did you two fuck?” Rhona asked with wide eyes and a growing grin.

“Me?” Mia blanched at the question, a fierce blush darkening her cheeks.

“She’s too shy to do anything like that,” Keira rationalised.

“Then what about what Annie said?” Rhona countered, arching an eyebrow expectantly.

“It’s just my dreams,” Annie laughed, “Don’t take everything so seriously, Rhona.”

Mia replayed the conversation in her head as she sat in her final class. Her shirt felt like it was trying to constrict the life from her, the form fitting garment clinging tight to the swell of her breasts and the dip of her waist. It was designed not to ride up and show her stomach. Now that aspect was tormenting her.

Not as severely as the fantasies looping around in her head were. Mia tapped her notebook with her pen, unable to concentrate on the lesson. None of her friends seemed against the idea of being with her, despite her being a centaur, much less that she had a cock most women would flee from.

“Why’d they have to say all that?” Mia questioned aloud, her mind submerged in visions of a honeymoon with all three of them. She had more than enough dick to go around after all. They could kiss and lick it together, even when she was… the centaur bit the inside of her cheek, snapping herself from the visions with the pain. Her cock throbbed in its sheath, eager to make her fantasy a reality.

“Look,” someone muttered to her right. Mia turned and saw a row of girls pointing in her direction, their eyes staring intently at her. She frowned, then twisted her head about to peer at her equine half. Realisation pulled her lips apart in disbelief; the tip of her member had slipped out from its home. She adjusted herself, moving to conceal the sight. The girls giggled at her move. Mia’s face burned hotly. At least her nipples behaved themselves.

Finally, Mia thought as she stepped out into the free air. Annie quickly came up to her side, striding in pace with the centaur.

“Any plans for later?” Annie inquired.

“Shopping,” Mia answered, pulling on her shirt yet again. She swore the individual threads were digging into her flesh now, though it didn’t make a difference to the fact that it was much too tight.

“Want some help?” Annie offered, “Always good to get a second opinion.”

“Annie,” Mia sighed, rolling her eyes at the petite girl.

“I mean it,” Annie insisted, “But if you want…” she trailed off, hands running down her body to cup her rich ass.

“Later,” Mia vowed. She couldn’t refuse her body, not when her fantasies kept threatening to overwhelm her. Or when Annie, herself, seemed completely besotted with her. The centaur smiled at her friend.

“To the mall!” Annie announced, “Then to bed.” She added with a sly grin.

“Is that all you think about?” Mia laughed as they headed to the nearby mall.

“Now it is, yeah,” Annie admitted with a nonchalant shrug, “Can you blame me?”

“No,” Mia shook her head, “I guess I can’t.”

Mia fidgeted as she perused the racks of shirts. Her current top felt ready to give in at a moment’s notice, a sensation she wanted to avoid with the new ones. She didn’t like loose clothes, especially now that her nipples were sensitive to the slightest touch. Lycra was an immediate option, yet it couldn’t be all that she wore. Being a centaur didn’t change the fact that she liked to be somewhat fashionable.

“What about this?” Annie held up a button-up tee.

“That could work,” Mia nodded, adding it to the pile. She rolled her shoulders, hoping to relieve some of the ache in them. The stitching was certainly cutting into her now, pulled tight by her breasts. It had to be water retention, she decided. No one grew during the day, or not enough that it was noticeable, “Alright, I’m gonna try these on. Could you find me some bras?”

“Sure, what size?”

“Uh,” Mia looked down at her bust, estimating her size, “Try a 36K… no, 36O,” she quickly amended, reminding herself of her height.

“Jesus Christ,” Annie muttered with a shake of her head.

“Try and find some that’re bigger if you can,” Mia added.

“Got it!” Annie called as she departed on her quest to find the biggest bras she could. Mia stepped into the changings rooms, curling her body slightly to fit, and went about trying her myriad of shirts. She hooked her fingers under her top and pulled it up, grunting with the strain it required. It might’ve looked painted on to anyone who didn’t know better.

Mia exhaled heavily when her breasts were finally free. Faint lines marred her smooth skin from where the threads had cut into her. She grimaced at the sight, relieved that she took it off when she did. The centaur pulled the button-up over her shoulders and fastened it, sighing softly as the fabric brushed against her nipples. It was tight around her chest, making it a tumultuous task to fasten the top buttons. Even when she did, inches of her bottomless cleavage were visible.

A bra would be a godsend if only to keep her clothes from rubbing against her nipples. She had to bite back a moan as she tried the next shirt, the slightly coarse material grazing her tits like calloused hands. After every top, her desire rose from the rhythmic teasing of her nubs. They stuck out from her breasts like sore thumbs. Their size was a perfect match for the simile.

Mia panted softly when she finally finished. It took every ounce of willpower to keep her arousal in check. She calmed herself by folding the shirts, glad that each of them seemed a suitable size. Though she couldn’t guess how long that would last if she was still growing.

“I got the bras,” Annie announced, holding them over the door.

“Thanks,” Mia and took one.

“You not gonna try on the rest?” Annie inquired.

“Uh, n-not right now,” Mia stammered, struggling to hook the massive undergarment. The cups were tight around her breasts, though they at least fit. Her band size was correct, thankfully, however she dreaded to think how long that would last.

“Getting a little worked up?” Annie teased, her head peeking out from under the door.

“Yeah,” Mia confessed, finally finishing with the bra. She tugged a new shirt over her head, glad that it no longer teased her nipples.

“Guess it wouldn’t help if I told you I’m going commando again,” Annie smirked, restraining a giggle at Mia’s reaction, “Or that I’ve been touching myself all day because of you?”

“Annie,” Mia cautioned, fully aware of her cock swelling in her sheath.

“I can’t get your dick out of my head,” Annie divulged, licking her lips with her eyes firmly locked with Mia’s, “The shape, the smell, the taste, the way it fucking tore open my cunt.”

“Fuck,” Mia gasped. She ripped the tag from the shirt and left her contact details, then barged out from the room, grabbing Annie along the way.

“Wh-where’re we going?” Annie stuttered, surprised by the sudden shift.

“Home. I don’t want to be seen here,” Mia stated, keeping her voice deadpan for fear of letting on how horny she was. Her hindlegs made her balls sway and rub against one another, while her sheath bounced with every step.

“Oh,” Annie yelped and sped up, “Then let’s hurry. My pussy’s soaked.”

“Stop it,” Mia moaned, her cock slipping further out. There were dozens of people crowding the mall, each of them talking with each other. Several looked her way, their conversations turning to discuss the centaur. They could see her cock if they looked a little further. Then what would they say? Mia hastened her steps to a brisk gait, forcing Annie to jog or be left behind.

“Hey is that…?”

“Who’s her friend?”

“Is it just me…?”

“Or do they look horny as fuck?”

The stray sentences flitted through Mia’s ears above the roar of the crowds. She might’ve imagined some of them, though that didn’t diminish the effect on her. Mia parted the throngs of people with her urgency, desperate to find privacy before her body wholly betrayed her. Worse even than Annie’s teasing, was that the possibility of her cock being seen by so many spectators made her heart race with lust. She wouldn’t make it back home without being spotted.

“There,” Annie alerted her as they exited the mall. She pointed to an alleyway, obscured by a loading zone that looked unused, and completely out of the public view. Mia hated the idea of doing anything in such a place, however she had to. If people saw her cock in public, there’d be pictures and rumours. Her college wouldn’t let her stay, even with the government’s insistence.

Mia slung Annie onto her back and galloped toward the dank sanctuary. Her cock flopped with her powerful gait, sliding out further and further as her arousal burgeoned without concern. The fear of embarrassment did nothing to dissuade it, her thoughts rampant with her desire.

She slowed to a stop. Annie disembarked from Mia’s back, stepped forward, before she unzipped her shorts and pushed them down. A slick sound brought her attention back to Mia, whose cock hung freely, let loose from its protective prison. Mia moved forward and hefted the petite girl in her arms, just as she had done yesterday. Their lips immediately found each other.

The kiss didn’t last long. Mia set her down after only a moment’s embrace. It was more than enough, however. The centaur’s new shirt was damp with Annie’s juices, her scent reaching into Mia’s nostrils and inciting her libido to greater heights. She grabbed Annie once more, a sudden desire taking over her body.

“What are… hey!” Annie yelped as she was raised once more, then turned upside down with her pussy mere inches from Mia’s lips. Its musk was incredible, Mia thought and pressed her lips against the engorged vulva, pushing her tongue past the slick folds and coating her taste buds in Annie’s flavour. Tangy and sweet swirled together around her muscle, assailing it. She suckled on the lips, inhaling the juices.

Annie had to clamp her hands over her mouth as she cried out in orgasm. Her pussy undulated around a phantom cock, warming up for the massive horse dick just a few feet away. The ecstasy persisted as Mia suckled, slurping up the abundant fluids with fervour. The juices flowed down her throat. It didn’t seem to go to her stomach, however, and instead travelled straight to her balls. Mia could practically hear her seed churning within.

“Fuck…” Annie panted heavily, leaning on Mia as her legs shook wildly, aftershocks from her climax shuddering up her spine.

“My turn,” Mia commanded, pushing Annie down onto her knees. The floor was clean, but certainly uncomfortable, “Be quick.”

“My pussy… it can’t handle more so soon,” Annie rasped, even as a trail of her juices streaked down her inner thigh.

“Suck it then,” Mia growled, “Just make me cum, please?”

“I am hungry,” Annie murmured and crawled under the centaur’s belly. The familiar musk slithered into her nostrils, singing a lustful song that made her very womb quiver in desire. She pressed her lips to the flared tip, slurping up a bead of pre-cum, before sliding her lips and tongue down the veiny shaft. Her mouth traced a large vein, feeling it throb against her. There were more than she remembered, each pumping with the sheer force of Mia’s lust.

The petite girl pushed her tongue into Mia’s sheath, licking up any dirt that she could reach. Mia’s taste was so strong there, like her cum was amplified several times, and her musk practically coiled around Annie’s head. She moved on, knowing that she had to sample everything about this magnificent cock before Mia came.

Annie soon came to Mia’s balls. They were huge, easily the size of apples. No, they’re bigger, she realised as she fondled one in her palm, feeling the sheer weight of it. A loud gurgle made her jump, before she realised where it came from. Annie’s pussy ached with longing, a puddle of her juices forming on the ground below. But she remained focused on her plan.

She wrapped her lips around one ball. It was much too large, though. She could barely taste a fraction of it. Annie slid her tongue out and lapped it along the leathery sack, moaning at the earthy taste mixed with the natural salt of Ria’s sweat. Her spit glistened on the black flesh, while the contents churned and sloshed about. Annie’s juices flowed thicker and faster with every passing second. Even if she did nothing else but suckle and lick on these sperm tanks, she would cum.

But there was something far better awaiting her. Annie tore herself away with a ragged gasp, then rapidly climbed back up the huge shaft to spread her lips wide around the head. A spurt of pre-cum shot against her throat. She nearly gagged on the abrupt release, before composing herself and swallowing it. There was no chance that she’d waste such a perfect opportunity.

Her hands coiled around the shaft as she slowly fed it into her mouth. It was better than she remembered, so thick and heavy and potent and strong. That was the way to describe it. Mia’s cock was powerful. Annie moaned lewdly around it, one hand moving between her thighs to finger her sopping wet cunt. It burned in need, her fluids like molten desire against her skin.

Annie coughed as she pushed deeper but ignored the discomfort. Her throat bulged with the shape of the centaur’s cock, its form dominating her. She inhaled deeply while her airways were still somewhat free, bathing her sinuses in Mia’s musk. The veins pulsed against her hand. It felt like she would be pushed off by the pulsations.

She tightened her grip and stroked along the shaft as she bobbed her head. Annie’s tongue was pressed completely flat by the indominable girth, its size exterminating the very idea of resistance. More. The one directive took command of her body as she shoved her face closer and closer to Mia’s musk laden sheath. Her cunt let down a deluge of desire, spilling it onto the concrete. Despite how utterly soaked her snatch was, Annie couldn’t smell it.

There was only Mia’s cock. Its power demanded that she worship it. Her hand glided along the length, squeezing out ounces of pre-cum to pour into her empty stomach. Warmth cascaded down her oesophagus like a waterfall, before her pussy expressed a smaller amount. She moaned like a common whore, silently begging for Mia’s cum.

“Give it to me,” Annie tried to plead, but her words were unintelligible gurgles, “Give me your cum, Mia. I need it. Please, cum down my throat? Cum in my belly.” The meaning carried across perfectly, however. The centaur began to thrust, sinking inches of her shaft into Annie. With Mia’s assistance, Annie’s lips mashed against the sheath in mere moments.

The entire cock was inside of her. It throbbed against her mouth and throat and oesophagus. She swore she also felt it in her stomach. Annie fondled a testicle in her hand, the orb overflowing her palm and fingers. Its owner moaned and nickered, then snorted. Her hooves stomped around Annie, counting the moments until she came.

“Annie,” Mia moaned from above, “Swallow it. Ah, god! Swallow my cum!” The centaur’s cock lurched within Annie’s maw, before it swelled, and the balls contracted. A second later and a blaze unlike any other inundated her middle, its heat spreading wildly through her. Her cunt squirted in response as a gargled screamed reverberated in Annie’s throat.

Mia’s cock wasn’t just bigger. Her scent wasn’t just stronger. Her cum had thickened as well. The torrent of sperm stuck to her insides, clinging to her like a babe to its mother’s teat. No, Annie corrected herself as she continued to swallow, that was her. She was helpless without Mia’s cock now. She needed it.

She needed its cum to complete her.

Annie came again at the affirmation. Her belly swelled out from her torso, rounding out into a semi-sphere of cum. Yet still more gushed down her gullet, rather, it spewed into her stomach like water from a hose. Not a drop made its way back up her oesophagus, depriving her of the flavour she craved. But she didn’t care. Every drop that piled into her swelling gut only made her body yearn for more.

Minutes or hours passed before Mia’s orgasm came to an end. Annie felt it as the tide dwindled to mere drops. Mia stepped away, sliding more than two feet of horse cock out from Annie’s abused throat. When just the head remained lodged inside, a final wave of cum flooded the petite girl’s maw. A single stream leaked from her lips as she savoured the heavy load.

“I love you, Annie,” Mia gasped.

“I love you too,” Annie tried to respond, though her vocal chords were completely coated in cum. The sentiment was heard, however.

Chapter 5 - Experiencing Some Normalcy

Mia yelped as the automatic doors slid shut around her rump. She hastily stepped forward and sighed, looking back at her larger than life body, which had only grown further since last night. The centaur hadn’t dared measure herself again, fearing how many inches she’d gained in just a few hours. At least she wasn’t tall enough to hit her head on her home’s ceiling… yet.

“Don’t look so down,” Annie pepped up, her small face peering out from beneath Mia’s floor-consuming breasts, “We’ll get you some new clothes, some food and then I can try out my top-secret massage.”

“Let me guess, it involves my dick?” Mia asked dryly, though she couldn’t resist a smile, “Come on, I’ll have to pick out new stuff now.” She ushered the petite human forth, while skittishly glancing around at the onlookers. Locals were used to a centaur walking through the mall, although not one that stood over eight-feet tall and had breasts as big as watermelons, which forced her present shirt to stretch futilely around them. The fabric didn’t even graze her belly anymore.

Mia was almost relieved that she didn’t need to wear any pants. It meant all the eyes that followed her sheath as she walked were insignificant to her, except for the girls that pointed to it and giggled. Their laughter reached Mia’s ears without fail, and they always made her face burn. She ducked her head to avoid looking at them, but that only put Annie’s hypnotic ass in view.

It filled her view despite being more than six-feet below her. Mia’s gaze drifted between each cheek, watching one rise and fall, before the other mimicked it a moment later. When she stops, it looks like a heart, she thought tracing every curve with her eyes. The centaur forced her stare onto the stores, watching for the one place that would stock her clothes.

“Mia?”

“Hmm?” Mia looked around at the sound of her name and soon found the speaker, “Oh, hey Keira!” She waved her over, eager to have another friend around. One that wasn’t constantly trying to get into her proverbial pants.

“What happened to you?” Keira gasped as she walked up to the centaur, leaning her head back to stare at Mia.

“Uh, still growing, I guess?” Mia shrugged.

“Makes sense,” Keira muttered, looking her up and down with a critical eye, “But why’d your tits have to get so much bigger as well?”

“Pfft, you wanna hug ‘em, I know it,” Annie piped in, smirking knowingly at the athletic girl.

“Annie,” Mia groaned, “So, what’re you doing here anyway?”

“Looking for some new sports gear,” Keira answered, “I take it you need new clothes.”

“It’s that obvious?”

“It is when your shirt looks more like a bra,” Keira laughed and pointed to a sporting good’s store, “That place sells really good spandex.”

“I, uh, I’d prefer some normal clothes,” Mia replied, nodding to her usual place.

“You’re just gonna end up outgrowing them,” Keira rolled her eyes. The centaur shrugged and walked to her normal store, her friends following close behind. They strolled through the plus-sized aisles, grabbing the loosest tops they could find.

“What about this?” Annie held up a sleeveless shirt with slits down the side, made to show off side-boob.

“I… think not,” Mia chuckled, and picked up a more conservative vest. There were enough eyes on her without showing off unnecessary skin. She slung a few more shirts over an arm, then headed to the changing rooms, leaving her friends to peruse the store without her. The centaur paused and turned back to Annie, “Don’t start anything.”

“Who do you think I am?” Annie feigned a hurt expression, but she nodded nonetheless.

“Start what?” Keira arched an eyebrow, glancing between them, before stepping up to the centaur with a cocky smirk. She inhaled and released it in a sigh, moving slightly closer, “You smell good, Mia.” The track star breathed in again, taking it in deliberately slow, as if sampling the finest bouquet or wine, or an intoxicating perfume.

“It’s sexy,” Keira commented.

“Uh, okay… see ya in a minute,” Mia ducked into the room and shut the door, closing the two out. The roof was fortunately higher than average. She frowned and raised an arm, then sniffed at her armpit, further deepening her wrinkled brow. Nothing smelled different. Was Keira just flirting? She shook her head and hung her potential clothes on the rack, before pulling her tight shirt off with a sigh of relief. Her breasts bounced in their freedom.

The centaur looked at her reflection in the customary mirror. She couldn’t see her face, or her shoulders, but her chest and sheath were in plain view. Her size did nothing to affect the shape of her breasts, each just as pert and full as when she was a teenager. Even without a bra, they sat upright, and her nipples poked out at the very peaks. If she was human, what man would be able to resist her? Not that it mattered.

She glanced to the door and listened closely. Mia’s hearing was better than most, for reasons that none of her doctors could discern. The best that they could guess was that her human attributes had acclimated to her horse-half, somehow augmenting her senses. She breathed softly and listened to her friends, envisioning them.

Mia smiled at her reflection and began to try on her potential purchases. Men didn’t interest her, that much was clear after her times with Annie. One of her hands groped her breast, fingers sinking deep into her supple flesh, as she recalled those instances in vivid detail. The centaur pinched her arm, silencing her thoughts.

“This had better not be a recurring thing,” Mia grunted and rubbed the mark her nails had left, then grimaced at the sight of her sheath in the mirror, noting that her tip had peeked out. Even with Annie safely hidden behind a door, she still set her off. Mia ran a hand through her hair, finding that, much like her entire body, it had grown greatly. Her nails also desperately needed a manicure.

A girl’s day out, she thought with a giggle. Mia couldn’t remember the last time she’d had a day like that. High school was spent in and out of testing while avoiding attention, something that was impossible being what she was. She lowered her gaze to stare forlornly at the long shirt in her hands. It would be too small for her in a day if this growth spurt kept up, maybe within an hour. The centaur tossed it onto the bench that had no use for her.

If life gives you lemons, make lemonade. Mia recounted the old proverb in her head, then chuckled under her breath. Whatever, she decided and pulled on another one. It was tighter than the last and was stretched taut around her chest, despite being the same size as those before it. Making lemonade was easier said than done.

Mia sighed as she set down the final top. They all fit, though that wouldn’t last for long. It was strange, but she could practically feel her body growing. She rolled her shoulders, groaning at how the shirt clung to her breasts. There was no doubt that it’d be useless in a day.

“Might as well get a poncho,” Mia sighed and put the other clothes on their hangers. She saw no reason to buy more than one, not when she’d only be back for more, “Hey guys!”

“Here!” Keira called and slung something over the door. Mia grabbed it and found that it was a spandex top.

“I told you…”

“If you’re worried about your nipples, just put on some tape or something,” Keira groaned, “Just put it on and see what you think.”

“Fine,” Mia sighed and removed her tightening shirt, then tugged on the new article of clothing. It was snug, conforming to her figure as if it were painted on her skin. She pulled on the front and found that there was still some give, though not much. The sleeves only just reached her elbows.

“Well?” Keira demanded smugly.

“It fits,” Mia stated.

“I meant ‘how does it feel’?”

“Alright,” Mia shrugged and pulled on the other shirt. The idea of being outside with only something that tight didn’t sit well with her, but at least it would work as a last line of defence, “Where next?” She inquired and stepped out. Keira stood beside the door, a bag in hand.

“Guess I’m a quicker shopper than you,” she teased.

“At some point I won’t even need to shop,” Mia groaned and restrained herself from grimacing at the thought of what would inevitably become of her. Stop it, she snapped internally. Being a pessimist wouldn’t help anything.

“Yeah,” Keira mumbled and looked away, “Where next?”

“The cashier,” Mia answered with a grin, “Then a café, I guess?”

“Sure. Where’d Annie go anyway?”

“Hmph!” Annie announced her presence as she leapt onto Mia’s back and wrapped her arms around the centaur’s stomach, hugging her tight, “Right here.”

Mia pinched the bridge of her nose and turned back to look at the girl. She was smiling brightly, like a child on Christmas morning.

“You a ninja or something?” Keira sarcastically inquired as they walked to the lone cashier.

“Nope, just small,” Annie answered and nuzzled against the centaur’s spine, unable to reach anything else.

“How tall are you now, Mia?” Keira queried once they exited the store, looking up and down at Mia with a curious eye.

“Dunno,” Mia answered, looking around at the passers-by. None of them made any effort to hide their astonishment, gawking at the half-equine, “Maybe nine-feet?”

“Fuck,” Keira laughed, “Come on, I don’t like the staring.” She led them to a café. Mia breathed in the air, smiling at the aromas all mixed together. Sweetness and coffee, fresh baked bread, even the other people made the air smell better. A smile graced her lips. It was soothing just to breathe it in. Annie and Keira sat at a table, while a waitress moved chairs and tables around for Mia to join them. The server thankfully tried not to stare, though it was in vain. Mia gave her a small grin, glad that she at least tried. The waitress returned the expression.

“Anything you need, just let me know,” she said and winked at the centaur.

“It’s nice in here,” Annie noted, looking around at the warm colours and charismatic atmosphere. The place radiated comfort.

“Yep, perfect for after long days of practice,” Keira proudly, then turned her eyes onto Mia, “See anything you like?” She wriggled her eyebrows, leaning in close. Her cheeks were faintly red as well. Mia picked up a menu and perused the items on offer.

“Um, the carrot cake sounds good,” Mia said.

“I wasn’t asking about the menu,” Keira winked.

“I want the chocolate cake and sundae,” Annie announced smiling giddily at the selection. She licked her lips, “And maybe something else too.” She added and fixed her eyes on the centaur, before scooting closer.

“How long have you guys been fucking?” Keira asked, bluntly.

“Um,” Mia flushed a deep red, hunching her shoulders. She glanced to Annie, who shrugged.

“Only about two days,” Annie answered, then waved down a waiter before Mia could say anything. As she placed her order, the girl’s deft foot slipped from its shoe and brushed against Mia’s body, brushing along where skin met fur. The centaur repressed a moan, biting her lip to do so. The connection between her two halves was strangely sensitive and sent gentle shocks of pleasure up and down her backs.

“Hmm,” Keira murmured and made her own order. Her eyes glanced at Mia and thinned knowingly, “Hey Mia?” She continued after their waiter left.

“Yeah?”

“Am I hot?” Keira asked. She stood and walked to stand behind the centaur, then leaned down to wrap her arms around her, “I mean, would you fuck me if you had the chance?”

“I, uh… Um…” Mia’s face seared hotly, like fire was licking at her skin. She looked to Annie for support, unsure of what to do. Were they in a relationship? Were they still just friends? The petite girl’s face was set into a portrait of discontent. Her toes traced along Mia’s belly, circling in small patterns.

Keira’s hands slid along Mia’s torso to find her breasts, “So soft,” the track star sighed, sinking further to push her face into the centaur’s neck, inhaling deeply, “so good…”

“Um, could you stop, please?” Their waiter requested as he set down their orders, looking away from Mia uncomfortably. Keira groaned and planted a soft kiss on the centaur’s neck, running her tongue along the nape, then returned to her seat. She smirked at Mia and licked her lips. The flushed centaur lowered her gaze and whispered a soft apology to the waiter.

“What’s gotten into you?” Annie demanded after shovelling a mouthful of cake and ice cream into her mouth. Her focus was on Keira, whose eyes remained adhered to Mia’s face and body.

“Can it, pipsqueak,” Keira snapped, “You already got at her, I deserve a turn.”

“She’s not yours to use,” Annie retorted, scowling at the athlete.

“She is right here,” Mia grumbled, idly poking at her carrot cake. They were nice enough to give her the entire dessert, though it held no interest to her. Her mind was detained with the mystery of why Keira was suddenly acting like another Annie. The two looked at her, lips parted and cheeks a blossoming rose colour. Keira sneered at the petite girl and moved closer to Mia, gesturing for her to lean down.

“I went commando today,” Keira whispered into her ear, “Wanna feel?” She giggled and stealthily moved Mia’s arm to her crotch, guiding the fingers along her shorts. When there was no response, Keira brought the oversized centaur’s fingers to the waistband of her pants, then slid them past, pulling her down until Mia’s lips parted in a gasp. The lithe runner grinned proudly.

It was muggy, like the most humid Summer day. Moisture surrounded her fingers like a cloud of wet heat, eliminating her own warmth and replacing it with the sultry blaze. The fabric was damp, almost soaked, and Keira’s lips were soft and plump. Even a virgin would know that the girl was practically in heat. If not by the sheer heat, then the way her breaths shuddered, and her nipples poked out against her shirt.

Mia’s own sex burned in want. Her sheath bulged against the floor, trying to eject her cock and take advantage of this lustful woman. The only thing that kept it at bay was Mia’s inhibitions and her confusion. Keira was disciplined, she knew that from watching her run, or when she played any sport for that matter. Yet, here she seemed to embody the idea of a mare in heat. Mia glanced at Annie, whose attention was occupied for the meantime by her decadent desserts. It was very similar to their first time.

“Ladies, I’m afraid I have to ask you to leave. We cannot tolerate such behaviour,” the waiter returned. His interruption could’ve been divine as he prevented Keira from pushing Mia’s fingers inside. The centaur rose swiftly, yanking her hand free.

“I-I-I’m so sorry,” Mia stuttered and trotted out. Her face made the sun seem like Pluto at that moment, as if it were ready to explode in her embarrassment. Worse, she was certain that her cock was partly erect. A convenient breeze confirmed her fears as the wind brushed along her sensitive glans. It ran along her balls as well, which churned and sloshed with her slow, deliberate gait. She’d hoped that, after yesterday, her libido would be at least slightly cowed.

She twisted her head around and glared at Keira. The athlete shrugged and offered an apologetic grin, while she laid a hand on the centaur’s rump. Annie came up around the front, pouting. Chocolate smeared her face like a poorly applied lipstick. Mia chuckled at the girl but kept her silence.

“Well, that sucks,” Keira fumed, “Wanna try another place?”

“You’re just gonna try something again,” Annie accused.

“That hurts,” Keira mocked, “I’m not that kind of girl.”

“Yeah, you are,” Mia muttered and raised her right hand, regarding the slickness that coated a couple of her fingers. She wiped it on her shirt, though the scent drifted up into her nostrils. It was relentless, wafting from her dampened shirt. Great, Mia thought with a grimace.

“Let’s go,” Annie urged, taking Mia’s hand, “I’m horny.” She added with a wide smirk and a shimmy of her hips.

“Aw, come on guys,” Keira whined and took Mia’s other hand, “I know this great place. They don’t even mind if you mess around.”

“You just want to get into Mia’s panties,” Annie protested.

“Um…” Mia murmured.

“I know,” Annie groaned, “My point still stands.”

“And what’re you trying to do?” Keira taunted. The small girl shied away and gripped Mia’s arm tighter.

“Let’s just go get something to eat,” Mia sighed, “I could use a greasy cheeseburger then.”

“The heart-clogging kind?” Annie inquired.

“Yep. McDonald’s, here we come,” Mia cheered and led the way, relieved that she had cut the tension, though she was more than certain that another type of tension remained. Annie kept close, pushing her hips against the centaur’s leg, while Keira pretended to accidentally brush her head against Mia’s breast as they walked. Why were they acting that way?

“Did you shower this morning?” Keira asked, sniffing the air.

“No… I forgot,” Mia admitted, brushing some of her fur, “Is it that obvious?”

“No,” Keira denied and inhaled once more, holding her breath, before releasing it reluctantly, “You just smell really, really good.”

“You said that before,” Mia noted, “What do I smell like, anyway?” She frowned, unable to tell what the athlete found so intoxicating about her scent.

“I dunno,” Keira shrugged and took another breath, “You smell normal, actually. Maybe a bit earthy? More like a horse or something.”

“Yeah,” Annie agreed, “But there’s something else.”

“What?” Keira asked, nostrils flaring as she tried to discern what it was.

“Her cock,” Annie giggled, slowing to walk beside the centaur’s haunches. She was almost level with her underbelly, needing only duck slightly to peer at the swaying sheath that housed her beloved blunt object. And, just behind it, was the rotund orbs that housed her favourite source of protein.

“Really?” Keira joined her, ignoring Mia’s disgruntled groans. The taller girl bent forward and ducked her head under Mia’s equine half, peering at the massive sheath. She moved closer, walking with Mia’s steps, then took a long breath as if she were about to dive underwater. The simile wasn’t inaccurate either. The horse-girl’s aroma seemed to part around her like waves, yet still so much of it flew into her nostrils and down her airways, where it pooled in her lungs. Keira felt that she could practically drown in the scent, just as her shorts were drowning in her desire.

“How was it?” Annie inquired, beaming victoriously.

“Whatever,” Keira grunted and tore herself away, swallowing the lump that built in her throat. She wouldn’t give any satisfaction to Annie. This was a contest after all; who could make Mia break first. Her lips tilted into an eager grin. The athlete fixed her gaze on Annie, holding the girl’s eyes, and flicked her tongue across her lips. It was an action that her teammates were familiar with, one that meant she wouldn’t be beaten.

It’s a relay, Keira thought as they walked. First, she would get to the second runner, that being Mia’s arousal, then she had to meet the next, which was bringing Mia to the brink, before dashing across the finish line. It’d be the true finish, she chuckled in her head, envisioning how utterly soaked her pussy was.

Keira shortened her steps to stroll behind the centaur. Part of her mourned the fact that Mia’s rump wasn’t human, leaving her unable to enjoy the view, though Annie more than filled that void. The lithe track star thinned her eyes at the petite girl’s certifiable booty, following the cheeks as they rose and fell. But there was one thing that no human, man or woman, could offer. Mia’s balls were big enough that they were plain to see even with her tails swishing from side to side.

“How much cum is in there?” Keira mumbled under her breath. She extended a hand and stroked one orb, realising that it easily outmatched her palm. It would overflow from her fingers if she held the whole thing. Keira bit her lip to keep a gasp of surprise from escaping as she felt the distinct sensation of fluid splashing against her hand.

“What’re you doing?” Mia frowned, peering back at the athlete.

“Hmm? Sorry, thought I saw some dirt. I got it though,” Keira assured her, hastening her step to outpace Annie, “So… what’s it like being a giant?”

“I dunno,” Mia contemplated the ceiling, watching it come nearer as they ascended on the escalator. Fear latched on at that moment, forcing her to look down and make certain. She exhaled slowly, seeing the machine moving her up, then glanced up. Would she grow this big someday? If it didn’t stop, then of course she would, but how long would it take. Mia nearly laughed at how ridiculous she’d look. Annie would need a trampoline to reach her cock, unless it also grew.

Then how would they have sex? Mia glanced back at the girl, whose eyes flitted skittishly around the area. They always found their way back to the centaur’s rump and the balls that churned behind a long, silky tail. She couldn’t help but grin at the girl’s attempts at self-control.

“Come on, it must be cool to look down at everyone,” Keira exhorted, staring up through her fluttering eyelashes.

“Not really,” Mia began, “I honestly try not to think any of this stuff.”

“Why?” Keira frowned.

“Because I don’t like the idea of ending up as big as a house,” Mia elaborated, hunching her shoulders.

“If you were, then you could trample everyone,” Keira grinned and stomped her foot at the zenith of the mechanical stairs, then raised her arms like a big monster. In doing so, her shirt rode up and exposed part of her trim waist and the well-defined abs upon it, alongside a glimpse at her shapely ass. Mia forced her eyes elsewhere as she stepped onto stable ground and sighed in relief. Ever since she became a centaur, moving ground unnerved her.

“Could I get half a dozen Big Macs, an extra large vanilla milkshake, and two orders of large fries?” Mia said, trotting up to the counter. She looked to her friends, “What about you guys?”

“I’ll just nab whatever you don’t eat,” Annie answered, “Fine, I’ll get the twenty nuggets and a diet coke.” She added when Mia shot her an incredulous look.

“You guys do any salads?” Keira asked.

“I could ask my manager,” the clerk offered.

“Never mind,” Keira sighed, “I’ll get my meal soon.” She winked at Mia and licked her lips hungrily. The clerk smiled nervously, glancing around as if she might get in trouble. Mia offered her an apologetic shrug and pulled out her wallet from between her breasts. Massive endowments have their perks, she thought, trying to ignore how good it felt to touch them. Even just a brief touch like that was enough to send a pleasant trail of warmth across her body.

“Your order will be ready in a few minutes. Thank you. Next please?”

Mia placed her wallet back where it belonged and began the wait for her meal. Her stomach grumbled voraciously, eager for its fat-rich protein lunch. The centaur yelped in surprise when a sudden weight settled on her back. She looked around and saw Annie, who leaned forward and rested her head against Mia’s back.

“Are you going to fuck Keira?” Annie bluntly inquired.

“What?” Mia gasped, twisting her upper-half fully to face the petite college-girl.

“I don’t want you to,” Annie breathed and glanced at Keira, who had her hands clasped together in an obvious sign of restraint.

“I…” Mia began, looking around for anything to distract her.

“Six Big Macs, two orders of fries, vanilla shake, nuggets and diet coke?!”

“Over here!” Mia called, grateful for the subject shift, “Let’s talk later, okay?”

“Fine,” Annie relented and dug her heels in, “Onward, noble stead!”

“Mind if I get a lift?” Keira quipped, then jumped onto the centaur’s back behind Annie, “Wow, this is… Hey Mia, start moving.” The giant half-equine shrugged and began to trot toward an open table in the cafeteria-like floor, before she froze at a distinctly sexual moan.

“You’re kidding, right?” Mia groaned, turning to look at her passengers, glaring at Keira.

“Don’t stop,” Keira breathed, digging her hips against Mia’s powerful back, “It feels amazing.”

“Yeah,” Annie agreed, following the athlete’s lead, “Let’s go for a run.”

“Or better yet…” Keira began and reached around the smaller girl, hand finding Mia’s chest dominating breast, “Let’s have some fun.”

“Stop,” Mia gasped, unconsciously arching her back to further push her full mound into Keira’s hand. A moan tore its way from her throat as Annie grabbed the other. She resumed walking and desperately tried to ignore their groping, but she quickly realised it was hopeless. Her nipples were growing hard and her sheath felt tighter by the second. The centaur’s breaths turned deep and slow.

“Hmm,” Keira moaned airily, grinding her crotch against Mia’s equine back, “Fuck, these are really fucking soft.”

“Uh huh,” Annie cooed and hastened her motions, “And they feel even better in your mouth.”

“Do you lactate, Mia?” Keira breathed, manoeuvring her fingers to pinch the hardening nub.

“N-no,” Mia hastened her gait and her breathing. The bags of food hung forgotten in her hands. Likewise, her stomach had all but lost its appetite. Lust had replaced it with a different type of hunger, one that spread through her like a violent infection. It seeped into her blood, her skin, rushing toward her cock. The moaning mere inches behind her only hastened its pace.

Her eyes strayed to the restrooms. There was no helping it. Mia bit her bottom lip and glanced at her passengers, both of which grinned at her in response. Moisture touched her skin through her fur, bringing the centaur’s eyes down to their groins. Both of their pants were visibly damp, even Annie’s denim jeans were dark from her overflowing desire. Keira’s were much worse, her shorts almost completely covered in the fluid.

Lucky them, Mia thought as she struggled to keep her lower body from relaxing. It didn’t matter, though. Her cockhead was already free, poking out into the air with its flared crown and bulbous peak. She could smell her friends’ juices, their musk overriding the assortment of foods all around her.

“I haven’t eaten anything in hours,” Keira whined, fingers expertly massaging the massive breast that easily matched her head in size, “Come on, Mia… give me some rich, creamy protein.”

“No fair,” Annie whinged and shoved Keira’s hand aside, filling her palms with Mia’s heavy tits, “I had to cut off my lunch because you, Keira.”

“I’m more than just a barrel of cum, you know?” Mia grunted.

“Yeah,” Annie sighed, “You’ve got huge tits and a giant cock too.”

“Something that I haven’t gotten to try out yet, by the way,” Keira pointed out and forced Annie’s hands out of the way.

“Are you guys really that desperate?” Mia mumbled, restraining herself from letting out a moan. Her nipples had fully engorged, jutting forth like a pair of towers. Miniature versions of her true monument. The centaur dropped the greasy food on a nearby table and trotted hastily to the restrooms. With any luck, no one else would be in there and she could get some relief from Annie, then go home and fuck again.

“Shit,” Mia muttered as her thought pushed another inch of her cock free. She glanced around and caught the cashier’s eyes, seeing that they were wide and staring. The centaur gulped and moved quicker, ignoring the lewd moans and the constant grinding on her back. Mia’s face flared hotly as she shoved the bathroom door open, then locked it shut. It was a one-person restroom to her relief.

“Safe,” Mia breathed. The two humans hopped down from her back. Their clothes rustled as they undressed, wasting no time, “This isn’t happening.”

“Yeah, Mia’s my girlfriend,” Annie blurted, wrapping her arms around Mia’s possessively.

“Since when?” Mia arched an eyebrow at her.

“Um,” Annie flushed and released her grip.

“How about another little competition?” Keira offered.

“Why do I feel like my opinion won’t matter?” Mia groaned, exasperated.

“So,” Keira snickered, “Whoever makes Mia cum more, gets to be her girlfriend.”

“Hello?” Mia waved at the girl, “Still a half-a-human over here.”

“Mia,” Annie murmured, “Whatever.” She sighed and stood in front of Mia, then turned around to present her rich derriere to the centaur, then slapped a hand onto a cheek and pulled it aside. Her eyes thinned, and her lips raised in a smirk.

“Don’t tell me…” Mia breathed as Keira’s hands slid under the centaur’s shirts to remove them. Her fingers played across her flesh, teasing her nerve endings as the clothing was removed. Anticipation danced in her mind and in her veins. Mia’s heartbeat pounded in her cock, pushing it out with every pulse.

“Yeah,” Keira’s breath washed across Mia’s skin, warm and soft, “It’s a threesome.” She jumped up and wrapped her legs around the centaur’s waist, putting their faces on level with each other. The tall athlete licked her lips once more, her eyes ablaze in hunger, as she leaned in close. Mia gasped as her mouth was caught in a deep kiss. She sank into it and hooked her hands under Keira’s pert ass.

“I’ll take my prize then,” Annie giggled from beneath the giantess.

Chapter 7 - Experiencing the Public Eye

It wasn’t real. It wasn’t real. It wasn’t real… It was real. Mia couldn’t take her eyes off her reflection, though the mirror didn’t show her face anymore, gaze firmly planted on the heaving poles of rigid flesh that drooped from her crotch. Twin penises in every way, right down to the pink splotch on the right-side of them. They hadn’t softened since she got home, as if annoying that she hadn’t stayed to use them on Annie and Keira.

How would that have turned out anyway, she wondered and bit back a deep moan. Her cock – cocks, she mentally corrected herself – jerked and slapped against her underbelly, forcing her lips apart to let her moan aloud. If she fucked using both of them, the sensations would be doubled.

“Oh god,” she groaned, picturing Annie and Keira being impaled on the dual shafts. Keira could be on top of Annie, the two making out while their bellies were distended by Mia’s sheer size. Their flesh would rub together as well.

A burst of delight shot through the centaur’s body as her cocks leapt and exploded with a deluge of pre-cum. It splattered against her wooden floor, each glob was half a centimetre thick and a murky, white colour. More dribbled profusely from her tips, streaking down the lengths or pooling between her hooves. Her eyes refused to stray from the sight.

She almost swore her body was growing before her eyes. Her ball sack never looked so big before, like it had spontaneously doubled in size since growing her second cock. Which made sense, she thought before turning her attention back to the hulking members. If everything had doubled, then what would her orgasm be like. Her breaths deepened at the possibility, recalling just how prolific she already was. What she wouldn’t give to just get a glimpse of her capability.

The only problem that stood in her way was a keen lack of reach. No matter how she tried to angle her two halves, she couldn’t reach her giant, three-foot shafts. All she could do was stare at them, whether through the mirror or as she laid down. The flared heads were both about as wide as a volley ball with blunt tips, which housed her urethral openings and released her never-ending pre-cum. Even with her constant growth, Mia doubted she could fit her hands around a single shaft, let along both.

They were almost the same length as Annie was. She giggled at the thought, imagining what that might look like if she kept growing. Annie could lay next to her erection, with her whole body wrapped around it and still have more to spare, or if she tried to take it up her cunt again. Mia shook her hindquarters in longing, swaying her dual members side to side and flinging more of her murky pre across her home.

She, fortunately, didn’t own much furniture. A couch for guests, an old grandfather clock that was there before she was moved in, and a large tv that had a sheet of plastic over the screen. After her recent growth and the incidents it incurred, she didn’t want to take chances. The last thing she wanted was to watch Hell’s Kitchen while Gordon Ramsay had cum-stache. Although that would be hilarious, she thought.

Random ropes of her pre-cum splattered across the mirror and the wallpaper around it. Her doctors had recommended that she be able to study herself at nearly all times, in case anything felt wrong and being a centaur made that tricky at best. Mia paused her fantasy and facepalmed. She’d completely forgotten to try calling again.

After she’d ducked back inside, her attention was engulfed by her reflection. She forced her eyes away, and her mind to focus on finding her phone rather than the pleasant sensation of slick pre-cum pouring from her dicks. The flow refused to stop or even slow despite her efforts, leaving an unmissable trail whether she went.

“There you are!” Mia announced and snatched her phone from the kitchen counter, then turned to trot back into the living room. She forgot to duck, however, and smacked her head on the doorframe. The entire farmhouse had been upgraded to handle her unique situation. Every room provided enough space for her to turn freely, while the ceilings stood high enough that, even now, she could only touch them with the tip of her fingers. Though that likely wouldn’t last long.

“Come on, come on,” Mia mumbled as the phone rang. This information couldn’t wait until Friday, or even tomorrow for that matter, “Pick up damn it.” She snapped in frustration. As expected, it beeped and asked for a message. Mia pinched the bridge of her nose and sighed, tossing her phone onto the couch. She glanced at the time; 12:43AM.

Had she really been staring at herself for that long? Mia groaned and rubbed at her eyes, finally feeling the time, though she doubted sleep would come easily with her shafts as they were, not to mention how soaked her bed would get. It wasn’t necessarily a bed, more just a large mattress for her to lay on. She had a thick blanket for Winter.

“Bathtub it is then,” Mia muttered, at least there she wouldn’t have to worry about flooding the place. She settled into the tub, though it was more of a lavish shower stall with nozzles at almost every angle poised to clean her properly. Her cocks rubbed against the ground, eliciting a soft groan of pleasure. Pre-cum almost immediately pooled under her, spreading out to encompass the area before being swallowed by the drain. She’d need a nice, long shower to wash it out.

The last thing she needed was to walk onto campus reeking of sex. Albeit the idea made her shafts throb all the harder, especially given how Keira and Annie reacted just to her natural odour earlier. Who knew what would happen to everyone else? Mia ground her dual-mounted groin against the increasingly slick floor, moaning gently as her fantasies took hold.

She had Annie riding one cock, while Keira and Rhona pleasured the second. They took turns deepthroating it, stretching their bodies beyond human possibility time and again. Other people would take notice, coming over to see the spectacle. Then, one by one, they’d join in in anyway that they could. Kissing Mia, sucking on her tits, masturbating in front of her, or bathing her balls in their spit. And for the grand finale, she’d systematically fuck two of them at a time, inflating their bodies with cum.

“Fuck!” Mia cried and grabbed at her breasts. So caught in her imagination, she hadn’t noticed her grinding hips moving faster or the rising pleasure. Her cocks exploded with cum, overwhelming the drain to flow across her bathroom tiles and into the living room. She didn’t care about that, though. Every facet of her being was turned toward the mind altering tremors racing across her body. Her hips continued to buck with each shock of delight that sparked from her balls, through her shafts, up her spines and straight to her brain.

The flood persisted on and on. She pulled on her nipples, the comparatively tame sensation enough to trigger another explosion that set her balls rumbling. Each burst across her underbelly made her all the more aware of her body, as if the spurts were making her grow even bigger. Her balls practically felt like there were more than just two as she ground against her floor. Cum filled the stall, pouring over the inch high barrier faster with every second.

Mia turned onto her side and let her cocks unleash their torrents into the air. Without her body in the way, her jets of seed rocketed against the shower wall, splashing back onto her face and body. It already looked thicker than her earlier release. She continued to grope her breasts and tug on her nipples, moaning the entire time.

The white of her bathroom floor quickly vanished under the off-colour goo. Her door slowed it from leaking out into her home, though she could do nothing to keep it from oozing under the barrier. By the time she finished, her entire house would likely reek of cum. Not that Annie would likely complain.

Gallon after gallon was expunged from her cocks before they finally calmed. Hardly an inch of her body was spared, globs of jizz clung onto her brown fur and matted her neon-pink hair and tail. It’d take forever to get it out after it dried, she thought. Mia weakly raised a hand to turn on her shower, then shrugged and curled up as best her centaur body could. After dealing with Keira, Annie and this latest development, she couldn’t find the will to do more than sleep. She could handle everything after she woke up.

She blinked and groaned against the harsh rays of sunlight that peeked through her bathroom window. The angle was just right for them to cover her face, forcing her to sit up if she wanted to avoid the luminescence. Mia’s lips curled as something thick and sloppy fell from her side. She glanced down through bleary eyes to see last night’s product in full.

“Oh, right,” Mia sighed, then shuddered softly when she touched her fur, finding that most of it was crusted in dried cum. Even her conspicuously pink tail was covered in the stuff. Before she did anything else, she needed a full force shower. Mia flicked the switch against the wall and turned the dial beside it to maximum, then stood in preparation. She, then, stood up to let the many nozzles do their work.

After sleeping in such an uncomfortable position and on such a hard surface, she seriously needed a stretch. Mia groaned in satisfaction as her joints popped, sighing as she relaxed her back, then stretched her arms high. Or she would have.

Her ceilings were all ten feet tall as a standard. No more, no less. The physicians responsible for predicting her growth over the years decided it would suffice, certain that she would reach eight feet at best. Mia tilted her head back. Her hands were pressed flat against the roof, yet her elbows were forced to remain just above her waist. She was barely half a foot below the pearl-white ceiling.

Yesterday she swore she had near two feet of space. Mia lowered her hands as the shower activated, rinsing her jizz encrusted body of every fleck that adhered to her hair and fur. The water was just the right temperature, spraying against her sensitive areas with a delightful pressure. She turned her head and saw that her hindlegs were only a few inches away from touching the other wall, while her nipples had only a fraction of that distance.

“You’ve gotta be kidding me,” Mia groaned, then gasped as a nozzle turned slightly, as it was programmed to, and sprayed against her balls. They jostled about in her spacious scrotum, though it felt like there was more than two. She gulped and used a back leg to feel her sack. Her eyes bulged open as it swung to and fro, the contents gently colliding together. There was more than two, without a doubt, “What the fuck is going on?”

Her fright gave way to a soft moan as the nozzle sprayed against her sheaths. A ripple of pleasure zipped across her body, forcing her sheaths to grow tight around their occupants. She bit down on her bottom lip as the dual shafts slid out an inch into the constant jet of moisture, forcing her lips apart with a breathless sigh. Every drop of moisture was akin to a caress on her sensitive heads.

Mia leaned her head against the wall, breaths coming deep and slow. Her nipples hardened, striking out further and further while her cocks did the same. They ran out of room before long and mashed against the shower, adding another element to her burgeoning pleasure. She unconsciously rubbed her chest against the plain wall, incapable of resisting her urges.

There wasn’t a speck of cum left on her body. Its job done, the shower nozzles returned to their default positions and turned off, leaving her to stand amidst the steam. Her body glistened in the building sunlight, droplets of water tracing across her lightly muscled physique. As the sun rose higher, so too did her cocks. They gradually slid into freedom with the pure intention of finding another release.

“What time is it?” Mia whispered. On cue, she heard the song for her warning alarm from her room. She only had ten minutes to leave if she wanted to arrive on time, “Ah crap…” None of her shirts would have a chance of fitting. Her breasts looked bigger than her head now, not to mention how long her torso had become, or her nipples for that matter. Even after her arousal was cowed by worry, they still poked out over an inch.

Each of her cocks had fully retracted at least. Part of her was curious to see how big they’d become overnight, but her rationality swiftly silenced the wish. She could check after classes. With Annie. And possibly Keira. Then she could also find out how much cum she was producing in her newly doubled testes.

She threw top after top over her shoulder. The only ones that might’ve worked were sweater, and the weather was far from suitable. Sunlight bathed her entire bedroom, from the queen-sized mattress to her dresser to the… she almost did a double take when she realised how sparse her bedroom was. That’d have to change.

But later. Mia snapped her attention back to the task at hand, then turned her attention to a bag slumped against her door. She’d chucked it in her room after coming in last night. Yesterday seemed like a dream to her, yet she knew it was real. The proof hung from her crotch after all. The centaur ducked down to sift through its contents, quickly happening upon the skin-tight, elastic top Keira had pointed out.

She doubted it would cover her entire torso, but it’d at least make it over her tits. Hopefully. Mia yanked it over her head and breasts, forcing it to stretch until it groaned from the strain, then snapped it into place. Despite the material, it only just reached her stomach and hugged her breasts so tightly that she might as well have been naked. At least this way no one could arrest her for indecent exposure.

The law was on her side as far as that was concerned. So long as her human half was covered, then she could even get an erection in public without legal issue, though whether or not people would appreciate such a sight was another question. One that she wanted to test. No she didn’t, Mia mentally protested and trotted into her kitchen to find her quick, simple and filling breakfast.

“I hate my appetite,” Mia grumbled when she stepped outside. It took almost five bowls of cereal before she felt like she’d survive until lunch. She slung her bag over her shoulder and took a glance at her phone; two minutes left. One tardy slip on her record wouldn’t be the end of the world, but she would prefer not to have it all the same. The centaur took a deep breath and launched herself toward the campus.

There was comfort in how her hooves pounded into the familiar terrain. Each fall could’ve been from a sledgehammer dropped from several metres high, leaving a deep imprint that completely obscured those that came before. Trees and brushes blurred into obscure green and brown shapes, through which flecks of light bled through. Neither compared, however, to the sensation of wind ripping through her fur and drying hair.

The ripples that weaved through her equine-half were almost akin to a gentle brush. She had come to appreciate such a feeling over the years, especially from a delicate hand, often going so far as to request her friends’ aid. But no one could match the sublime fusion that sprinting provided.

All her senses were fixed ahead of her. She ducked and dodged low-hanging branches with ease, or rammed through them without care, hardly slowing her brutal gallop. Freedom came to mind, and little else. The fact that her shirt revealed her midriff and barely made her boobs decent didn’t matter at all, nor did the feeling of her four balls knocking about in her sack, or even how her shafts lightly pulsated within her sheaths. Rather, those sensations merely added to it.

Societal demands were unimportant now. Just memories of oppression, of keeping her gloriously sexual body under wraps, all to fit in. Mia almost wanted to abandon her life as it was and run into a dense wood, hidden away from humanity. Perhaps she might even take Annie with her? That’d be perfect. Freedom combined with sex whenever she wanted it. And there wouldn’t be a problem with how big her body became.

The wicked sounds of society razed such thoughts in an instant. Mia’s face burned as she slowed to a casual trot, hooves clicking against concrete once more. All around her, people slowed or outright stopped to gawk at her with their heads tilted far back, mouths agape like she hadn’t existed for almost ten years. She knew that wasn’t what consumed their focus.

For some, it was the huge sheaths that rested close to eye-level with the humans. Others, they were preoccupied with her certifiably enormous bust, its every detail hardly obscured by the form-hugging shirt – the garment might as well have been painted on for how effective it was. Some even lingered on her subtly muscular abdomen.

She walked through them with her head turned low. Whispers began to creep in amidst the stares, always pertaining to her shape in some way.

“Look at her breasts!”

“Jesus, is that another sheath?”

“She’s got four balls!”

“How big is her cock?”

“I want to ride her.”

“Slut… me too.”

“Me three.”

Mia hastened her gait at the last two murmurs. An intimately familiar wave pulsed through her veins, rushing from her human half into her lower form and straight to her behind. She did her best to ignore the feeling of her sheaths distending with her swelling shafts, though her admirers had no such qualms. They pointed and told their friends, bringing as much attention to them as they could. The centaur bit her bottom lip and rushed onto campus.

Sadly, a student body comprised mostly of young adults didn’t improve the situation. She slowed to a stunned trot, hooves clacking noisily against the path, while everyone else seemed frozen into silence. Her mind shot back to the scene from The Birds as she glanced around. They all seemed so small now, she thought. It was to be expected. She had to be more than three feet taller than the average man.

“Hey, Mia!” Annie waved from the main building, smiling as if nothing had changed. She was stood at the top of the stairs, easily six feet above the ground yet, as Mia approached, she was only slightly over the centaur.

“Hi, Annie,” Mia smiled warily as she climbed the ramp beside the stairs, coming to a stop as she towered above Annie. The girl had never looked so tiny.

“So, been developing some stuff, huh?” Annie grinned and winked, then stepped under Mia’s belly, “Fucking hell, babe! These are huge.”

“Please don’t,” Mia flushed and nervously shifted her weight from leg to leg, unknowingly swinging her sheaths before Annie’s face.

“Okay,” Annie’s voice left no doubt as to whether she was pouting. She took a long, loud inhale before stepping away, “Damn, you smell even better today. Hey, after class can we…?” She let the offer hang in the air, though her eyebrows wriggled suggestively while her legs spread apart slightly.

“I… yes, probably,” Mia sighed.

“Yay!” Annie pumped her fists in victory, then turned and pushed out her rear, giving it a little a shake, “I can’t wait to try two cocks at once.”

“Let’s just get to class,” Mia rolled her eyes, though the desire that throbbed within her dual cocks was undeniable. The college hallways seemed built with giant centaurs in mind, for the path was wide and the ceiling stood at least three feet over her head, offering more than enough space for her to stroll through. She wouldn’t outgrow such a generous space if she was lucky.

Though the hordes of students offered a challenge. Some things change from high school to college; cliques, education and social standing came to mind first, but there were plenty of aspects that remained as terrible. One being the sheer number of people around. Throngs of her fellow students stopped in place to stare, consuming the spacious hall and forcing Mia to force her way through.

Mia yelped as someone’s hand shot out from amongst the onlookers to rub at her sheaths. Their purpose was to protect her cocks, yet, almost in spite of that duty, she felt the touch as clear as day. She tried to glare at the person, but they faded into the crowd. The centaur released a sigh and continued to her class, all too aware of the many eyes locked onto her overfilled sack.

Like the college as a whole, the classrooms were designed to house entire legions of students at a time. Each was equipped with at least a hundred-and-fifty seats and desks, though Mia’s lessons also featured a custom made desk for her use. The ceilings were lowered to make the most use of the other floors, giving Mia only a single foot of room. She didn’t stop as she clicked along the hard floor to her desk. If she did, all she’d see were shocked and curious eyes.

She trotted to her place at the top corner. Her desk was attached to an arm that extended from the wall, with adjustable height and a small button on the bottom that would alert her teacher of any potential issues in progress. There’d never been a reason to use it yet, though she feared that, with how her libido and growth were developing, there soon might be. Even her elastic shirt felt like it was constantly being tested further and further.

Mia gulped back a whimper as she recalled how revealing her apparel was. The collar clung tight to the base of her neck, unyielding unless she actively pulled on it, while the black fabric and slim rubber stretched across her chest. Every inch of her breasts were defined against it. From the way her bosom swelled from her upper torso, filling out into full, perky teardrops, to how they encroached on her biceps.

Yet the material didn’t even reach her bellybutton. Mia worriedly pawed at her naked stomach as she folded her legs to sit, feeling the powerful, yet softly defined muscle beneath her skin. She’d always been physically fit as a human, sporting a very similar abdomen, but her fitness had dwindled somewhat after the incident. Now it looked as though she hadn’t gone a day with some exercise.

She had no complaints if her extreme growth spurt improved her physique. Since her first time running with her new form, she’d become almost wholly focused on that, foregoing any training for her arms. Her human-half had progressively softened over the years of neglect, though no one could tell. Even she had her doubts as she inspected her subtle muscle tone.

A very different sensation at her rear caught her attention. Mia shifted her hindquarters to try and remove it, then stopped as she realised her sheaths were being mashed into the coarse carpet. She bit down a whimper as discomfort and pleasure began to swirl together, slowly swelling within her over equipped sex. The centaur turned onto her side, baring her twin sheaths to the class. A symphony of gasps burned through her ears as she adjusted her desk.

The lecturer, Miss Harper walked in shortly after through a door at the front. She didn’t look at her class yet, taking her time to organise her items and take a final look at the lesson plan, “Well,” she began, lifting her lightly wizened face to the room, “Shall we… b-begin?”

No amount of public speaking or experience as a teacher could prepare someone to see Mia as she was then. In tandem with her students, she silently stared.

Mia, similarly, found herself enticed by the older woman. There was no arguing Miss Harper’s appearance, even with the wrinkles she’d earned through her life. Full, yet short brown hair framed her visage, while her blouse strained against her healthy bust. Her skirt was left little leeway around her matronly hips and ass. Miss Harper’s figure had lost a great deal of tone at her age, covering her in a soft layer. One that was undoubtedly more pronounced at her breasts.

“Miss Davies, please stay behind after the lecture. I’d like a word,” Miss Harper cleared her throat, and turned to her whiteboard with a remote in hand. Mia only nodded, ears instantly at attention for the lecturers rich, British accent that was just shy of snobbish. It managed to hold a class and sensuality few American’s could possess, one that many students openly tried to imitate. Mia included.

The centaur managed to look away as the lecture began. She surveyed the rest of the room, hoping that her classmates might focus on their studies, rather than her sudden explosion in height. That hope was sorely misplaced. Everyone only had eyes for her, no matter how their hands were poised for note-taking. Some managed to glance between the board and Mia, and even take occasional notes as they did so. Their gaze always lingered on her, however.

Mia trained her eyes on the whiteboard. Perhaps if she ignored them, they’d do the same after realising that she didn’t think it was that big a deal. But it was, her mind argued. Her sheaths were on full display, and her quartet of balls sat heavily on the floor. Each orb had to be the size of a small soccer ball, yet her black, lightly-furred scrotum remained loose around them. Her body screamed excess.

Even down to the amount of fluid she produced. Mia’s face scorched at the memory, while her heart throbbed harder, echoing within her nipples and lower-half. Her classmates began to whisper amongst themselves, eyes still completely fixated on her. Beneath the murmurs, she caught a faint groan rom her shirt and glanced to it. The centaur bit her bottom lip to keep herself quiet.

Being so close to her heart, her nipples had a direct flow of her desire. They plumped out further and further with every jolt to her lust, shoving against her rigid shirt to be freed. Mia hastily reaffirmed her focus on Miss Harper and her notes, copying as much of the lecture as she could, whether it was useful or not. Her classmates continued to mutter to one another, however, clearly staring at her breasts.

She hunched over, trying to conceal them from view. All that did was mash them into her arms, highlighting their sheer size and sending a sharp rush through her system. Mia inhaled at the sensation and quickly relaxed. Her breasts fell into their natural place within her shirt, despite it barely qualifying as such. The murmurs dampened at a sharp ripping sound.

Miss Harper turned to inspect it. All eyes were on Mia without distraction, each pair zeroing in on her chest and the abundance of flesh that was unwillingly displayed. Her shirt had torn under the weight of her breasts, opening a great rend in the supposedly resilient elastic. The tear only went across the front, stopping at her underarms, and extended down the tops of her tits. It came to a fortunate, almost planned end just before her dusky pink areolae came into view.

“Woo!” Someone cheered to a chorus of applause.

“Tyler!” Miss Harper snapped, her voice carrying over his praise to silence it in an instant, “Do… do you need to go change, Mia?”

“Um,” the centaur bit her lip, staring down at the large hole in her shirt. It revealed everything from her collarbone to the ends of her breasts, leaving her engorged nipples vaguely covered. She could see several pairs of eyes all affixed to her naked flesh in her periphery, shamelessly basking in the view. Despite herself, her cocks both throbbed powerfully and pushed against her sheaths, “I… I’m fine. J-just ignore me.”

“If you’re sure,” Miss Harper frowned in worry, though her gaze was just as enamoured by the view as everyone else’s, and turned back to her lecture. Mia glanced to her side and saw a group of girls eyeing her deviously, all wearing the same smirks she saw in movies, the ones that promised mischief. She recognised one of them as Bella, the local ‘bimbo’ of the college. And a notorious slut.

She’d tried and failed to sleep with Mia during the centaur’s sophomore year. The denial hadn’t sat well with her, leading the bimbo on a tirade – that had yet to end – against the half-equine and her friends. Few people bought into her propaganda, the four that did formed a circle around Bella. They were known as either the life of a party, or the killer, since Bella seemed unaware of the concept of sharing or boundaries and her followers modelled themselves after her.

None of them stared at her chest like the others. They were, however, utterly fascinated by a sight near her hindlegs. Mia took less than a second to understand what they were fixated on. She glimpsed Bella licking her plump, bright red lips. The blonde bimbo didn’t notice, or didn’t care that Mia was looking at her as she moved a hand across her body. Mia followed it, her own gaze tracing Bella’s incredibly curvaceous figure.

It was common knowledge that Bella had implants. The rumours that started had been short lived, as she confirmed them for all to hear when someone asked her. She had no shame from what Mia could determine. The bimbo’s wardrobe had nothing but outfits that complimented her notorious title, from slutty schoolgirl ensembles to something that a stripper would wear. She barely stayed within the realms of public decency.

On that day, she wore a simple vest and skirt. For others, that would be revealing enough to entice the desired eye. For Bella, she left very little of her bronze tan to the imagination. Her neckline ended near the peak of her breasts, presenting several inches of her implanted cleavage, while the hem hung just past her nipples, not even covering the bottom halves. Bella’s legs were hidden under the desk, but Mia could see the skirt she wore.

It looked as if it’d barely reach over her ass. The smallest step and her pussy would be flashed to everyone around her. She had to be wearing panties, otherwise the bimbo would have been escorted from campus long ago, though Mia doubted they were anything less than a thong. The centaur jerked her vision back to Miss Harper as Bella’s hand slid under that tiny skirt.

The worst part of it was that Mia was all too aware of the pressure building in her sheaths.

Chapter 9 - Experiencing Some Lustful Thoughts

The centaur shifted from hoof to hoof. They clicked against the hard tiles and rebounded against the walls, echoing in Mia’s ears as she savoured having her cock half-buried inside Bella’s tight throat. A passage so thin it shouldn’t be able to handle her girth, much less hunger for more, but the slut inched deeper. Saliva and pre-cum mixed together within Bella’s throat and mouth. The lewd cocktail coated and dripped from Mia’s shaft.

Beside the first, her other dick, from which similar sensations nipped at her senses, was given long, loving strokes. Mia’s nipples jutted an inch from her broad areolae, brought to life by the burgeoning ecstasy of her twin stimulus. She pushed forward. Bella’s lips forced the foreskin to bundle, and the member to bend against her face. The self-proclaimed slut paused and inhaled, somehow breathing around the immense blockage.

“I didn’t tell you to sniff my dick,” Mia grunted and pulled away, then lurched forth. Her prick slid inside with ease this time, Bella’s gullet open and willing, “Just take it… like the slut you are.”

Subtle tremors through her dual body bristled Mia’s fur. Since when did she talk to people like that? Even to her friends, she was cordial and professional. She didn’t insult them. Didn’t order them around. Didn’t discourage them.

But Bella wasn’t a friend. She was the campus whore. Anyone with a penis or a large enough strap-on had slept with her, whether sober or drunk. Entire fraternities had taken her in a single night. So the rumours claimed. What reason did Mia have for being nice to her? None. If anything, she had the right – the duty – to treat her as dirt. It’s what she wants, Mia justified.

The centaur blanketed her qualms in her pleasure. She brought her hands to her breasts, cupping and savouring the plentiful flesh. Their shape belied how soft they were. A set of giant marshmallows, she thought, capped with ripe, delicious cherries. She massaged her tits, cooing softly at the mild warmth her touch brought. It couldn’t match the wanton blaze Bella’s slurps caused, nor the feverish sensation as she stroked the other cock.

Mia tapped her hooves in nervous delight. Mild quivers rocked her overstuffed scrotum, swinging it to and fro, its cargo carried it far. She jerked as Bella shoved forward. Her lips pressed into the sheath, she inhaled the potent musk and made a gargled moan. The centaur reared back with her hind legs, pulling a few inches free, before slamming back inside. Her prepuce slid into Bella’s maw as her balls swung forward to smack the slut’s chin.

“Oh fuck, that’s… that’s good,” Mia whispered. She glanced back to mirror as Bella kept moving. There, standing naked underneath her belly, surrounded in a sensual stench alien to a human’s body, her third partner shoved her nose deep against Mia’s crotch. How did it smell to her? Mia had gone to a farm as a child. The horses were clean but in their natural environment. It had reeked in an oddly pleasant way, such that she couldn’t place how she felt about it. Bella had no such issues.

She loved it. No one could mistake the wide-eyes, flared nostrils and bobbing motions for anything but lust. Her senses were subsumed in centaur cock. Bella’s body vibrated around Mia’s shaft as her hands stroked the second shaft, urging heaping gouts of cum to spurt forth. They landed against the slut’s naked chest, covering it in moments. She aimed the following shots to coat herself further.

“Do more,” Mia groaned. Bella stepped back, a foot of cock slid free alongside a gush of throat and dick slime, and slammed forward again. Her hands darted to her chest and back to the other prick, massaging a layer of spit and pre-cum into its dark length. It glistened with the mixture and expunged greater amounts in return.

Mia rocked her hindlegs in tandem. She snorted and moaned under her breath, basking in the simple act, made implausibly erotic by her unique form. The centaur tried to imagine the view from a human’s perspective, from Bella’s to be precise, to picture what it must feel like to stand beneath a horses body, atop of which an overendowed human torso resided, and suck a cock bigger than a leg. All while she stroked its twin and inhaled the brutal musk.

But that wasn’t her world. She was the centaur. One that stood twice the height of Bella, endowed with two cocks, four balls and a set of breasts too great for oversized watermelons to compare. Bella’s head bobbed back and forth, moaning and gagging on a cock larger than her head. By all accounts, the bitch should’ve been terrified of the challenge alone, much less succeed in conquering it. Her stomach bulged out as it filled with a constant tide of pre.

Yes, Mia thought as she hastened her thrusts. She was someone to be adored. Not by everyone, only those with the gall to take her like this, to impale their oesophagus and spread their stomach for her. And more.

Mia moaned higher and tugged on her nipples. The blissful soreness in her balls worsened. They grumbled and clenched, shooting greater loads of slime into and onto the slut, who worshipped the sensations. Her once trim stomach was no more, now a slow-swelling mound of viscous cock juice. Though it didn’t yet compare to what had become of Keira and Annie the day before.

“Oh god, what the hell am I turning into?” Mia murmured. She wanted to fuck this girl, someone whose familiarity bordered on a stranger. Was it safe? Would she tell others about it? What if they wanted to try as well?

The centaur pinched her nipples and yanked on them. She couldn’t think like that. Not now, not ever. Annie and Keira – and now Bella – were already willing. Why would she want more? A rhetorical question. The answer pervaded her entire body, from hoof to tail to her head; pleasure. If a threesome had been incredible, then how about a foursome? Or if she took five girls at once?

“Stop that,” Mia snapped under her breath. She grunted and plunged hard into Bella, cramming the girl’s face into her crotch and forced her to hold the pose. Her neck craned up, its shape overridden by that of Mia’s cock, while a throbbing tube led the way down into her pudgy abdomen. The centaur pushed forward, pulling the slut along until they were against a wall. Mia planted her hands there and kicked with her hindquarters. Her rear rose high, extracting almost two feet of dick, and slammed down. Bella retched at the violent penetration.

But her pussy rained harder than ever.

Mia panted, her breath condensing against the tiled wall. Its surface reflected her visage with a bleared out sheen, offering a peek at her flushed features and wild-eyed desire. Her pink hair scattered across her face, clinging to her cheeks with the budding beads of sweat, while her lips hung apart. She looked untamed, like an animal in heat.

“It’s your fault,” Mia said, glancing back to the mirror and at Bella, whose face was smeared in sweat, tears, cum and spit. That’s right, the fault lied with Bella for riling her up, and with everyone else in the classroom. None did anything to help alleviate her growing unrest. She couldn’t help but feel this way because of them. Which left the responsibility of relieving her to Bella. Who better than the campus slut?

But this would be a one time indulgence. She’d see her doctor tomorrow and get a grasp of the situation, then she could work on controlling it, if nothing else. For now, however, she would gladly abuse Bella’s body until the slut gave out or she was satisfied. Just this once.

Mia repeated her earlier plunge. Her balls swung forward, carried by her thrust and their immense, growing weight, to slap Bella in the chest. The slut moaned and swallowed around Mia’s dick, overtaxed throat working around its enormity, urging it to swell her belly further. Over four feet of cock, riddled in veins larger than novelty pencils and capped in a head wider than a melon, rammed down Bella’s gullet and into her stomach. The organ sloshed with Mia’s abundant pre.

“That’s right,” Mia breathed. She ground her tits against the wall, her hands preoccupied with maintaining her balance as she kicked back and slammed into Bella. The smack of her balls against flesh made her cocks throb fiercer, “Take it you fucking slut. Suck all that horse cock. Stroke another. Make me cum down your teeny-tiny mouth.”

Bella’s moans heightened at the degradation. She angled the second cock toward her chest and wrapped her faux boobs around it. A sublime coating of their fluids lubricated the prison as it stroked up and down. She kept one arm around her bosom to it in place, while the other caught Mia’s balls and massaged them in turn. Mia moaned in approval and hastened her bucks. Each time she slid down, her cocks felt one another through Bella’s tender skin.

“I’m gonna cum soon,” Mia said, “Then I’m gonna fuck you properly. I’m gonna inflate you with my cum. I’m gonna cover you in it. You’re gonna look pregnant with my babies. My foals.” Bella’s suction strengthen as she leaned into the next thrust. Her arm bobbed her tits as the spare hand encouraged a greater load. Each oval ball swelled with the impending release, expanding by the second. Larger than a soccer ball, then a basketball, then to a prized pumpkin.

How many trillions of sperm was she producing? Her balls were tight, her black flesh shiny from the strain of its four burdens, all churning and grumbling for release. Bella’s lips travelled across near every inch of Mia’s cock, sucking as it withdrew and gagging upon entry. Drool hung off her chin and broke against her tits, aiding the second behemoth in fucking the obtuse mounds. Regardless of authenticity, Mia savoured the dual attentions.

“Fuck,” Mia bit her lip and hung her head, focusing on maintaining her control, “Not yet, not yet.” Beneath her, a murky puddle spread. The product of her and Bella’s copious fluids, too much for any one person to create. Too much for an orgy to create. Only she, with her mind addling musk and cocks, could bring about something as spectacular as this.

She paused with her prick buried within Bella. The slut retched and squirmed, but she didn’t move away, despite her nose being thoroughly trapped against Mia’s crotch. Fine hairs tickled her nostrils and painted it in the centaur’s scent. Her throat retaliated and tried to push the giant out, to no avail. Its flared tip remained lodged in her rounded stomach, the veins throbbed against her heart, overpowering its beat with Mia’s own, while its shape dominated Bella’s chest and throat. Bella took a long, ragged breath as Mia reared back.

“Cumming!” Mia announced. Her flare, already enormous, exploded upon its entry into Bella’s stuffed belly. Its shape became defined against her gut. The rest followed suit. Mia’s balls seized and retracted against her body. All four fed one another with an endless sense of bliss. They pulsated and sloshed against each other.

“Oh, fuck!” Mia’s hands flung to her tits and held them against her face, stifling her ecstatic shriek. The onset of cum slowed in her mind, as though her sperm rich gunk were too thick to be expunged properly. It welled up in her balls and shoved into the tubes. They separated between the two members, though the majority travelled through the first. Had the second not finished forming yet? She wondered in her blissful state.

She couldn’t estimate how much jizz traversed her shaft. Litres? Gallons? Bathtubs? The thought seemed ludicrous, yet her very existence defined such a term. Her cocks burgeoned as the load moved, shrinking when it passed from inch to inch. Mia’s shriek sputtered as she tried to moan. Her seed was hotter than she’d ever felt before. It set light to her nerves, which fed on the agonising bliss.

An orgy of sensations assaulted her hyper sensitive form. The moist, tight seal of Bella’s throat, the bitch’s rigged tits, the magma rising through each of Mia’s cocks, her balls pumping said magma, the trills of ecstasy dancing across her skin, her moans and screams vibrating her huge chest, to the simple act of her fingers sinking into her boobs. Trapped in slow motion, within that hive of bliss, she would swear a second orgasm was building already.

Then everything went into fast forward. Not the type where it skips entire seconds, but where time simply steps up a pace. Her cum rose to the flares of her pricks and bulged out the peaks, before exploding into and onto Bella. Mia’s mind dimmed as the sensations shifted into overdrive. Everything she had processed in a careful pace, now bombarded her. Fittingly, it felt like a series of bombs detonating across her form.

The blaze within her cock transferred to Bella’s gut. Her dick swam in its progeny, wreathed in lurid fire, as it produced more, adding to the… trillions? Quadrillions? Mia feared to think of how severe her production was. Part of her rejoiced in the impossibility of impregnating a human. Another scowled at the prospect.

Neither took centre stage. Such a right was reserved for her orgasm. It set her consciousness alight, then dampened it in the ashes of her free thought, leaving only one directive; to cum. Faint wisps of her former self caught the sound of cum splashing against the hard floors, and of Bella’s gargled cries. The slut quivered in what seemed to be her own orgasm, even as she went through the months of pregnancy in mere seconds.

Her belly hung lower and extended further with its liquid child. Entire feet were added to her frame before ten seconds had passed. Anyone, even Mia, could mistake her for carrying a litter of young based on her size. And every square inch was covered in layer upon layer of gooey, viscous semen. Yet the centaur’s orgasm persisted.

Regardless of how elastic her body seemed, Bella had a breaking point. The pressure built with every deposit of cum, until the slut’s belly couldn’t take another drop, despite how it craved more. Viscous streams seeped out from between Bella’s lips and dribbled onto the other cock. Her throat worked to swallow it back down to no avail. Another gush from Mia forced a tidal wave of jizz to escape. The puddle below them expanded, eager to encompass the entire floor.

“Fuck,” Mia hissed once her climax stammered to a stop. Her cocks softened and hung halfway down her legs, weak pulsations forcing the stragglers out. She stepped back, breathless with exhilaration and ill-restrained lust.

“Uh huh,” Bella gasped from the wall. Her legs refused to support her after the intense row of sensations.

“Oh fuck,” Mia reiterated once she saw what had become of her partner.

“Yeah, might’ve put on some weight. Still hot though,” Bella shrugged, sending ripples through her obscene gut. Her legs were splayed out on either of side of it, the precipice reached her knees and her belly button had popped out. Layers upon layers of cum oozed down its immensity, as it did her entire front. She ran her fingers through the thick goop, unconcerned with cleaning herself yet.

Mia gulped and her cocks lurched back to life. Reason and desire fought once again, the latter certain that cumming inside Bella again would kill the girl. And, by extension, ruin any chance Mia had at a normal life. Although, she thought and took a look at herself, being a ten-foot centaur had long since wrecked such a possibility. She shook the thoughts loose. They rattled against the confines of her mind, before she confined to the darkest corners.

“I should, uh, go.”

“No, no, don’t. Please?” Bella attempted to lean forward and grab Mia’s leg, but her stomach prevented her.

“If I cum in you again, you’re gonna pop,” Mia said and repressed a shudder. Why did the idea of seeing how far she could push this girl’s body, which had clearly met and surpassed its limits, turn her on? Or was it just the idea of cumming again? She hoped so.

“Hmm, don’t think so,” Bella hummed and rubbed her belly, cooing at it under her breath, “Is it weird that I wanna be a mom? Like, really soon?”

“I… guess not.”

“Most people bet you can’t get people pregnant,” Bella continued, pushing herself to her wobbly feet. She waddled to Mia and pressed her massive gut against the centaur’s front, “I’m more than eager to test that.”

“It won’t work,” Mia said, “I’m just grafted onto a horse’s body. Everything works the same.”

“Says the giant centaur,” Bella teased. She reached up and traced her fingertips along Mia’s human belly, expertly locating her unassuming erogenous zones, “I should’ve popped already. Besides, just ‘cos my stomachs too full, doesn’t mean my womb is. Far as you know. Bet you wanna find out now. Get up close and personal with your ‘little’ friends, inspect my pussy to make sure everything’s in place? And be extra thorough.”

“Bella…”

“Or maybe,” the slut turned around and lowered herself to rest atop her gelatinous gut. She reached back and pulled apart her voluptuous ass cheeks. It didn’t compare to Annie’s, though Bella didn’t have the perk of a small body to highlight her curves. Bella turned to look back at Mia, eyes wide and lips set into a lustful pout. Her face was an incomplete geisha mask made from cum, concealing her heavy makeup.

“You want to fuck my ass and cunt at the same time?”

“You’ve gotta be kidding me?” Mia whispered. Her cocks leapt back to life and slapped her underbelly once more. Pre-cum gushed from their peaks once more. They entangled her mind in strings and manipulated it, pulling her body toward Bella. She came to a stop standing over the slut. Her cocks laid across Bella’s back, but a new problem presented itself.

Massive though they were, Mia’s cocks couldn’t reach their target. Not to the degree they craved.

“Oh, for fuck’s sake,” Bella snarled. She tried to angle herself better, extending her legs and raising her hips, but neither worked.

Mia didn’t answer, fearful that she would express her dismay. How would she and Annie fare if Bella, who stood a full foot above the former, couldn’t reach?

“Lay down on your side,” Bella ordered.

“What?”

“If you lay down, then I can get your mammoth, horse cocks inside me,” Bella explained. Her patronising tone faltered toward the end, where it turned into a deep moan.

“Great, outsmarted by a slut,” Mia muttered.

“It’s because I’m a slut,” Bella said.

“Whatever,” Mia stepped back and carefully lowered herself onto her side. Even so, her horse half reached Bella’s chest, and her cocks looked no smaller in this pose. The slut shuffled over and stared at the sight, before she too laid down. She raised her right leg and arched her neck to guide her actions.

“Oh god, please ruin me,” Bella said as she stretched to grab one of Mia’s members. She pulled it to her pussy and pressed its massive head against her opening. The tip alone overshadowed the whole of her crotch, much less the tiny orifice it intended to ruin, “So hot… fuck, that’s gonna stretch me so good. Hmm…”

The whore trailed off as she pressed back and pulled. Her pussy almost gushed with pleasure, smearing its inhuman counterpart in nature’s lubricant, before the flow stopped. Silence crowded the air, broken only by Bella’s ecstatic squeaks as her snatch was stuffed fuller than any other. Its plump lips turned thin and pushed inward, swayed by the enormous meat entering it. Her clit sank with the rest of her cunt and ground against Mia’s cock.

“So tight,” Mia gasped after a long pause.

“It’s been a long time since anyone said that to me,” Bella chuckled and moaned. She sank lower and lower, easing Mia’s behemoth dick inside. The other slid along her back, dousing it in pre-cum, while its sibling poured into her. Less than a foot later and Bella stopped. Her stubborn cervix held strong against the would-be invader.

“That’s my cervix,” Bella said.

“You sound surprised.”

“This is really gonna happen,” the slut said, ignoring Mia’s words.

“You can back out anytime,” Mia assured her, though the dual cocks twitched in disapproval.

“Fuck no!” Bella grunted and bucked her hips. She used arms to pull Mia close and hooked a foot around the centaur’s leg, using it to tug herself down. Her grunt turned to a scream as her uterus, the sole place of sanctity her body retained, was defiled at long last. With a horse cock no less.

“Can you fuck me like that?” Bella asked. Mia attempted to, but couldn’t get a purchase with her hooves, “N-no worries. I got this.” The slut pushed away, sliding up the long shaft. Her juices replaced her spit, leaving it coated in a glossy sheen of her pleasure. A pleasure echoed by Mia’s cocks as one gushed into her womb and the other sought to drench her back as it had her front.

The slut shuffled backward, deeper and deeper until another foot of mottled black-pink horse cock stuffed her. Another two feet and she will have taken it all, even so its shape bulged from her abdomen. A tube ran from her slavering crotch to her lower belly, ill-defined against the sheer mass of cum that still swelled her stomach. Mia jerked her rump, managing to force several inches more inside. Her spare shaft crept along Bella’s back until it reached the nape of her neck.

Pre-cum splattered the girl’s hair, matting it to her already defiled skin. Bella shoved herself up, freeing herself of the added foot, then forced her cunt down, hard as her muscles could manage. She shuddered in bliss as her lips strained around the centaur’s sheath. Now fully buried, Mia’s cock outshone the slut’s belly. Its veins and head stood out in stark relief to her stressed skin.

Mia moaned at the tightness. It shifted around her length, squeezing at choice areas to encourage a greater flow of pre, and tried to draw her further in, unsatisfied with a mere four feet of cock. Like a wild animal, always hungry for more no matter how big its last meal. Or was it better compared to a stray cat? Give it a taste of luxury and it was hooked.

If so, then Mia needed to tame it. To fuck Bella into total submission. To take her like the bitch she prided herself in being. The question of ‘how’ stood in her way.

“You’re flexible, right?” Mia asked.

“What? Y-yeah, I am,” Bella moaned.

“Get on your back and raise your hips high as they’ll go. Don’t take my cock out.”

“What’re you…” Bella trailed off as her body followed Mia’s command. The centaur stood and stabled herself on the linoleum floors, taking care to position her hooves in the sparse dry areas. Her cock remained lodged deep in Bella’s snatch, eliciting shocked moans from the whore as she moved.

“Then I just,” Mia muttered to herself as she bucked her hindlegs to sink fully into Bella. Once comfortable, she kicked up, as a horse or bull would to kick off a rider or threat. In this case, she aimed to fuck this girl. Mia’s cock slid free of Bella’s cunt with a lewd squelch. She couldn’t control gravity though. Her rump fell. Her hooves slammed into the ground, leaving a series of tiny cracks in the floor, and her cock came with them.

Bella screamed at the brutal thrust. Her cry turned to gargles as the blow forced a deluge of cum to fountain from her maw. It splattered her face, covering her nose in the process. She turned her head aside as Mia repeated her assault. More jizz spewed from her lips as her gut bounced and jiggled. It slapped against her tits, shoving them against her chin.

The centaur’s open cock flopped with her pelvis crushing thrusts. It smacked and smeared Bella’s skin in pre-cum, heavy enough to leave red marks where it struck. Mia grunted as her cock bent at an awkward angle.

“That’s it, get my other dick inside. Now,” she growled, consumed in her lust. Bella curled in on herself and stretched for the centaur’s unoccupied prick. She held and angled it toward her asshole. In such a position, however, she couldn’t bend it enough to enter. Once Mia was certain her slut’s aim was true, she bucked her hips once more. Bella gurgled a screamed crossbred between ecstasy and agony.

Mia moved slower this time, as her second cock was entrapped in Bella’s body. Walls tighter than her pussy threatened to crush the mammoth head, before the shaft sank inside, breaking any semblance of strength left in the whore. She remained locked into position, legs at an even split, pussy on blatant display and inundated tummy crushing against her tits. Still more cum poured from her lips as Mia’s weight pressed upon her.

The centaur gradually sank to the hilt. Her sheaths wrinkled against Bella’s holes, each too tight to permit them entry. Mia didn’t care. She kicked time and again, each descent causing the cracks to deepen, their sound substituting for that of Bella’s bones. The slut took it all in addled bliss. Her pussy continued to massage and entice, while her anus clung tight to Mia.

“That’s it,” Mia moaned. She groped at her breasts, mauling them with her fingers as she sought her second climax, and raised each to her lips, alternating between her ripe, cherry-pink nipples. All her obvious pleasure spots were stimulated. Even her balls found pleasure as they bombed Bella’s stomach.

Her stomach. The thought lingered as she turned to watch it, wondering what would become of the massive sphere when both her cocks came inside. Every square inch rippled as fucked Bella, while two vivid bulges stretched it further, each desperate to see it explode. Her members throbbed and twitched within Bella, turned rigid as they dove into her and curved with her violated holes.

Reason had long since become a void concept. Mia defied it in her mere existence, a fact that seemed infectious as Bella endured – and even enjoyed – the brutal slams. During the faint reprieves, white bubbles simmered from her maw, before they were washed away in a fresh tide of semen. Where her stomach had shrunk, her womb expanded. An added bump developed beneath the first, comprised entirely of Mia’s pre-cum.

“Your body’s mine,” Mia said. An absolute fact. Bella was commonly known for craving sex more than food or water or even air, yet her appetite would be ruined now. Even if she turned to fucking horses, she would be left wanting something greater. Something impossibly huge, that only Mia could provide.

Was that why Annie never seemed interested in other guys? And the same for Keira. Both had enjoyed boyfriends in the past, but neither had one since Mia met them. The same for Rhona and several other girls she regularly spoke to. Did they all crave her cocks? Were they just waiting for her to make a move, to offer it to them and give a perfect excuse for why they masturbated to the thought of her doing so every night?

Mia bucked faster. She wouldn’t entertain these thoughts outside of this moment, or whilst she did the same to Annie and Keira. Three girls was two too many. Although, her mind objected, a fourth would be easily found and much more enjoyable. She could fuck two at a time, while the other pair worshipped her balls. Why not six? One for each cock and ball.

No. Eight. She’d need more for her tits. Maybe nine? So she could eat one out. A girl for every need.

“Shit, ah fuck! I’m cumming! Don’t you dare waste a drop, Bitch! Take it all! Every ounce of cum! Every litre! Every gallon!” Mia screamed and performed a final, powerful slam. Her sheaths slid into Bella at last, an extra inch of girth to truly seal in her cum. Though unnecessary, since Bella’s holes adhered to her cocks like a second skin.

Bella’s earlier growth seemed tame by comparison. Her gut bloated entire inches each second, quickly overshadowing her face. A flood of jizz poured from her upper lips, shoved out by the gallons of new seed pouring into both her womb and belly. Every explosion of cum resounded throughout the bathroom, resembling the noise of a water gun amplified by a thousand.

Mia’s rump swayed as she came, angling her womb-inflator toward each of Bella’s ovaries. The definition of her members was soon lost, overwhelmed by the smooth, mountainous curve of the slut’s stomach. Before long, she appeared to be trapped beneath a flesh coloured ball, one bigger than her entire body. The turquoise coloured flooring vanished under a thick layer of white.

“Holy shit,” Mia rasped. She stepped aside, taking care not to slip in her sloppy ocean of cum, and peered down at Bella. The girl’s ass fell as her muscles gave out, landing with a lewd splash. From head to toe, she was covered in semen. Her makeup ran in droves down her face, any remnants invisible beneath the layers of cum.

The centaur had gotten off lightly. Her cock dripped with Bella’s juices, and both oozed the last drops of her climax. Only half her fur was sullied, which was easily remedied by several wet towels, and she hadn’t gotten any on her human half, though her nipples glistened with her excessive spit. A serious problem floated against her hoof. She looked down and saw the tattered remains of her shirt.

“Fuck,” she groaned and strode to the door, took a second to listen for anyone, then stepped out. If she was lucky, she could make it to the changing rooms at the gym. They often had some clothes laying around. So long as it fit over her boobs, she couldn’t care how tight or revealing it was/ She took a deep breath and shielded her chest from any possible prying eyes.

“Come on karma, you owe me after that shit,” Mia grumbled and set off on her way.

Fortunately for her, karma paid its dues. She arrived without incident, found a XXXXL jacket and made back in time for her next class. Nothing was perfect though. Her shoulders strained the garment, as did her arms, and it didn’t reach past her boobs. Everyone with eyes ogled her abs, which had further defined themselves it seemed, and, those that didn’t, gawked at her chest. Her cocks remained quiet, however. For which, she offered a silent thanks to whatever god may listen.

Chapter 11 - Experiencing Another Threesome

So many people dream of fucking their doctors. They’re the perfect fantasy, most were rich and, to some extent, compassionate, they knew how to care for someone and they could get drugs. But it was for none of those reasons that Mia rocked her hind legs, gently urging her specialised physician to suck more of her cock. She had a simpler reason, but one that dominated all others; lust.

Roshni moaned around the colossal head while her hands lathered the second one in its copious emissions. Pre-cum gushed from both dicks, her throat worked to guzzle down its share, but still several ounces escaped and drooled down her chin, while the other cock hosed down her naked chest. It was a wonder that she could breathe like that, yet she made no effort to pull away. If anything, she tried to go deeper.

Without her lust, Mia might’ve thought the situation was comical. With it, however, she groped at her boulder-sized tits and moaned as Roshni did her best. She couldn’t see the doctor suckle on her dick, only savour the sensations, though her mind conjured an adequate visage. Her dual cocks twitched and lurched.

She saw Roshni in her mind, jaw and cheeks bulging with a flare fatter than any horses, bigger even than the woman’s entire head. And it was going down her throat now. The more Roshni gulped, the easier Mia slid into her. Yet another strange component of her body, one that she approved of, though it needed testing. Hilting what had to be six feet of cock in this petite woman would suffice.

That moment would wait, however. Mia rewound back to the present in her mind, closing her eyes and tweaking her thick nipples to the images. Her cocks had become a pair of broken faucets, unable to turn off their flow, which moved through the shafts like lava, burning and lavishing her senses in pleasure. When Roshni changed her angle, pre-cum exploded down her gullet and onto her chest. The bulge as she swallowed was puny next to Mia’s cock swelling her throat.

Deeper. Roshni worked further along Mia’s shaft, impaled on a mass too great to be anything but inhuman. Her jaw stretched like a python’s, her eyes bulged and wept in reverence, and her tongue writhed under the tumescence. All the while, her hands stroked and gripped what little of the second shaft they could reach. It didn’t scrape the sensations of the first, but she couldn’t complain. Though a second person would be perfect.

Yes, another throat to fuck. Diana was right outside, so close that a simple shout and she would come running, likely after cleaning up her clothes. Was she masturbating right now? If Mia’s pheromones were as strong as they appeared, it was probable, though maybe she had a stronger willpower than that. For all Mia could say, Diana was sat at her desk, stewing in the desires of her wanton cunt, desperate to get up and find Mia, to bend over and present herself. To get fucked deeper than any human alive. To become Mia’s personal broodmare.

“Mm, fuck,” Mia hissed and pulled a breast to her face. Something must be wrong with her to think such things. She couldn’t even get someone pregnant, not with the sperm her cocks produced, but her body was unlike anything humanity had seen. What if her sperm were compatible? What if, right that second, Annie and Keira and Bella were all walking around, unawares of the life blossoming in their wombs?

She stamped a hoof and surged forward. Roshni gagged and pushed against her, but took it all the same, until her chest puffed out with Mia’s cock, which sank lower, intent on her stomach. Whatever the case, regardless of if she could sire children, Mia was ready to breed. Her balls, all four of them, sloshed and rumbled against her hindlegs. Her thrusts lengthened, the force grew, until she’d pushed Roshni against a table nailed to the wall. It was designed for Mia to lay down on, as such the table was the size of kind-sized bed. Just in case.

Mia reared up and slammed her front legs onto it. The metal dented but held up well enough. With her hooves fastened, and Roshni unable to escape with several feet of centaur girl-cock down her oesophagus, Mia fucked her physician. She sank deeper into the lake that formed her bliss, heedless to anything that didn’t heighten her pleasure. Regardless, there was little to distract her.

Roshni didn’t struggle. She moaned, gagged and gurgled. Each thrust forced the air from her lungs, and unleashed the deluge of pre-cum up and out her maw. It joined the fresh produce that covered her torso and drooled down her legs, so thick that it overwhelmed the downpour of pussy juice. Every wasted drop was replaced a thrust later as Mia inundated her stomach in pre-cum. This deep, her second cock bent against Roshni and found its way to her salivating cunt.

Yet entire feet remained uncared for. The diminutive doctor’s hands only reached so far, even now they fell short of Mia’s eager balls, their vastness still expanding despite dwarfing watermelons. A faint tickle in her nose brought her attention to the musk she was exuding. To her, it was an earthy scent, like dirt and, of course, equinity but lacked the unpleasantness of it. All she smelled was fresh hay, grass, and groomed stallions.

None of which registered in Roshni’s mind. What tiny breaths she managed riddled her body with a tidal wave of energy, zapping her senses and focusing them on the objects of her inane lust. She spread her legs apart and clamped them around the crooked dick, her hands helped hold it in place, and ground along its length while gelatinous pre-jizz was wasted on the floor behind her. A whimper escaped her at the realisation. The longer she basked in Mia’s presence, the stronger her inner-slut became.

“That’s it, suck my cock,” Mia moaned from above, voice booming in her pleasure, “Take it down your tiny, human throat. Worship me. My flare, my veins, my huge, swelling balls. Mm, you’d beg for my cum if you could speak, wouldn’t you? Yeah, you would. You’re already addicted and you haven’t even tasted the real thing yet. Just some worthless pre-cum.”

Several inches of cock slid into Roshni, who gulped it down like she would die without it. The tendons in her throat were overwritten by Mia’s cock, its own myriad of dense veins bulging from her neck. Roshni’s hips were in a desperate state of lust. Lathered in Mia’s pre and her own copious cum, she glided along the second prick, pussy latched to a single vein bigger than her fingers. It throbbed against her snatch and echoed throughout. If she hadn’t cum already, her orgasm was nigh.

Three sharp raps on the door fished Mia from the abyss, though she remained mostly submerged. She turned to the door, hips still working to sink her cock, sheath and all, down Roshni’s sluttish maw.

“Doctor? I was wondering…” Diana’s words died as she stepped inside to a sight she hadn’t thought to fantasise of until then, “Mia?”

“Hmm, yeah?” The centaur cooed as Roshni struggled to pull free and address her employee, however Mia kept her trapped. Not only by sheer physical might, but also in her unending musk. It wasn’t a fog, more akin to a blizzard now. One step into its path and you were blasted in the stuff, covered in seconds, and overwhelmed before even that. Unlike a blizzard, it didn’t chill you, rather it enlightened your senses to the peaks of pleasure.

“Can I kiss your balls?” Diana asked. She didn’t look the giantess in the eye, as if incapable of looking away from the four, gigantic, and growing, testicles that crowded a single scrotum. They had a light coat of chestnut fur, which blended into the onyx, leathery skin beneath. Mia swished her tail about, an unconscious choice in spreading her scent around. The pink fur did nothing to distract Diana, who was already stripping. ‘No’ wasn’t an answer anymore.

And why would Mia refuse her? Another eager cock-whore had just walked in, one that wanted to give her balls some love. Annie and Keira were focused on her cocks more than anything, Bella was no different. Even the stray onlookers as she walked by would stare at her sheaths.

“Of course,” Mia said and widened her stance enough to give freedom to her tormented sack, without sacrificing her stability. She wouldn’t be much of a centaur if she stopped fucking Roshni’s face just to let Diana have some fun. The receptionist almost tripped over herself as she ran forward. She wrapped her around the quartet and shoved her face into the skin.

“Fuck!” Diana moaned into it, “Fuck, fuck, fuck!” Her cries reached a fever pitch and an off-beat splash made it clear that she just came.

“Really?” Mia giggled, “Did you cum already?”

“Yes,” Diana said and fell silent, save for fervent slurps and sloppy kisses across the expanse of testicles before her. She shuddered as she worked, caught in a constant haze of bliss, despite her hands being preoccupied with a set of balls. A mixture of spit and sweat soon coated her face.

Roshni was determined not to be outdone. Something in Mia’s fluids had awoken a true slut in the doctor, depriving her of any decency, just as it had done to Diana in the lobby. Anyone could’ve walked in there, yet she was willing, on the cusp even, to seduce and fuck Mia. Now, unfettered by outside interference, or their own worthless inhibitions, both doctor and employee were beholden to Mia. It would take an impossible willpower to stop.

None of them wanted to.

“How’s it taste?” Mia asked with a bounce of her rear.

“Like the dirtiest sex ever,” Diana said, “It’s so strong. I swear you almost taste like pussy, but… but there’s so much cock in it too. And cum, ooh, hmm… fuck! If this keeps up, I’m gonna get addicted to it. To you.” As she spoke, Diana maintained her hedonistic lavishing.

“Not like that you won’t,” Mia said and pushed her away with a leg, then pulled free from Roshni’s suddenly panicked maw. Once her body was freed of the two, she turned to Diana and ushered her to the table, “Get on it.” They did and, unbidden, fell to all fours and presented their asses to her.

Roshni’s had a small, yet bubbly ass. The kind that provided enough of a handhold for a lover, yet didn’t obscure anything for below, nor did they close around her tight, puckered star. Beneath it all, was her pussy. Neatly trimmed pubic hair framed the slop-coated mons, which, themselves, framed the pink folds that peaked out. She reached back and spread it apart, revealing her drenched hole. It was the smell, a sweet aroma to Diana’s spicier scent, that caught Mia’s intrigue.

“Are you a virgin, Roshni?” Mia asked.

“Y-yes,” Roshni said, “You’ll be my first cock. Your giant horse dick is gonna be my whore pussy’s first.”

“You haven’t even tried one yet, but you’re willing to have all men ruined for you?”

“Yes!” Roshni howled and looked to Mia, eyes glossy from tears and the unspeakable need boiling beneath the surface, “Fuck my pussy until it’s shaped like your cock.”

To her side, Diana moaned and spread her own cunt, shaking her hips. Mia laid a hand on her doctor’s ass, groping the supple flesh, while she took in the other desperate slut. Unlike Roshni, Diana was experienced. Her snatch showed the years of sleeping around, taking dicks and dildo’s and fingers inside herself. Yet none of them would even compare to the mammoth shaft Mia intended to shove into her.

“I can smell it,” Mia said as she clapped a powerful hand onto Diana’s fuller ass. It was a delectable sight, stacked high with rippling fat, yet perked up by the layer of muscle underneath, “You’re a real slut, Diana.”

“Yes,” the receptionist hissed and bucked her ass into Mia’s hand, “I’m a whore. I do anything for cock, pussy, even just a few fingers.”

“It’s a miracle you’re not pregnant yet,” Roshni snickered.

“Yes,” Mia agreed and spanked the self-admitted whore’s ass, leaving crimson handprints in her place, yet Diana’s pussy dripped in response, “Yet.”

“Can you even get us pregnant?” Diana asked, a voracious excitement in her voice.

“Dunno. Let’s see,” Mia said. A part of her knew this wasn’t rational. Only an idiot fucked their doctor, especially one who had been the closest thing to a mother in her teenage life, and someone who had been a happy confidant for much the same time. And yet, here she was. She had them side by side, hips touching, an innocent pussy next to a drooling whore cunt, with her own cocks ready to penetrate both. Could they handle it all? Six feet of cock each?

One way to find out, Mia decided and reared back. Neither female flinched as her hooves stamped over their heads. They raised angled their rumps toward Mia’s cocks and reached back, grabbing their respective phallus as they slapped against their skin. Even Diana’s longer fingers were dwarven compared to the veins. Pre-cum gushed across their asses and clung to their skin, even as the excess dribbled across their pussies. Once in position, the two shoved back.

Mia couldn’t see any of it. Yet she felt the impossible sensations of the two women opening for her cocks, spreading their bodies wider than they would during childbirth. Hip bones were forced wider, skin stretched and stretched, while their pussies swallowed her with greedy slurps. She imagined the scene and almost laughed, were it not for the surge of pleasure as both holes undulated around her in sudden, brutal orgasms that had the two shaking afterwards. Her cocks, each larger than the women taking them, were inside a pair of cunts, one of which was a virgin seconds prior.

From their crotches, the bodies lost their definition as Mia’s cock. It’s flare distended their lower abdomen and rose until it met their ribs, having stolen the once flat expanse of each woman’s stomach, leaving them an obscene, gnarled tube-like shape. Thick veins pulsed and drowned out the stampede of their own hearts.

Mia pushed, though her cocks couldn’t very well push into their ribcages. Roshni was first to understand this and, despite quivering under the impossible bliss of her inhuman patient’s cock, helped angle it. On Mia’s next push, she slid past Roshni’s ribs, along her sternum, bulging out her upper torso with the full brunt of her girth. Diana almost didn’t have the sense left to help, but she managed. Both fell forward as the strength in their arms gave out. Instinct kept their legs in place.

“So good…” Roshni slurred between infrequent moans. Her jaw had given out, allowing her tongue to loll out and drool down her cheek, and her eyes were glazed over, the life in them replaced by pure ecstasy that exploded again with each shift of Mia’s cock. A lurid grin still teased at the edges of her mouth.

Diana was no better. She had her chin testing on her hand, while the other gripped the edge of the table as if to crush it, a mindless smirk on her face. Her tongue also extended. Her body rocked with Mia’s slow thrusts, almost starved for pleasure it seemed. The bulge along her torso receded to her gut, then extended back, each time a little easier and less defined as Mia’s pre-cum flooded her.

It wasn’t these imagined sights that made Mia thrust harder. No, it was that she reminded herself of an obvious fact. She was in their wombs. She was stretching their uteruses throughout their chests, between their tits, almost into their very throats. Was this her life now? A perpetual festival of impossibilities, one after the other.

Her next thrust was yet another of those. The startled cries brought it to mind, though she couldn’t see it in person, she was certain that she was envisioned was true. Mia muffled her own shout of pleasure in her tits, the vibrations sending shards of pleasure zapping to, and up, her cocks. Both Diana and Roshni stopped moaning or slurring. They couldn’t do so, not with a six-foot dick up each of their gullets.

Did it stretch from their mouths? Mia kept pushing, wanting her mind to conjure the image of their wombs stretching from their maws, while also being used as a condom for her gigantic phalli. She held her place for a moment, savouring the image of her doctor and friend having their bodies almost replaced by cock. And not even a human one. There was no mistaking the flare, or the black colour that showed through their taut flesh, or the swell of her sheath as it also sank into their bodies.

However, she couldn’t remain like that. Her body had done incredible, unnatural things to the two, but they still needed oxygen to some extent. In that position, her cocks had their airways crushed against them. Mia retracted and the two sucked in haggard breaths, yet their pussies rippled around her, trying to squirt around the ultimate plug. On the next thrust, they helped to angle her away from their throats, freeing of the added restriction of their mouths as she shoved onward.

The table groaned under her weight as she pulled herself deeper, then stopped as her balls slapped the females’ thighs. She was in. This was every foot, every inch, every centimetre of her behemoth members. And they’d taken it all. Mia inhaled a nipple, savouring the inherent satisfaction of the moment and the pleasure of her new mates as they came on her pricks.

“This is… fuck…” Mia groaned. How could she describe it? She’d fucked before of course, even two at once just a few days ago, but this… the difference was night and day. Did her growth cause this? Or was it the mere fact that she’d practically started this by teasing Roshni? Maybe. The fact that two women had all but thrown themselves onto her dicks wasn’t new. Annie and Keira were the same. And Bella had been similar enough.

“So… fucking… awesome,” slurred Diana.

“Yeah,” Mia said. She couldn’t release her tits. Her fingers mauled them in search of greater pleasure, while trapping her plump nipples – each larger than an apple – and rubbing them between them her eager digits. It was pitiful compared to what her cocks experienced, but pleasant all the same.

“I’m,” Roshni giggled, “I’m more cock than person.”

“Yeah,” Diana followed suite and the shared in the mutual absurdity they experienced. Their laughter vibrated through their bodies and into Mia’s cocks, causing her to resume her thrusts.

“Yesss!” The two cried, then fell silent as their strength gave out. Anything left was used to keep their asses high enough for Mia to fuck them, though her cocks were hard enough to support them all by themselves.

Each pussy was a small symphony. They sucked on her cocks as they exited, then squelched on entry, a splatter of juices fell on the table and fell to the floor a moment later. Diana’s was louder, like the slut she was, and her voice hadn’t given out yet. Incoherent words flowed from her mouth. Their meaning was obvious, however; more. Always more.

Roshni was quieter, reserved. If Diana was the brass in an orchestra, then Roshni was the accentuating strings. She offered a soft, high-pitched series of moan, while her snatch occasionally bellowed at the height of its performance, then returned to a soft squishing. Where Roshni was the clear superior was in how prolific her fluids were. They gushed from her like a series of miniature geysers, while Diana’s were mere faucets left on.

But both were united in their ecstasy at being fucked by the centaur. At having their pussies ruined for all other cocks. It’d be a miracle for them to return to normal afterwards. No matter how long they had to recover or adjust, their holes would forever be tight sleeves for Mia, like a pair of human condoms. So tight, in fact, that each felt the breeze on their inner pussy walls as Mia pulled away.

“So good,” Mia moaned from high above, a voice of a goddess in their pheromone and bliss addled minds. Her balls continued to expand, churning a far greater load for the two human mares, even as they swung to and fro, striking each woman on the former. She recalled what became of Belle, how she’d inflated into a human-sized ball of cum. That was with both her cocks in one hole, but Mia had been smaller then.

“I’m gonna make you both swell up,” Mia said, wanting them to know how little control they had now. The thought should have given her pause, but the reason for it was obvious; she was the stallion here. They were a pair of holes to fuck. Easy as that. Their rightful place was here, impaled on her every fat foot of her dicks, while swelling up with entire ounces of pre-cum by the second. And, before long, they would be inundated in her semen.

“You’re both gonna be balls of cum when I’m finished,” she continued, thrusting hard as her body could manage, heedless to their safety. If they could survive taking a seventy-two-inch cock to the hilt, then they could handle some force, “Entire gallons of my baby batter will flood your wombs. How much sperm do you think there’ll be, Roshni?”

The doctor gurgled in response, though her pussy clenched in blatant joy at the idea.

“No idea either,” Mia chuckled, “Bet it’s gonna be high in the trillions though. Maybe the quadrillions? Or higher! Imagine if I could get you guys pregnant? Fuck, you could end up carrying entire litters of my children. I bet you’d get so fucking huge. You’d be like a pair of human boulders.”

Both of them came at the image laid into their addled brains. It didn’t matter what they might think of the matter anymore. They were Mia’s to be used and fucked and bred as she wished. Diana’s belly extended far past her head, a mirror of Roshni’s own predicament, though the doctor’s was absurd by comparison. She stood almost a foot smaller than her receptionist, and now she had six feet of horse dick piled into her. But what did that mean to her anymore? Everything she’d learned in medical school, everything she’d spent her life doing, even the semi-maternal feelings she’d built towards Mia, all were meaningless. Roshni’s eyes rolled and her body went limp.

Diana followed soon after. Thrust after thrust rocked their senseless bodies. The bulge of Mia’s cock sank to their heads, then bellowed toward the wall before them. Each detail showed through their taut, shiny flesh, as did the constant jets of pre-cum as they exploded against the uterine walls. The underside rounded out as they were flooded.

“Oh god, I can’t take much more,” Mia moaned, heedless to her cock-sleeves heedless states. All that she heard, felt or cared about were the two cunts slobbering over her twin pricks. Fucking them was an impossible joy. As she slid back, their walls closed, almost seeming to swell to suit her desire to break through once again. Each little nook and cranny conformed to her veins. The glands that produced their juices had become open floodgates.

Yet none of it escaped without Mia’s help. Fem-cum gushed forth as she slid back, pulling it with her. The puddle on the floor had spread, consuming much of the examination room, where she’d once taken solace in Roshni’s company and advice. For so long, she had only felt comfortable here, away from the throngs of staring eyes and maelstrom of questions. Now it had become a place of pure, unbridled lust.

Mia grunted and slammed her hands into the wall, hard enough to leave holes in the stone. She saw them and hooked her hands inside, ignoring the jagged edges she’d made, and used it to push and pull herself at an even greater pace. The splash of fluids increased, as did the voracious churning in her balls. Nothing smelled of the sterile equipment she was used to. Her musk dominated the room, accentuated by the two cunts pouring onto the floor.

“Fuck, fuck, fuck!” Mia groaned under her breath. Her cocks throbbed with need, ready to unleash a biblical flood of cum into the two broodmares. God, how she wanted to just let go. Both girls had already cum a dozen times, or were close to it, and she hadn’t done it so much as once that day. So unfair.

But cumming meant leaving these glorious sensations behind. At least until she called Annie. With Mia’s size and speed, it wouldn’t take long to meet up with her. Or perhaps Bella would be ready for another double helping of centaur jizz? No, not after how Mia had left her yesterday.

Why settle for one? Or two? She should call all her friends and invite them to the clinic, where they could help clean up Diana and Roshni, before they all turned and worshipped Mia. It would be glorious. Nothing on her body would go unloved, even as she fucked another load into someone. There’d be someone to lick and massage her balls, people to sit in her arms and suckle on her tits, and even someone’s pussy for her to devour. It wouldn’t end until everyone was an overinflated balloon of her seed.

And who would deny her? Keira and Annie had already sampled her cocks, and Bella might not even care that she still looked like a whale had moved into her womb. What about Rhona?

“Oh shit!” Mia glanced to a clock and saw the time. Last week, she’d promised to meet Rhona at the mall today. It was more necessary now, since Mia doubted her current wardrobe would last longer than another day if she kept growing as she had done. She had fifteen minutes. Rhona was a punctual woman, the kind that teased you for being even a minute late.

“Gotta cum, gotta cum, gotta cum,” Mia said and affixed her mind to the sensations bombarding her. It didn’t take long for her imagination to obtrude its influence. She saw Rhona in the nude, as she had before while the ebony woman changed outfits in front of her, except now she was enticing her. Rhona kept her hands over her chocolate nipples, the palms just big enough to shield them, while her hips swayed side to side in a seductive, primal motion. Then she turned and presented the greater ass Mia had seen or imagined.

It was the same one that she would fantasise about having when she was a human, before she understood its detriments. Daily gym visits had built the ultimate bubble butt on Rhona’s form. Her cheeks flared from her waist into a rounded shelf, the kind people photoshopped themselves to have. Muscles surged beneath the layers of fat she’d worked to maintain, keeping the bounty firm yet jiggly. And, like all great asses, it blended back into her luscious thighs.

Her imagination jumped ahead to her hilting in both Rhona’s holes. They welcomed as her friend always did, accepting her as she was, no matter how many feet of onyx, vein-riddled, cum-packed horse cock that meant taking. And, slowly losing herself to the throes of bliss, she pictured herself growing then and there. Taller, stronger, greater.

So huge that she dwarfed houses. So massive that her cocks became mansions. So utterly gigantic that she became the earth itself. All the while she fucked her friends one after the other, leaving them heavy with her children.

“Fuck!” Mia shouted and her vision shattered as bliss exploded in her brain. All control was removed from her, leaving the path clear for her cum. Roshni and Diana both regained enough sense to sputter, moan then scream as they were inundated in jizz. The first blast rocketed through Mia’s urethra, swelling her shaft as it went. Her flares both doubled in size, perfecting the lock she had on the two, though it was unnecessary.

“So much!” Roshni shrieked as her already ruined womb inflated to a heavy ball of cum, despite the giant spire that still extended far beyond her, from which a second, more forceful shot collided with the wall.

“Keep cumming!” Diana said beside her. The slut was in her personal nirvana, even as her knees were lifted from the table by her stomach. Through hazy eyes, Roshni watched Mia’s cock swell from base to tip, then explode with semen. The centaur hadn’t been bluffing about the gallons.

“Don’t stop,” Roshni said, losing herself in the fourth burst. Wherever Mia’s sperm touched her womb, it ignited her pleasure, almost refining it until she once again lost her grip on the conscious realm. All she saw was the white of a billion nerves detonating in a chain reaction of ecstasy, and the envisioned chaos of sperm now inside her womb.

Mia continued to thrust as she came, her body on autopilot as it sought to better impregnate them. She angled her rump blindly, hoping to thrust against their ovaries, despite being much, much too large for such a feat. Even so, she persisted. Her balls continued to swell, though they diluted faster now. From the size of what she guessed to be beachballs, they shrank to mere grapefruits. But sizes were always deceiving in Mia’s case.

Where one might expect a few gallons of cum at most, based on the size of her testicles at the time, she left both Roshni and Diana insensate, laying atop twin orbs of cum, each the half again the size of their entire bodies. Mia clenched muscles deep in her body, hoping to squeeze the last of her orgasm out. It worked, pushing the viscous remnants that had stuck along the inside of her cock. Both females were lifted another inch.

Mia panted from atop them as she pulled away. Five minutes left. She might still make it, if she left Roshni and Diana on their own, but she couldn’t. As they were now, they might slip and fall. She helped them to the floor, ignoring how their pussies gushed against her, and made sure they were stable enough not to tumble over. It took all she had not to linger on her handiwork.

“Mia?” Roshni said, rousing back to consciousness once more.

“I’m sorry,” Mia said.

“Don’t be,” the doctor smirked and rubbed circles into her enormous belly. Her navel had popped out, and the expanse had the illusion of solidity. Beneath it, her pussy sat splayed open to the size of a watermelon. It undulated, trying to return to its former tightness, but the damage had been done. On both it and Roshni’s psyche.

“I think you really did ruin my pussy,” Roshni said and giggled.

“You’re not mad?”

“How could I be? It might be your pheromones, or something else entirely, but I love you, Mia. And you were perfect for my first time.”

“So, uh… we’ll do this again?” Mia asked.

“Absolutely,” Roshni beamed, “Now, come over here. I can’t let you leave with your cocks covered in our cum like that.”

“Yes, ‘Mom’,” Mia rolled her eyes, but trotted over to let her slowly softening erections hang by the doctor’s face.

“Hmm,” Roshni took a long inhale as she nuzzled into the slimy shaft. Her face came away with viscous strings of cum attached, “I could never get enough of that smell.” She soon took the head in her mouth and sucked it clean.

“Hey! I want another load too,” Diana said.

“She, ooh, she’s just cleaning me up,” Mia said.

“Yeah, right,” Diana crawled over and took the other cock into her mouth, stroking and sucking it as she would a flaccid cock, “Come on, get hard for me. My womb’s full, but my belly’s really hungry.”

“Don’t…” Mia trailed off as the two worked.

“I can’t help it,” Roshni said as she lathered the massive cock in her spit, “Fuck, I need more.”

“I’ve gotta meet a friend in a few minutes,” Mia protested.

“Then hurry up and cum,” Diana giggled.

“I have an idea,” Roshni said and leaned away, then her fingertip circled Mia’s broad urethra, before slipping into it.

“Fuck!” Mia shouted as Diana followed suit. Not long after and they got their wish.

-Twenty-five minutes later- 

“Sorry, sorry, sorry!” Mia said as she galloped through the mall. She spotted Rhona by the wish fountain, though most people just stole the pennies thrown in by children. Her friend was turned away at the time, checking her phone.

“It’s about time. Jesus, I was about to send a search… party…” Rhona’s voice diminished to a mere breeze as she look upon Mia, “Um… growth spurt’s still on, I guess?”

“Y-yeah,” Mia shrugged and looked down at her friend, over whom she stood almost six feet higher. Rhona wasn’t tall like Keira, but she wasn’t short either. She was in the middle, a nice five-foot-six or seven, Mia assumed. Now, however, she truly looked tiny. As did almost everyone.

“Clothes first, then,” Rhona said and led the way.

Chapter 13 - Experiencing New Thoughts

She had fucked it up. Mia trotted through her home, ducking to avoid the ‘low’ doorways, and settled before her tv. She couldn’t settle on anything and left it on a random documentary, though her mind stamped any information out, too caught in what had transpired with Rhona. No one had denied her like that, or at all, since this ridiculous growth spurt started.

Even now, her shirt tightened against her chest. If she looked down too long, she could see the slight wrinkles straighten and the design distort around her breasts. The neckline dipped as if pulled by weights to reveal more of her cleavage. Mia removed it with a huff and stared at her bra destroying mounds. Nothing in the stores fit. They were barely enough to reach her areolae before the straps’ elasticity gave out.

Those concerns could wait. What she needed to focus on why she behaved as she did. Any number of possibilities arose, each plausible and deniable in equal measures. Hormones were the likely culprit, given what her body had become. That’s right. It wasn’t her fault, but her body’s. If she hadn’t become a stupid experiment, if that crash hadn’t happened, then none of this would be a problem.

She’d be a normal girl. A gymnast if all went as planned, maybe on her way to the Olympics. Her coach had claimed she was a prodigy after all, and she practiced longer and harder than anyone she knew. Except Keira. It was a miracle that she slept with how often she worked out.

Mia folded her legs and leaned against her horse half. The fur was soft under her fingers, but layers of muscle, thicker than any she’d touched before, ran beneath it. This was a horse’s body after all, a stallion’s at that, of course it would be stacked with power. At her size, she could outrun any prized racehorse. Oh, that sounded great. To feel the wind in her hair, rippling her fur, carrying her tail and breaking against her sheaths would calm her.

“It’s not that late yet,” Mia murmured and climbed to her hooves. She went to grab her shirt, but left it, “Not like anyone will mind.” Her closest neighbours were a mile away. She stepped from her home and into the fresh air. A few circuits around the land, then she would get some food. The pantry and fridge should be stocked, since the suits who catered for her hadn’t messed up from day one.

She went to the border of trees around her land. The leaves tickled at her fur. A breeze stiffened her nipples in the cooling weather, while her eyes drank in the orange splendour of the sunset. Her house cast a stretched shadow to her. That would be her marker.

Mia broke into a gentle gait. Without another person on her back, she could focus on her muscles and let them move as they wished. They pushed against her hide, lifting and falling to a building rhythm. Each cycle swung her balls, which made her sheaths bounce in place, while her breasts followed their lead. As she built to a gallop, the air turned to a whistling gale as it broke before her.

Sky and tress blurred together. She upped the tempo. Her hooves thundered into the ground, leaving dense imprints for her to follow. The air chilled further against her skin as sweat snuck to the surface. Stray drops were flung from her bounding chest, which clapped off-beat to her hooves. Each slap of moistening flesh tempted her thoughts, luring them to other pleasures.

Tendrils of air glided past her sheaths. They snuck teasing licks at the peaks of her cocks, ushering them further into the wind, while her balls became matted in sweat. It was almost uncomfortable to have such a strong current against her pricks. She knew someone who could solve that. Several people in fact. Any would be glad to be strapped to her belly, while their own bulged with seed and cock, all while she rejoiced in her freedom. It would heaven.

She could have someone to each cock. They’d make out while she ran and fucked them, rubbing their sweaty forms against her underbelly, marking her in their scent and vice versa. But, unlike theirs, her odour wouldn’t fade. They could shower, use whatever lotion they wanted, but they’d still wake and smell of her. And they’d want more. Any one of her friends would line up again to be drenched in dick sweat and filled with cum.

Mia panted as she came to a stop. She needed to cum. She twisted her body around and saw her erections, each throbbing visibly, lusting for a pussy or ass or mouth, or any combination of the three, to be stuffed into. The day had passed, however. She couldn’t call her friends at such a time. Annie needed to study, Keira would be working out and Rhona… probably wanted nothing to do with her.

She supposed Roshni was an option. As was Diana. But they were off hours. What reason did they either have for coming to her? Sex was a good one, though she didn’t want to impose. A blatant lie. Every neuron in her body flared in need. A need that couldn’t be satiated without someone’s help.

Dejected, Mia returned to the house. Her cocks bobbed and slapped into her stomach, each connection was a glimpse of pleasure, though not enough to get her off. Perhaps she could talk Roshni into getting a ‘relief worker’ stationed at her home? She doubted Annie would mind. It bordered on a medical need. Given what she could ejaculate already, she dreaded to think what might happen if she stored up for days on end.

The house seemed smaller than when she left it. Which should be impossible. She couldn’t be growing that fast, but she wasn’t so sure. Her shirts in in the past week had grown tighter as the days wore on, and it would explain why her libido wouldn’t shut up if her hormones were so active. That being the case, what was the point in buying clothes? She should just buy a poncho and leave it at that. It’d make touching herself easier.

“Jesus, what’s wrong with me?” Mia sighed. She leaned against a wall, keeping her weight off her dual erections. Just the slightest pressure and pre-cum oozed out. Sweat dried on her skin, leaving a dense, musky odour in the air, but a shower seemed too much effort. She yawned and shuffled to her bed, careful of her shafts, and settled in. It was early, but she would rather sleep than suffer her arousal.

Sadly, sleep can be brittle, shattered by some random noise or an overbearing thought. Mia jerked back to consciousness, groggy and annoyed. Darkness recessed in the window, her tv the only source of light. She rubbed the sand from her eyes and stifled a yawn. Well, she was awake, so she should at least get a drink.

“Oh, great,” Mia said. Her cocks were still hard. They seemed almost angry at her for leaving them. Her dreams must’ve fuelled them too. She had faint recollections of Annie and Roshni’s tiny bodies grinding against her massive one, teasing her until her balls were bigger than them. Why couldn’t it have been a wet dream?

“Shit!” Mia yelped when her head hit the ceiling. She’d grown in her sleep. Of course. Now she couldn’t stand upright in certain parts. Hadn’t they said the ceiling was raised for her? Most were about eleven feet high, hers was closer to thirteen. If her growth didn’t stop soon she’d need a new place to live. Like a stable.

Some parts were taller than others to her fortune. She moved to the kitchen and stretched, sighing at the satisfying crack of her joints, and the heavy jiggling to her bosom. As she looked to them, taking in their new size – which dwarfed her head, which likely shamed basketballs – her gaze glimpsed a black, flat shape. Mia shoved her glorious melons apart and saw a welcome, if shocking sight; her cocks had reached her front legs.

“Wait, then that makes them, um… a horse is about as long as a person is tall I think, so… Holy shit,” Mia twisted her human half to see how her equine form stretched from view. Her tail swished to and fro, tickling her enlarged testes. She gulped. If she was hitting her head, then she was about thirteen feet tall, therefore her body was about as long. Mia grabbed a pitcher, filled it with water, and glugged it down.

“Okay,” she said after a deep breath. Her stomach rumbled in response. She’d forgotten to make something before falling asleep, “Got it. Guess I’ll just make pasta or something.”

Fifteen minutes later, she held a plate stacked high with penne and a tinned sauce. Another, identical plate rested on her table, waiting for its turn as she inhaled her meal. A third, emptied dish rested beside it. She’d put on a random sitcom in the meantime. Wasn’t bad, not hilarious but amusing enough.

As she finished the third plate, someone knocked on her door. Good timing, she thought and carried her dishes back to the kitchen, her stomachs full and relaxed. Like other impossibilities, her horse stomach had acclimated to her human diet. It would be a nightmare otherwise. What would she even order at McDonald’s? The cheeseburger with a side bale of hay? She shuddered at the thought of it.

Another knock, “Coming!” Mia boomed and swallowed her voice. She hadn’t realised how loud she could be now.

“Good evening, Mia,” Roshni said in the doorway. She forced the words out as she took in Mia’s form. Her lips refused to close and her eyes seemed strapped open. A drop of spit glistened on her lip.

“Um,” Mia rubbed at the spot.

“Oh! Sorry,” Roshni rubbed it away and stepped in. She had a small briefcase with her.

“So, uh, what brings you here?” Mia asked as she led the doctor inside. It wasn’t necessary. Roshni had been instrumental in finding and modifying the house, so she knew it as well as Mia.

“I couldn’t sleep,” the doctor said and rubbed at her darkened eyes, “Kind of your fault. I passed out after you left.”

“Sorry,” Mia giggled. Her erections had calmed, though they still hung halfway from their sheaths. A tremor rolled through them, as if they’d recognised Roshni’s presence. She sat and offered the lonely chair to her friend.

“Not a problem. I loved it,” Roshni said, her bronze cheeks warming as her legs clenched together. She cleared her throat, “Uh, anyway, the reason I’m here is because I think I’ve worked out how to pause your growth.”

“Really?” Mia all but leapt at her. Instead, she reached over and pulled her into a deep hug, squishing the petite woman into her bosom, “That’s great! Thanks.”

“Yep, I’m awesome,” Roshni chuckled, muffled by the huge tits moulded around her, “Just a quick injection and you should stop. I don’t think I can reverse it though.”

“That’s fine,” Mia said and set her down, then offered her arm. Excitement plumped her veins and brought them to the surface.

“By the way, haven’t you showered today?” Roshni asked. Her nostrils were flared and pupils dilated. A dreamy sigh escaped her lips as she licked them, tasting the remnants of Mia’s sweat.

“Uh, this morning I did, but not since. Sorry, I must stink.”

“Yeah, but it’s the good kind,” Roshni said and opened the case. Inside was a laptop, a syringe and a pair of latex gloves. Mia thought about if she should’ve used condoms thus far, but the idea was ridiculous. As much as her current state of being was. A condom wouldn’t fit her, much less hold her load.

“Since when were you such a slut?” Mia asked with a slight giggle. She had her suspicions but wanted to hear it from the doctor’s lips. Those delicate lips, which had just hours ago been wrapped taut around her cock.

“I’d wager since you stepped into my office today,” Roshni said and filled the syringe. It looked like a plain liquid, slightly thick and translucent, “Pheromones are a bitch.”

“Don’t hear you complaining.”

“Of course not. I had the best sex of my life because of them.”

“How about a repeat?” Mia asked, urged by the steady flow of desire in her veins. She smirked and leaned in closer, her naked chest coming within mere inches of her. Roshni’s breaths deepened, dragging more of Mia’s chemical-laden musk into her sinuses. It must have strengthened, Mia thought as her cocks expanded, stretching toward the doctor.

“My pussy still hasn’t recovered,” Roshni said, though it was less an excuse and more an awed statement. She rubbed her sleek thighs together and sighed, “And Diana’s not here for the other one.”

“I think you could take both this time,” Mia said, breathing the words as the needle entered her arm. She didn’t feel it. Her attention was locked on Roshni, watching as she depressed the syringe and tugged on her shirt, letting out glimpses of her chest. Though slight, her dusty nipples stood proud, eager for attention.

“They’re twice as big as me,” Roshni said.

“I know,” Mia whispered and sank down. The needle was removed and set aside. She picked Roshni up like a child and pulled her close, letting her take deep, saturated breaths now, “Can’t you imagine it? My cocks sliding through you, up your belly, then your chest, until they’re past your head?” As she spoke, Mia traced her fingertips along Roshni’s body, then used them to lift her chin. Their eyes met, each captivated by the other’s lust, “Then you can take every last gallon of my cum.”

“Gallons?”

“Yep. You’re welcome to go around back and feel for yourself. My balls are pent up right now. Someone turned me down earlier, and I got hard at home. Without anyone to relieve me. Can you imagine that? But you’re here now.” Mia slipped her hands into Roshni’s clothes, stripping her of the nuisances, before sliding a finger along her pussy. The lips were swollen, soaked, and gaped. Could she expect anything less? The hole had taken something bigger than a baby for at least an hour. It’d be a miracle if it recovered at all.

“Yes,” Roshni sighed. Her eyes glazed over and she sank into Mia’s bosom, kissing and licking her salty skin. Long breaths tickled her skin, as she bucked her hips against the centaur’s fingers, mewling like a needy kitten. Mia slid a pair into her, then added another set, before tucking her thumb in as well. Her fist popped inside with ease and was wreathed in Roshni’s drenched, velvet insides. They squished against her hand as it opened and closed.

“So loose. You got fucked once and people will think you’re taking fists up here every other minute,” Mia said. Her other hand found Roshni’s pert ass, “What about here, hmm? Shall we get to work on it?”

“N-no,” Roshni shook her head, but arched her back, “Just my pussy. Fuck my pussy.”

“With both cocks?” Mia feigned shock, “But look at it! The poor thing wouldn’t recover if I did that.”

“I don’t care!” Roshni whined and humped against her forearm, her juices drooling down it as she sank deeper, “Stop teasing me! Please, Mia? I need you now.”

“Is that why you came here instead of calling tomorrow? To get another taste of centaur cock?”

“Yes!” Roshni cried.

“Then we’re gonna need to get you ready.”

After some thought, they were decided. Mia held her doctor aloft, while Roshni’s legs wrapped around hers, placing her pussy in the path of blissful destruction. Lust thumped through Mia’s veins, jerking her cocks to its beat. Each head brushed against the doctor’s ruined cunt, smearing it in pre-cum. Every beat seemed to press a little closer, almost entering Roshni. Mia toyed with her, dipping and pushing the tiny human without ever penetrating. Once the begging started, she flipped her around.

“You ready?”

“Not my ass, okay?” Roshni said.

“Don’t worry,” Mia said. She had no intention of fucking her ass yet, not when such a ripe, gushing pussy waited. With a few swings and thrusts of her hindlegs, the seemingly impossible happened once more and Mia entered Roshni. It was one cock, yet her hole stretched like never before. The walls suctioned to the ridges, palpitating with the veins, before slurping on it as the shaft retreated. On the next thrust Roshni’s legs guided the second shaft.

“Too… big…” Roshni croaked. Her body was frozen but malleable. The petite woman’s crotch bellowed forth in the shape of Mia’s cocks, each stacked on the other. Every vein, every slight protrusion on their surface was highlighted. Even the spurts of pre-cum were visible against her helpless form. The bulges sank deeper, rising along her stomach to barge past her unprepared cervix, still loose from earlier, and up past her sternum.

Mia wished she had someone else there. Anyone would do. She licked her lips and imagined having Diana or Annie’s snatch at her tongue’s mercy, tasting them, torturing them into orgasm while their puny hands groped at her enormous tits. How would it feel to have ten small digits wandering over her breasts? They’d struggle just to hold her nipples.

Pleasure zapped through her. Roshni was jerked into an orgasm as her constitution gave out. She cried and moaned and begged for more, while Mia indulged in her fantasy. She tugged on her teats, thick with want and longer than a soda can. Someone could fuck themselves with such things. It was easy to imagine Annie astride her tits, pussy and ass stuffed not with dick, but nipples.

Mia raised a breast to her mouth and inhaled it, tasting herself. The tang of her sweat remained and strengthen as she thrust into Roshni, who held onto her legs for stability, lest she fall from her perch. The possibility was non-existent by then, as her torso was dominated by dickgirl-centaur dick. Still they surged through her. She pushed on the legs now. What little sense remained was devoted to destroying her body with Mia’s cocks.

“Yes… deeper… fuck my womb, fuck my tiny womb… fuck my everything, oh yeeeesss!” Roshni slurred as she plummeted in a second climax, with a third hot on its trails. Her pussy and womb both clenched, as if to remove the monstrous invaders, but only sucked them deeper. Pre-cum churned inside her uterus, swilling with her bucking hips and eager pushes. The deformed tubes that bulged through her flesh lost detail as her stomach was weighed down with pre.

“Hmm,” Mia moaned around her tit. What was it about sex that made everything wrong seem perfect? Her body was growing, which meant more sensations, which meant greater pleasure, which translated into orgasms. Her cocks were twice the average human’s height, but that equated to better sex. Her balls weighed a ton and grew heavier by the second, and all she thought of was how grand the load would be.

Sperm by the trillions pooled together in fluid, turning it opaque and white. Just a drop of it would assure pregnancy. There it was again, the fantasy of impregnating someone. The idea was fast becoming her favourite fetish, but it must be impossible. Her sperm was that of a horse. No human could conceive from it.

Facts mean nothing to her. Mia indulged in the visions of her friends, even just acquaintances, falling massively pregnant with her young. No matter what she thought, the possibility was there. Being a centaur should have been a fantasy, as should her cock duplicating, and so was her current height. Yet they existed. She existed.

“I’m gonna get you pregnant,” Mia said, “Doesn’t matter how many loads it takes, you’re gonna be my mare. You’re gonna birth my foals. Got it?”

“Y-yes! Oh fuck, yes! Whatever you want! Just keep fucking me!” Roshni was beyond her words. If they meant they could keep going, then she was happy to hear them.

“I’ll make you massive! So huge you won’t be able to walk. You’ll just be a belly with a mouth to suck on my cocks,” Mia growled. She thrust her quarters, but Roshni had reached her limit, unable to reach either of Mia’s legs. She hung on the cocks like a useless onahole without a master. Her pussy made up for it, however.

Every word from Mia’s mouth made her its walls ripple from opening to the womb. She writhed in place, desperate to find deeper satisfaction. Her lips strained and dribbled cunt juice. In her blissful stupor, Roshni brought her lips to Mia’s underbelly, worshipping it as if the flesh were that of her balls, while her arms embraced the monumental bulge in her torso. There she found new leverage and fucked herself on the obelisk.

“That’s it you fucking broodmare,” Mia said, “Fuck yourself on my cocks. Ruin yourself for anyone else. No one, human or otherwise, can fuck you like this. You’re mine. Your womb is mine. Your cunt is mine! Your eggs are mine!”

“Yes! Yes! Yes! All yours! I’m yours! Oh fuck, nothing can fuck me like this! I’m worthless now, just a stupid cum bucket, baby factory!” Roshni babbled.

“Fucking right!” Mia roared. Something deep in her body clenched and Roshni was launched forward several feet, until her hands met Mia’s legs again.

“Are you cumming?! Please cum in me!” Roshni pleaded.

“Calm down, bitch,” Mia said, panting, “It’s just pre-cum. Now get back to work!”

Roshni returned to her position, sliding along the dripping pole until another pressurised jet of pre sent her racing. So it continued. Each time, she would push herself back from Mia’s front, stomach fuller and rounder from the latest load of pre, and fuck herself until she returned. Mia needed to do nothing, such was her place. She was the stallion here, alpha to Roshni. If she raised a finger, then the broodmare had failed in her duties.

Such thoughts infested Mia’s mind. Whatever the situation, she was supreme. Annie worshipped, as had Diana, Keira and Belle. So would Rhona. It’d take just a minute and she, too, would be enamoured. Then more women would join in. More and more, until Mia had an army all to herself. A private line of horse-cock whores eager to bare her children.

“What the fuck?!” Mia gasped and shook her head, still the pleasure pervaded, but it was dampened. Roshni ignored her, too caught in the umpteenth onslaught of ecstasy. The centaur rubbed at her temples, trying to sift through her pleasure and isolate those strange thoughts. It was hopeless, however, as the sensations in her cocks obscured everything.

It could wait. Her balls almost ached with their unspent load, a combination of Rhona’s refusal and her lapse in control weighed them down. They’d swollen enough to rest against the backs of her legs, down the shin. She brought her nipples back to her mouth and poured herself into the bliss.

The pleasure flowed unabated. It roared through her veins, raced across every nerve ending and set them alight, sparking other fires or snuffing them out to pave the way for a fiercer blaze. Roshni’s cunt rolled along her cocks like a starved whore’s throat, wringing more pre-cum from her overburdened balls. Each spurt must’ve been as dense as the real thing.

Mia’s nostrils flared. The air was mired in sex, mostly her own but traces of Roshni’s snuck through. It almost seemed build before her as a fine mist, too faint to be certain, yet too thick to ignore. She inhaled it, tasted it. It might have been gasoline for the damage it wreaked. Her body flared, sweat dribbled down her skin and fur. The intoxicating stench saturated her bloodstream. She needed to cum.

Oh yes, she needed it. No longer want, but need. Both pain and ecstasy poured from her balls as they gurgled, a perfect sound for her desire. Fuck! She wished she could reach them, just to massage the ache. Having just one person wasn’t enough. Two might not be enough. She still wanted to taste pussy and fuck it at the same time. She’d need more.

Annie, Keira, Roshni and Diana. All four would be perfect. Her personal orgy. Every girl would tend to her, licking and kissing and massaging and worshipping her growing body. Their reward? Simple. They’d trade places with whoever was on her dicks at the time, get a massive load, then move on. All her needs would be placated.

Someone to adore her nipples as she drowned their pussy in her spit. Another to cradle her ever-tumescent balls as they became addicted to her musk. A third and fourth to her cocks, one to take them and the other to help it happen.

She moaned into her breast, brow furrowed as her gut clenched. Not long now. Then everyone could gather around the one on her cocks and slide along every foot of her all-encompassing shafts, before backing off to watch their belly turn to a semi-sphere of cum that would expand until they couldn’t take anymore. Though no one else was around, she was happy to realise the ending.

“Fuck! I’m cumming! Ahh! Yes! I’m cumming inside you!” Mia cried. Roshni’s limbs latched to her cocks as they swelled half-again their original size. The size stood out in stark relief to the Indian woman’s form. Each stomp of Mia’s heart caused the doctor’s rotund gut to jiggle, before it exploded.

Her release didn’t come in spurts. A single flood gushed into Roshni’s womb and swelled her to a greater size. It ebbed to a gentle stream, yet it still shamed any human, before the intermission passed and the next tide crashed into her. Mia quivered throughout it, basking in the pleasure and heat of her seed as it bathed her cocks. Not a drop escaped the tight seal of Roshni’s whorish cervix.

Every drop was trapped. Every little speck was locked away. Every sperm had free reign. Fantasies of impregnating her surged once more, stronger than ever. Mia saw it clear as day, her friends cradling stomachs bigger than their bodies, while their tits leaked milk in steady streams and their hips flared to accommodate. All the while, they would fall to their knees and worship her cocks. What better food for their young than the father’s ultra-potent seed?

“It… it’s over?” Mia clenched and felt nothing escape her tumescent cocks. Her balls had shrunk to ‘normal’, spent of their egregious load. She took an experimental step and felt a huge weight tug her members down.

“Roshni? Hey, Roshni are you okay?”

“Never better,” came the hoarse reply.

“I’m, uh, gonna pull out. Okay?”

“Y-yeah, that’s probably for the best,” Roshni said and grunted as Mia slowly extracted herself.

“Oh god,” Mia said once she was free and looked down at her friend, or the petite form attached to her belly.

“I know,” Roshni giggled and stroked the landscape of her abdomen. It had pushed the table aside and almost knocked the tv over. As it was, the screen leaned precariously on her body. Mia moved it to safety while she inspected her doctor.

“I can’t believe this. I know I made you huge in the clinic, but… fuck, how haven’t you popped yet?”

“Who knows? I’ll figure it out,” Roshni said, though her voice was faint, “Hmm, I could just fall asleep here.”

“Hey, don’t pass out,” Mia said and shook her. The touch was too much. A gush of white spewed from Roshni’s crotch and crashed into the wall, a second soon followed.

“Ahh! So good! It’s so fucking thick, it’s like giving birth already!” Roshni cried, shivering in an encore to her previous orgasms.

“Oh shit,” Mia remembered what she’d said. Had the words stuck? Oh god, what if Roshni became obsessed with being bred? Another heavy splatter dictated her attention, “Come on, you can drain in the shower.”

“Yeah, okay,” Roshni said.

“Or…” Mia licked her lips as she came around to eye her friend’s gawking cunt. When the onslaught of cum paused, it oozed out in opaque rivulets. The act had left her throat dry and sore. She hadn’t drunk anything since she ate either.

Mia lowered herself and lifted Roshni off the ground. Cum squirted from the hole under such pressure, dousing Mia in her own fluid, before her lips covered it. The tide inundated her mouth. She swallowed, but it was difficult, like trying to glug jelly without chewing. When she did chew, her jizz clung to her teeth and gums. Viscous gulps were all she could manage and, despite her large mouth and gullet, the flow overcame her.

Semen streaked down her front and fell to the floor. A puddle formed as more escaped her. No matter how fast she swallowed, she couldn’t keep up. Mia eventually let it leak, choosing instead to savour her jizz. How could she describe it? A whirlwind seemed accurate, like a storm of flavours rampaged on her tongue, too many to say, each stronger than anything in recent memory. She could, however, say it was better than the pasta. Maybe next time she’d replace the sauce with her cum instead?

Mia pulled away with a gasp. Her lungs craved oxygen, and another part of her lusted for the rank aroma of sex. She stared at Roshni’s pussy. The hole had recovered slightly, though it seemed ruined forever. Even now, the vague shape of Mia’s cocks remained. She could slide a fist into such a cavern and have room for her head.

“I really ruined you,” Mia chuckled. No response. She checked and found that Roshni had passed out, “Come on, let’s go to bed.” Standing and walking was a strange combination with a belly stuffed with food and cum. Her stomach sloshed if she moved too much or suddenly, yet she couldn’t imagine more satisfaction outside of sex. Sleep reclaimed her, promising a new day tomorrow. Hopefully one where she’d stopped growing.