http://www.furaffinity.net/view/13896843/

Slowly but surely, Emma came to. She tried to remember what happened. There was an accident and she was separated from her team. Her helmet was gone, but she wasn't choking. The air was thankfully safe to breathe. Emma slowly sat up and took a look at her surroundings.

A multitude of spider-like animals roamed about the field before her. Just as she rose from her position, one of the creatures nearby sensed her. She froze, thinking perhaps it was her sudden movements that startled the creature. A shiver went down Emma's back when the spindly legged creature made for her. It stood at her feet for a brief moment, almost assessing her. The way that she made herself tepid in order to not provoke a further response did not prepare her when the creature suddenly leaped at her!

It slithered beneath her space suit and down her body. She tried to grab at anything to pull the squirrelly alien out and grabbed its tail! Emma pulled as hard as she could and only felt the tail popping free from the alien's body. Before she could react, she felt it settle over her groin, firing a bundle of tentacles into her.

They quickly pushed past her cervix and filled up her uterus. She gritted as she felt dozens of finger sized tentacles slithering inside her core, as if they were searching for something. A sharp gasp escaped her as some of the worm-like appendages slid deep into her fallopian tubes. The tentacles prodded and squeezed her ovaries before piercing into them. Emma let out a cry from the sharp pain, although she only had a few seconds to linger on that thought before something else caught her attention.

She felt a broad suctioning sensation across her vulva as something attached to her. It felt warm and moist at first. Then a subtle but growing pleasurable feeling began to take her mind off of any pain she had felt before. The crotch of her pants began to grow unbearably tight. The whole time, her head was lolled back from the pain and now she decided to look down. A massive bulge had made itself apparent and the seams of her pants began to tear. Emma looked on anxiously as the monster growing between her legs freed itself from its fabric prison.

It looked at least a foot long and was as wide as her arm! Black alien flesh dominated most of the shaft with heavy ribbing. Her eyes widened as she saw black veins spider webbing into her inner thighs and mons. In contrast to the shaft, her broad glans, thick underside, and hefty balls were pink. A warm and tingling sensation started from inside her uterus as well as subtle movement from her testes. She began breathing hard as her cock swelled and throbbed only for a few seconds. Emma grabbed her chest plate and gritted as her new grown dick erupted. A gout of thick white semen soared through the air as first new organ's orgasm struck her. Adding to the maddening pleasure was the distinct sensation of multiple solid things being forcefully ejaculated along with her cum. She came for ten seconds before she began to subside. Looking down at the work of her still hard cock, Emma let out a final spurt and clearly saw not just a jet of cum but a thick white worm eject out from her tip. Looking down at her sperm puddles, she saw a multitude of these worms, writhing about in all manner of life. Emma looked with equal parts fascination and horror at her unintended work before her wrist comms buzzed to life. Her teammates were nearby...

http://www.furaffinity.net/view/14975050/

Jin and Aubrey were lucky to find Emma again after they had separated. They helped Emma into the back of their transport and made their way back to home base. Both of them thought of the suggestively shaped alien organism that had attached itself to the Executive Officer.

Once they returned to the hangar, Aubrey left her partner briefly to inform Dr. Alexis Scott that they had returned with Emma and the specimen intact. Afterwards, she came back to help Jin escort Emma to the medical bay. However, that didn't happen.

As Aubrey approached the hangar, she could hear the loud cries and moans of Jin. She quickly ran through the door just in time to see Emma and Jin cry in unison as they both orgasmed. Jin's legs were wrapped around Emma's hips, locking her in place as their shared climax kept rolling. Aubrey watched with equal parts arousal and horror as her partner's belly swelled to size. Eventually, Jin's legs slid around Emma's waist, allowing the parasitized woman to stand. A loud gush and splash was heard as cum and small but visible worm-like organisms flowed out of Jin.

Emma quickly turned around and saw Aubrey. The parasite's tendrils were clearly burrowed deep into Emma's body. Aubrey only made one step back before Emma was on her. She couldn't resist the Executive Officer as her lips locked over hers. Emma quickly found the brunette's front zipper and pried her open, mashing their warm and soft breasts together. Breaking off the kiss, Emma pushed Aubrey down and she couldn't help but go with the flow. Soon she was mere inches away from Emma's parasite, a foot long rod of pulsating alien flesh. Emma positioned her head at Aubrey's lips before sliding in. Aubrey gurgled and choked, but Emma didn't care, as the parasite already began pumping its load deep into her throat...

http://www.furaffinity.net/view/14057085/

Ever since she got that new alien cock, Emma has been very popular in the Company's laboratories. Here, Dr. Alexis Scott has taken a particular interest to Emma's condition and is extracting samples for further research.

http://www.furaffinity.net/view/14349383/

Poor Emma. She was exhausted from all of the cock milking that Alexis needed for sampling. While unhooking the milker from Emma, the two ladies make an astounding discovery. It seems that when the host is unable to act on the parasite's breeding prerogative, it can take matters into its own hands! Rearing up, the parasite ejaculates heavily at Alexis. The lady scientist tried to protect herself, but the attack caught her off guard and she caught a mouthful of worm infested cum! The worms quickly slither their way to the back of her mouth, before sliding down her throat. As Alexis brushed off the cum covered worms off of her face and clothes, she worried what the parasites will do now that they're inside her...

http://www.furaffinity.net/view/14512947/

In a matter of minutes, Alexis was starting to heat up. Her face felt warm to the touch and she could feel her heartbeat through her needy pussy. Looking over at Emma, she seemed hypnotized by the subject's throbbing member. She thought she could hear blood pulsing through the engorged organ. She walked over and stripped off her skirt and hiked up her sweater, revealing her cute breasts. Alexis tore up her pantyhose near her groin and then looked into Emma's eyes.

"I... I need you."

"Ah... That's good then doctor. Um, could you help me out?"

Emma tugged on her restraint and Alexis complied. With her right hand free, Emma was going to move to release her left but she was halted as Alexis's slid easily over her parasite. She couldn't help but wrap her hand around the doctor's waist as she began to move up and down.

Having only felt the parasite ejaculation upon its attachment and being forces to cum into the nearby tanks that must be holding several gallons of worm infested semen, feeling Alexis's warm and wet cunt was amazing. And thanks to all the recent ejaculating that she'd been doing, Emma already felt like she was on the brink.

Meanwhile, Alexis was admiring Emma's body. She had a firm body from being a planetary explorer, but she also had these pillowy looking breasts! The young doctor moved her hand over to one of Emma's tits and gave it a firm squeeze and it was as soft and delightfully squishy as she thought. Just like Elle's tits, she said to herself. Then Emma's hand tightened around the small of her back.

"Ah... I'm cumming!"

"I want it in me, Emma!"

With one last stroke, Emma's tip stretched past Alexis's cervix and was embedded inside her womb. Normally this would be painful but it was only pleasure. Emma's testes, which was her cum and sperm factories as well as the spawning pools for her worms, pumped its parasitic payload deep into Alexis's core. Gouts of semen filled her uterus, followed by waves of slithering worms, whose movements drove Emma and Alexis to greater heights of pleasure.

This was the parasite performing its function, as it motivates Emma with such pleasure to find more hosts to infect and meanwhile, blinding Alexis to such immense pleasure that she would do little to nothing to halt the infection from taking root inside her. To the two women, it was the most euphoric experience they've ever experienced...

http://www.furaffinity.net/view/14945829/

Even after swelling up her womb full of cum and worms, Alexis still wanted more of Emma's cock and she was more than willing to oblige. Positioning her parasite at her lips, Emma entered slowly into Alexis's yielding mouth. Upon reaching the back of her throat, the parasite flexed and slid into her esophagus, despite the awkward angle. Alexis's gag reflex kicked in and she grabbed onto Emma's leg. The unintentional flexing of her throat pushed Emma to the edge. Her heavy balls began throbbing as it pumped more semen and worms up her twitching cock and down into Alexis's stomach. The scientist moaned as she felt the hot and thick fluid fill her belly, as well as the now arousing sensation of the worms writhing about the pooling semen.

This was a horrible breach of laboratory procedures, but damn if it didn't feel so fucking good.

http://www.furaffinity.net/view/15990023/

Alexis Scott was added to the crew at the last minute by the Company. It seemed unusual, but no one looked too deep into the matter. She seems a bit distant and cold, which started a rumor that she might even be an android. But Elle Goodwin, the redheaded pilot, knows better. She was able to get the taciturn science officer to warm up to her and soon, they warmed each others beds every so often.

Elle got a message from Alexis to meet in her private quarters at the end of the day. She had heard about an incident happening with Executive Officer Jennings on the surface of the planet, but everyone was tight lipped about it other than stating that something happened.

When she entered the room during the late hours, Alexis was sitting at the bed, waiting for her. Elle didn't even bother to take her boots off as she leaped onto Alexis. She pushed up Alexis's sweater while the doctor unzipped her flight suit. Neither wore any underwear beneath, just for each other's easy access. Alexis told her to put on an exam glove before continuing further. Something kinky maybe, the pilot thought to herself. She moaned softly into Alexis's ear as she felt her lover's fingers work themselves inside her. The Company woman reached down and undid the front of her spandex and let out a low moan. Elle heard a thick slick near Alexis's groin and looked down. To her shock, a deep pink cock sprouted from Alexis's clit!

Elle felt Alexis move in and whisper,
"Go ahead. Take it."

Seeing the encouraging smirk on her face, Elle reached down and grasped the new appendage with her gloved hand. Even through the clear latex, she felt the cock's warmth in her hand as it pulsated in time with Alexis's heartbeats. Sliding down a few inches below, Elle felt the twin orbs nestled at the base of the organ. They felt tender compared to the shaft's hardness. She gently squeezed one of them, causing Alexis to squirm a bit as she said,

"Ah... I think those might be the testes but I'm not totally sure yet."

And not even an inch below the base was Alexis's vagina. Still intact and wet from all this.

Alexis reassured her,
"Your favorite part is still there, with a little something extra on top."

She chuckled and slid her fingers across Alexis's balls and took hold of the shaft to give it a few pumps.

"It's been a while since I've taken a cock. And they're nothing like this..." said the fiery haired woman before she was interrupted by strange dick she held. She could have sworn she felt the organ squirm in her hand a bit like an animal before spurting some small ropes of cum and something else. In between the small ejaculations, a few tiny white worms slithered out from the urethra and raised their heads into the air like snakes.

Noting her lover's shocked face, Alexis said,
"These sperm shaped worms seem to have a direct link to the cock in your hands. I was accidentally exposed to them while treating Emma. Maybe you'd like to help me discover a direct correlation?"

It looked so gross at first but the more she looked at the thick cum dribbling down her lover's shaft and the questing little worms just poking out from the tip, the idea seemed to become more appealing. And with a little help from Alexis's fingers, she was coaxed into a breathless yes.

http://www.furaffinity.net/view/16641554/

The last time Elle had a dick was when she hooked up with another pilot at the last space station. But now, she has this strange alien cock attached to this icy beauty whose body has been privy to her. She had some misgivings about Alexis's piece, but since it's on her, she was willing to take the dive.

Positioning her wet slit over Alexis, Elle eased herself onto her lover. She moaned as the particularly warm organ spread her inner walls. Alexis joined in as she experienced the sensation of her own cock inside another person for the first time. The raven haired doctor looked up and asked,

"You ok, Elle?"

The busty pilot nodded and replied,
"Never been better, lover."

Elle began first as she started to ride Alexis. She in turn started to meet Elle with her own thrusts. Once they found a rhythm, the two began appreciating each others bodies as they freely and frequently kissed and groped one another. Their light moans filled the otherwise silent quarters, accented by the wet slapping of flesh. This went on for about seven minutes until Alexis felt something change.

Her cock began to swell and throb in preparation. A sense of pleasure began radiating from her member as well as deep in her pelvis. She looked up and said frantically,
"Elle! I'm going to cum!"

The pilot grabbed onto Alexis's shoulder for support and said,
"Give it to me!"

And with one last thrust, Alexis hilted herself into Elle and they both cried out as Alexis began ejaculating inside her. The tip of the parasite erupted thick ropes of worm laden semen, although they weren't as numerous as is frequent with Emma's own potent specimen. But Alexis's organ made a good showing, as her ejaculation lasted ten seconds before it began to subside.

During those ten seconds, Elle couldn't believe the amount of cum that was being pumped into her. She never felt like this with any man or toy before. Looking down, Elle saw that her womb had been visibly swollen. She lay her hand on it and was amazed that it was incredibly warm to the touch. And if she could concentrate, she swore that she could feel the worms swimming inside the veritable pool of genetic material that Alexis just pumped inside her. The only thing she was able to say was,
"That was... amazing..."

http://www.furaffinity.net/view/17268428/

After being filled with Alexis's cum, it didn't take long for Elle's own parasite cock to emerge. The redhead pilot was still in disbelief at the throbbing alien organ now rooted between her legs and Alexis took the initiative. Remembering how flexible Emma's parasite was, she grabbed both of their dicks and slid them under their balls and into each other's pussies. It would have been a painful arrangement for normal penises, but theirs were anything but.

As their hips thrust against one another, Alexis took her lover's wrist and held it back while she attacked with a deep tongue kiss. Even though she was also giving, Elle was very much the recipient of Alexis's affections. Soon they both felt their parasites readying for ejaculation as their shafts began to swell and the worms in their balls stirring. Elle gasped as she felt the science officer's hand reach down to grab her ass. Her eyes rolled back and she moaned into Alexis's mouth as they began to cum inside each other.

Alien semen and spermatophores flooded through their cocks, pleasuring their owners with the passing of their girthy presence before being directly ejaculated into the womb. Feeling their womanly cores being swollen with hot semen and wildly squirming worms only added to their feeling of ecstasy. The worms lost no time and began swimming towards their target, the ovaries. With nothing standing in their way, the spermatophores quickly found the female organ and began pushing against it until they passed into it via osmosis. The worms broke down inside and released an alien type of wolbachia. It began altering the eggs, making it compatible to the sperm that accompanied the semen and worms. Within that moment, a modified ovum would be released, which would be easily pillaged and fertilized by the alien sperm.

But the lovers paid no mind to the consequences. Only that their rutting was the most pleasurable and hottest thing they've ever done with each other.