http://www.furaffinity.net/view/20292647/

A lesbian couple inherits a bunch of unlabeled potions from a deceased family member, who was an alchemist.

They decided to try some of them and while they knew the potions would change their lives forever, they didn't quite expect this result.
(One girl becoming a male dragon, the other... her/his dick.)

http://www.furaffinity.net/view/20292718/

A few days have passed since a lesbian couple drank potions that transformed them into this.
One woman's transformation was over quickly and she became a male dragon, but the other is taking some time becoming a dick, although she already embraced her new role wholeheartedly. Maybe the potion is designed this way so whoever drank it can enjoy the process?

Either way, they're trying to make most of the time they have left, even if may lead to some embarrassing situations.