Karyn had been pissed off about the bizarre changes to her body. She had stormed out of the small examination room, looking for someone in charge, when she had come across what must have been Jon. It barely looked like Jon - she could see a resemblance around the eyes and the mouth, at least. Really, the person sitting on the table looked more like a porn star, with huge tits, a big ass, thick lips, long eyelashes, and dainty hands and feet. And, of course, the biggest schlong Karyn had ever seen lying between her legs like a soft salami.
Now, Karyn was barely aware of what was happening as she was absorbed by an unnatural lust. The porn star's cock was even bigger erect, but for some reason Karyn was holding it with both hands, trying desperately to ram it into the sopping wet cunt between her massive, muscled legs.
As Karyn pushed, the cock slowly started slipping inside her. After what felt like several minutes of mindless fucking, Karyn's awareness started to return. First she saw that the porn starlet was looking a little more like Jon. Then she noticed that the cock was getting smaller and smaller, closer to normal size. Next she realized that she could feel the familiar bouncing of breasts on her chest. Finally she became aware of people standing on either side of her and Jon, waiting expectantly.
Suddenly two burly interns grabbed her arms and gently but firmly pulled her off of Jon. She saw two more grabbing him and pulling him away from her. Karyn cried out, but quickly found herself in another small examining room where someone jammed a needle into her arm.
When Karyn's senses returned, she found herself lying in a comfortable bed, wearing a nightie, with a dark-haired woman in a white lab coat sitting on a chair beside her.
"Ah, I see you're awake. I'm happy to say that our attempt was successful, at least in your case. If you would like to examine yourself in the bathroom mirror, please be my guest."
Karyn got up and went to the bathroom. She stripped off the nightie and looked at her naked body. Her breasts were smaller than they had been, but they seemed much more comfortable to her. Her body looked a bit more muscular than she had remembered, but mostly it looked like her old self.
"I think I can live with it," she said with a smile. "What about Jon?"
The woman's small smile became slightly forced. "Well," she said, "I'm afraid his body is in flux right now, and it will be a few hours before we know how things turn out for him. But I'm afraid that it doesn't look good. His failure to follow instructions has put his body into a massive gender flux, and while we've given him the same stabilizer we gave you, the result is still a bit unclear. All we know right now is that both you and Jon will be immune to further treatments now, so the body you have is the one you will keep."