Rose has a lab

Fred woke up with a splitting headache... but that was the least of his problems...

He was naked on some kind of a clinic exam bed in a tiled room. His arms were out at a 90 degree angle to his body and his wrists restrained. Fred's legs were splayed wide and his ankles were elevated in stirrups and also tied up. It seemed like the classic female exam postion, except the monitors on the ceiling painted a different picture.

Cameras aimed down from next to the monitors showed his naked form, returned to its original flabby male form.

Craning his neck, he could see a woman in a lab coat typing on a keyboard. It was Rose, the woman from the gym, albeit in slighlty modified form. In profile he could see her... a shredded lab coat rose and fell from her heaving melon sized chest. Bodybuilder biceps and forearms squeezed against the distressed sleeves of a coat several sizes too small. She noticed him awake. As she turned to face him, he noticed the foot long flaccid cock dangling beneath her bugling abs.

"Oh, I see we're awake now... ummm.. Fred. At least that's what the ID in your gym bag. You're lucky we were the last two in the locker room, or there might have been a scene."

"Where am I and who are you? And why am I tied up?"

Pausing, Fred continued "I feel like I've drank too much coffee and can't close my eyes... what did you do to me?"

"One thing at a time, love. My name is Rose Hardening, Dr. Hardening, or just Rose is fine. I work for TransSci... or I did. I've done a lot of genetic gender modification studies that haven't exactly panned out. Until the virus landed. I was hopeful I'd get to study somebody. Then the infected were eliminated, so to speak. Some of the bodies taken to my old company to be studied... just about the time as I was fired for my own overzealous experiments. By then I had assembled my own lab..."

Rose paused, and typed a few keys. Footage of labia in all shapes and sizes started playing on one monitor over Fred... the second showed breasts in a constant rotation, while the third showed Fred's restrained body.

"And then I saw you in the gym and knew there was a suvivor. I had to risk seducing you in the shower. No female form had ever carried so much muscle, and your clit was poking bulging from your shorts. Luckily this monster knocked you out cold after you infected me."

Rose reached down and lifted her cock... the veins on her arm and cock bulged, the strain evident. It was the diameter of a two liter bottle, soft. She began to stroke it.

"I saw your **** form is quite a bit... different, shall we say... from who you were at the gym. I've drawn your blood and watched DNA morph before my eyes, so it confirmed to me that you've got a mutation of the virus that would be very marketable... changing to whatever gender and body type. Amazing!"

"But...... but.... why restrain me... and the videos?" Fred mumbled as he struggled against the cuffs.

"Well, simply... I have a problem studying your strain. Whatever you infected me with has further mutated.... I'm either as you see now, or something akin to a Futa "Hulk" when I get aroused. I can't control it. My own DNA pulses btween these two states. It is amazingly pleasureable... but... I lose all sense of my intelligence and self control. I can barely think, let alone study your DNA. I've managed to masturbate myself "back" several times, but it is very temporary... that's where you come in... I need to continuously fuck to stay sane, so I can study.... "

"Wait... What... how? No... I..."

"Shhh... you've got an amphetamine in your system... just focus on the videos and this will feel really good... when this is all over you can go back to your shapeshifting ways..."

Fred alternated looking at the monitors and Rose... he saw and felt his cock shrinking and a vaginal canal forming...

Rose continued to stroke her cock... in an explosive morph, she grew to eight feet in height and every muscle on her body grew in proportion. Her already monstrous cock sprung to its full effect, four feet in length. The tip nestled now against Fred's taint.

The sight of Rose's transformation broke Fred's concentration on the monitors... he felt a muscle in his arm swell.