Eric hopped off the exam table and stumbled forward not used to the added weight hanging from his crotch. It seemed to mess up his center of gravity. The doctor had left him, and he tried to get dressed. His shirt still fit, but there was no way he could zip up his pants with that monster hanging out of it. It was too big to use now. No one could take it. He sat down to put his head in his hands and was hit the face with a wet Nerf ball - no wait it was his own giant glans still wet with precum.
The door opened and a young man in a white lab coat entered. He was wearing baggy khakis and a tight white t-shirt underneath. He was carrying a large beaker and wearing rubber gloves.
"Mind if I take my coat off, they keep it pretty warm in here, since you can't wear clothes, and they don't want you covering up with a blanket."
"Sure whatever, uh, what's with the beaker?"
"You and I are going to get to know each other pretty well of the next few months. I'm Dr. Kevin - a med student. Anyway, there are 10 of us who'll be checking you daily - actually, I should say every 15 minutes. So it may get a bit tedious for you, or you may enjoy it."
"Enjoy what? Being measured, poked and prodded? Look at me, I'm a freak. Who's going to want or even be able to take this big a cock inside them?"
"Well, that's part of the study. Didn't they explain it to you?"
"No, they just gave me an injection."
"Ah, well, maybe I shouldn't say any more - your reactions may be part of the study. But as for the enjoyment, I have to give you a hand joband fill this beaker. We'll be milking you every 15 minutes to start. You may have some dry loads, but -"
"Wait, you're going to jack me off 4 times an hour all day?"
"Oh, you'll learn to sleep through it. Just like a wet dream, except not wet, since we collect all your semen."
"You're kidding right?"
"Oh, no we've been doing it on the other test subjects for the past few days. Now let's hurry up and get you milked, I have to get across the hall and milk subject number one."
"Uh, subject number one? What number subject am I?"
He glanced at his clipboard, "Sorry, Eric, I'm treating you like a lab rat, and not the handsome hunk you are. I bet you're really popular with the ladies."
"I was," he said sullenly.
Hands began to gently work his erection.