Ken woke up the next morning. His shoulder was still a little sore from the injection, and his mouth tasted like crap from whatever it was he'd drunk, but beyond that, everything seemed pretty normal.
He turned on the tv, watched some pointless crap, and then got up to go take a piss.
It was when he was at the toilet he noted things were not normal.
Ken was not hung, which was to say, he was average hung, about six inches on a good day, but now his dick looked more like seven inches. He was freaked out, but also kind of pleased, but also freaked out. After about ten minutes of looking at himself, convincing himself that there was nothing going on, not being convinced that nothing was going on and then freaking out some more, he just got a ruler to prove to himself that he'd not suddenly grown an inch overnight.
He was right. His penis had not suddenly grown an inch. It had grown an inch and a half. He was now seven and a half inches long.
"What the fuck?" he gasped, looking at his growing and impressive boner. He had gained 25% more in the hung department.
He called up the doctor for the study. "Uh, Doc? This is Ken. I'm freaking out."
"Oh?" asked the doctor. "Are there any unusual symptoms?"
"My dick's bigger."
"Really? How can you be certain?"
"Uh, because it is? Listen, it's usually six inches at best, and now it's like seven and a half."
"Would you mind making a chart of your daily changes and bringing it in with you when we see you next week?"
"Daily changes? What the fuck? You mean it's going to get BIGGER?"
"Well, this is a study of a few different therapies. These are only the initial trials. That's why this data is so important. So please, document everything you can. Photos would be useful as well."
The doctor hung up then and Ken was left looking at himself in the bathroom mirror.
Of course, he was a college student. He had to go to class. He finally got dressed and went, deciding not to just blow it off since it at least helped him ignore what was happening. But after dinner that evening, he came back and measured again: eight and a quarter. Holy fuck. In the day since he'd gotten the shot and taken the drink, he'd grown over a third longer.
He then realized that at least it was slowing down, that he hadn't grown as much during the day as he had over night.
He went to bed, finally masturbating because he wanted to so much and drifted off to sleep.
The next morning it was bigger. A lot bigger. It just tipped out at eleven, almost taking the full length of the ruler. By nightime, it was beyond that, hanging at twelve and three quarters. In two days, he'd doubled in length.
He didn't masturbate this time, only fell asleep to profoundly erotic dreams and woke up to find his penis was now sixteen and three quarters inches long. He was no longer freaking out, he was literally a freak!
It was then he notice that his testicles, which had formerly stayed the same, were now slightly larger. Over the course of the day, they continued to swell as the penis grew in length, topping nineteen inches by nighfall.
In the morning, he woke to found it just at twenty. Just. The growth was slowing down, though his balls were speeding up until at the end of the week the matched the size of the twenty one and three quarter inch monster that hung between his legs.
The doctor was very interested to inspect it, along with Ken's notes, asking many questions about the progress, finally saying, "Well, this is all very interesting, but obviously this is too high a dosage in your case. We're going to have to end your participation in the study. At least after next week."
"What?" gasped Ken.
The doctor shrugged. "We'll have to give you another injection and another draught so your data will remain usable--it's what all the other participants are receiving. Of course, none have responded as wildly to the serum either."
"I'm a freak!" Ken exploded. "You're not going to give me anything else!"
"I won't be able to pay you then," said the doctor. "And you're still bound by the non-disclosure aggreement."
"What?" said Ken.
"Well," said the doctor, "when this new drug comes to market, we can't just have those who participated in the trials coming out and making us look bad. You'll simply have to go about saying that's the way you always were." The doctor paused then added, "And any additional side effects, well, we'll be unable to treat and monitor those as well."
"You're crazy," said Ken, storming out.
He want back to his dorm room, anger, fear and panic swirling around him, and masturbated himself to sleep, his gigantic balls churning.