Gregg lay there, idly scratching his chest as hair started to regrow. Going through puberty this fast was kind of sexy, and as with most things about puberty, was getting him hard. He reached out, grabbing his cock, and thought about Amy, wishing she was here, and then noticed something. His cock...he couldn't quite get his hand all the way around it. WTF?
He looked at it, realized that while it had been a whopper before, it was now a double whopper, both thicker and longer than it had been previously. Not that he exactly minded, but what was he going to tell Amy?
He thought about it, idly stroking himself, and decided to tell her that some of that herbal formula crap they kept trying to sell on the internet actually worked, and she was just going to have to get used to the bigger him. He rubbed his shoulders, feeling more hair there as well. Another side effect. But then he started stroking off idly, teasing himself, waiting for Amy until he drifted off to sleep.
He woke hid didn't know how long later with a truly raging case of wood, and forget trying to get one hand around it, he couldn't get both hands around it. And it was so long it was nearly poking him in the chin!
He'd nearly fallen off the bed while he slept, his legs were dangling on the floor, and he could hardly move, his muscles were so huge. He ran a hand across them, feeling hair absolutely everywhere. Panicking, he stood up, and immediately hit his head on the ceiling.
He was a hair-covered giant over eight feet tall now. This is what happened when you got a double dose of "big" mixed with puberty and whatever else the guy at the smoothie shop had added in.
Gregg looked at his mammoth member, and the rest of him, that was likewise mammoth. He needed to get this fixed.
But more than that, he really needed to bang Amy....