Simon stood there, looking at Curt, desperately trying to think. "Not...dumb," he said at last.
Curt looked up at him. "Well, you could certainly have fooled me. You overdosed on Jock Juice and now you're a big dumb jock."
"Not dumb," Simon said insistently. "Not dumb!" As he said it, his muscles shrank, continuing to deflate until he had an average muscular build, but still a huge eight in cock, soft.
Curt looked at him. "What the..."
Simon then started growing again, not wider, but taller and taller, again getting the lean greyhound physique but on a ridiculously huge scale until his head tapped the eight foot ceiling and he had to hunch over. Simon shook his head then, looking down at Curt. "What's happened to me?"
Curt looked up at him, craning his neck. "Well, you overdosed on Jock Juice, but it looks like something in you biochemistry is messing with the usual reaction. Normally, guys get big and stupid. Instead, you've got long and thin." Curt shrugged. "Looks like you're back to being the basketball center."