"Uhh, no," said Jon. "Why would anyone think something like that?"
"It's really true," said Joseph. "Come on, Jon, half the school knows already. We can tell there's no bulge between your legs..."
"It's not as easy to see a bulge between the legs as some people think!" said Jon. "You're just seeing what you want to see--you look at me and say 'that's a fold in his pants' when if you saw the same thing on anyone else you'd say that there's a dick inside."
"Wait a minute," said Jeff. "Jon, you're denying it... but most guys wouldn't deny it like that. They'd just say it's ridiculous and leave. I wonder if you're trying to hide something."
Jon said "That really is ridiculous. The whole thing's just a joke. They accidentally printed my driver's license as 'female' and ever since then people say I've been hiding a vagina."
"So show me what's between your pants," said Jeff.
"No!"
"How can you prove you're a guy?"
"I don't need to prove I'm a guy! Do I sound like a girl?"
"Well, no."
As they walked away, Joseph talked to Jeff. "Look, it's really true. I'll prove it to you. Later we can...."