"Well obviously, because you're a girl," Karyn said.
He was about to question her about that, because looking down at himself, it was very clear that he wasn't.
But then she continued, saying "I mean, where it counts."
Where it what? He immediately pulled down his gym shorts and got a shock. His cock and balls were gone! Pulling down his underwear, he was shocked further by the sight of a pussy. Oh man, he was a girl!
"Now, come on. We don't want to be late to the gym," Karyn said, finishing dressing and closing her locker. Already, a bunch of girls had already left the locker room.