"I... I don't get it," said Eric. "It's weird. I can't find girls attractive. But guys..."
"Oh, please. Are you telling me you're gay? And guys give you a hardon?"
Eric thought. "No, not at all. That guy didn't give me a hardon, he..." The sensations from his pants were strange. "Something's wrong! It's gone!" He got up and started to walk over to the restroom again.
"Wait a minute," said Jason. "It's gone? What's gone? You mean liking girls is gone for you?"
"It... it is but that's not what I meant!"
"Well, what's gone? Tell me."
"I can't. This is crazy!" Eric ran off into the restroom, to where a toilet bowl was, and closed the stall door. He pulled his pants down and said "It really is gone!" No wonder that guy looked hot. I turned into a girl somehow. I'm a girl. Of course I'd like guys. What girl wouldn't?"
"A lesbian." replied Jason from outside the door. "You're right about sounding crazy. You're not making any sense!"
"It just disappeared and I'm a girl now. How can I possibly explain it any better?"