"But you've never gone around saying 'vagina, vagina' like a sex-ed textbook before," continued Karyn. "Everyone already knows you have one. That's why even though the rest of you is boyish, you still use the girl's bathroom."
"Sure," said Jon. "I suppose I would now that I'm changed. But come on. Have you ever in your entire life heard of anyone else who's a guy except they have a vagina?"
"No," said Karyn. "But there has to be a first time for everything. Just like your first period."
"Don't remind me," said Jon. "I've heard about those."
"Jon, you're not making any sense," said Karyn.
"I'm making perfect sense," said Jon.
"No you're not. Why don't you stop this 'I'm a guy' stuff? It's getting you confused."
"But I am a guy, except for my vagina."
"Which means some of you is a girl."
Jon saw a familiar expression on Karyn's face. Karyn had some idea that it would probably be impossible to get her away from... "Karyn? You aren't, er, planning something, are you?"
"Well, just a little," said Karyn.
"I see," said Jon.
"I was just thinking. You really are a girl, no matter what you look like. I want to arrange for you to be like a regular girl and...."