"Are you sure those are woman instincts?" asked Tom.
"What?" replied Joseph.
"There are women who like women. Their instincts don't tell them to be aroused by men, but they're still women, right?"
"Well, there are, they're lesbians, but my penis isn't a lesbian."
"Your penis gets aroused by women normally. If your penis becomes a woman, wouldn't it be a lesbian?"
"That's..." Joseph struggled for a phrase. "More ridiculous than anything that just happened. Hey, Dickie, er, Little Joseph, or whatever... tell me what sort of people arouse you."
"The same thing that always did," she said. "Cute girls and you."
"The ridiculous has just gotten worse," said Joseph.
"Think of it," said Tom. "What gets your penis pumped up? Hot chicks... and masturbation. Yourself. If your penis becomes a girl, then she's aroused by hot chicks and you. She wants you to hold her... because you used to when you were by yourself...