Jon went over to Pete's house after school for his "extracurricular activities." Pete answered the door. "My parents are gone for the weekend, so we have the house to ourselves."
"What about your sister," Jon asked. Pete had a fifteen year old sister, who would now have a penis, thanks to Jon's wish.
"She won't mind," Pete responded. "As long as we don't make too much noise, she probably won't disturb us. Besides, we've both had partners over for sex and whatnot, so it's not like either of us are bothered by it."
"Your sister is sexually active," asked Jon. "She doesn't seem to take much notice of boys that I've seen."
"That's because she's a lesbian," said Pete. "She prefers cock over pussy."
"Whereas you like both equally," said Jon.
"Of course," said Pete, who wrapped his arm around Jon's waist. "And speaking of liking pussy, lets go up to my room and I can show you how boys love each other." Jon blushed and giggled as he was led upstairs.