Little Johnny was not paying attention in class, so the teacher told him, "Do you know what happens when you don't pay attention?"
Little Johnny said, "No, what?"
She answered, "The principal's office."
Then little Johnny said, "Hey teach, do you know what it means when you have balls on your chin?"
The teacher answered, "No, what?"
"You have a d!ck in your mouth!"
Listen up, genius. The joke is all about Little Johnny turning the tables on the teacher with a crude comeback. The teacher asks him a question that leads to detention, and he hits back with a question that implies she's, uh, engaging in certain acts. It's funny because it's unexpected and inappropriate, and the setup makes you think it's gonna go one way, but it goes another. Based.
