A boy tells his father, "Dad, our math teacher is asking to see you."
The father asks, "What happened?"
"Well she asks me, 'how much is 7 * 9?' I answer '63' , then she asks, 'and 9 * 7?' so I ask 'what's the fucking difference?'"
"Indeed, what is the difference?" asks the father. ''Sure, I'll go.''
The next day, the boy comes home from school and asks, "Dad, have you gone by the school?"
"Not yet," the dad replies.
The boy says, "Well when you do, come and see the gym teacher also."
"Why?" asks the father.
The boy answers, "Well we had a gym class today, and he asked me to raise my left arm, so I did. Then my right arm, so I raised it. Then he asked me to lift my right leg, so I did. 'Now,' he says, 'lift your left leg,' so I answer 'What, am I suppose to stand on my cock!?'"
"Exactly," says the father. "Alright, I'll come."
The next day, the boy asks his father, "Did you go to the school?"
"No, not yet."
"Don't bother, I got expelled."
The father asks surprised, "Why did you get expelled?"
"They summoned me to the principal's office, and there were the math teacher, the gym teacher, and the art teacher."
"The fuck was the art teacher doing there?" the father asked.
"That's what I said" the boy replies.