No Difference

 A young boy says to his father "Dad, our math teacher is asking to see you."

"What happened?" The father asks.

"Well, she asks me, 'how much is 7 * 9?' I answer '63' , then she asks, 'and 9 * 7?' so I asked 'what's the f****** difference?' "

"Indeed, what is the difference?" asks the father. ''Sure, I'll go.''

The next day, the boy comes home from school "Dad, have you gone by the school?" He asks.

"Not yet."

"Well when you do, come and see the gym teacher also."

"Why?" asks the father.

The boy explains, "Well we had a gym class today, and he asked me to raise my left arm, I did. Then my right arm, I also raised it. Then he asked me to lift my right leg, so I did. 'Now,' he says, 'lift your left leg,' so I asked 'What, am I suppose to stand on my butt!?'"

"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."

Surprised, the father asks "Why did you get expelled?"

"Well, they summoned me to the principal's office, and sitting there were the math teacher, the gym teacher, and the art teacher."

"The f*** was the art teacher doing there!?" asks the father.

"That's what I said" replied the boy.