A young boy says to his father “Dad, our math teacher is asking to see you.”
“What happened?” The father asks.
“Well, she asked me, ‘how much is 7 * 9?’ I answered ’63’ , then she asked, ‘and 9 * 7?’ So I asked ‘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 says, “Dad, have you gone by the school?”
“Not yet.”
“Well when you do, come and see the gym teacher also.”
“Why?” asks the father.