Little Johnny Got a F in Math

Little Johnny returns from school and says he got an F in arithmetic.

"Why?" asks the father.

"The teacher asked 'How much is 2x3?' I said '6'"

"But that's right!"

"Then she asked me 'How much is 3x2?'"

"What's the f&%#ing difference?" asks the father.

"That's what I said!

. /