■ Why do they never serve beer at a math party?
Because you can’t drink and derive. ■ Why did the student throw his watch out of the school window?
He wanted to see time fly.
■ What do you say when you are comforting a grammar nazi?
There, Their, They’re.
■ Why didn’t the skeleton go to the school dance?
He didn’t have any body to take.
■ Why did the cross-eyed teacher lose her job?
Because she couldn’t control her pupils?