Knock, knock.
Who’s there?
Boo.
Boo who?
You don’t have to cry about it!
What cartoon character do you use to move your cursor to get to websites?
Mickey Mouse!
What did the right triangle say to the obtuse triangle?
Why aren’t you acute triangle?
What do ghosts read?
Booooooooooooooooooooooooooks!
What do you call an X that just got out of the bathtub?
A kleenex!
What happened to the plant sitting on the windowsill of the math classroom?
It grew square roots!
