math jokes

so I probibly just failed my math final, which isnt so bad because I did well enough on the previous two tests that I probibly won't fail the class reguardless.  still, I could use some cheering up, so post your best math jokes.  I'll start.

what do you get when you divide your parrot?
polygon.

Two scientists...
- Hi! My wife will have a baby!
- It's a boy or a girl
- True

....