This comment over at BoingBoing made me laugh way more than it probably should:
It’s incredibly stupid, but my favorite pi joke is:
Pi r squared? No, Pi r round, cake r squared!
Mar
22
2011
22
2011
I’ll take Area of a Circle for 500 Alex
Feb
15
2010
15
2010
Math class humor
Yes, I know we’re several holidays past Halloween, and it’s dopey, but I still think this is funny:
Via Ovablastic