Q: What do you get if you divide the circumference of a jack-o-lantern by its diameter?
A: Pumpkin pi.

Q: What do you get when you take a bovine and divide its circumference by its diameter?
A: Cow pi. 
Q: What do you get when you take green cheese and divide its circumference by its diameter?
A: Moon pi. 
Q:What do you get when you take a native Alaskan and divide its circumference by its diameter?
A: Eskimo pi. 
Q:What do you get when you take the sun and divide its circumference by its diameter?
A: Pi in the sky. 
Q: What do you get if you divide the circumference of a bowl of ice cream by its diameter?
A: Pi a'la mode.