These 101 math jokes are hilarious — you can count on it! Calling all math-letes and math geeks: Yes, the whole idea of math jokes might seem a little strange, but these are really two funny — in fact they are prime . Go figure! Why did I, V, and X keep wandering off? Because they're roman numerals! What happened when 8 lay down? He felt infinitely better! How did King Arthur reward the brave circle? He dubbed him Sir Cumference. People think math is too serious. They need to lighten up and be a little odd!