The Evolutionary Value of Sluts

I was reading this Slate magazine science and technology column and came across a piece about large testes. In species where females have many mates, the males testes tend to be larger. The reason being that if you want your sperm to beat out the other guys' sperm, you need more of it, ergo the evolutionary need for big nuts.

An interesting note: The article mentions that chimps have much bigger balls than gorillas for the evolutionary reason noted above. That fascinated me (Gorillas tend to be significantly bigger). Not only are chimps many times stronger than humans, but they probably have bigger balls (at least when compared on scale). Throw a cape on those fuckers, they are superheros, man.