A new study claims that women are more likely to cheat on their man if he has big balls. (Yep, you read that right.) Researchers from the University of Oslo studied primates — bonobos, specifically — and they found that a female is more likely to have other sexual relationships if their mate has large testicles.
And it doesn't stop with monkeys. "In one type of grasshopper, the testicles occupy half their body mass. The testicles are even larger in sea urchins. They spawn directly into the ocean. To increase the chance of fertilizing an egg, the sea urchin is a huge testicle with a little shell around it."
The testicles of humans are one and a half times larger than those of gorillas, the team said. They claim this shows that we are an unfaithful race by nature.
Personally, I'd like to know why they decided to study monkeys, bugs and sea urchins to determine human behavior, but I digress. The point is that you'd probably have to have big balls to interject yourself into someone else's relationship. (Bro code, guys?)
Still curious about other bizarre facts found from cheating studies? Here are 10 research-proven factoids that had us do a double-take: