Top 5 Weird Sex Facts

By AV Flox on July 22nd, 2009

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Sex is a weird thing, but no book I’ve read has exposed more of its complexity than How Sex Works by evolutionary neurologist Sharon Maolem. Below are a handful of the nuttiest facts I learned reading the book:

1) Oral sex is not a human thing

Macaques, cheetahs, hyenas and goats also perform oral sex–and, in many cases, swallow!

2) Porn isn’t a human thing, either

When offered the opportunity to pass up their fruit juice in exchange for images of female monkey behinds, rhesus monkeys at Duke University gave their prized drinks right up.

3) Looking at threesome porn helps a man produce better quality sperm

Studies have found that men tend to create better sperm when competition is high. And nothing says high competition quite like the sight of a lady getting it from two guys at once.

4) The bigger the balls, the more promiscuous the female of your species

The more sexually active the female of a species, the bigger the balls will be in the male. Female chimpanzees are very promiscuous, so the male chimpanzee has testicles ten times the size of those of gorillas, who largely enjoy monogamous relationships with their partners. Humans fall between the two. Why bigger testicles? To produce more sperm and increase the odds of being the one who impregnates the female.

5) Bigger brains come at the expense of your balls

Scientists studying the correlation in size in some 300 species found that because large brains take a lot to develop and keep running, changes in brain size come at the expense of other costly tissues–that is, balls.

(Photo By: Gary M Stultz)