17 Sexy Science Facts To Liven Up Parties

5. Kim Jong-Il’s Penis Was 3ft 4in Long...

…according to the North Korean version of the Guinness Book of Records.

Whilst there's a possibility that someone in the North Korean records office was telling porkies to curry favour with dear leader, the moniker of Man With Absurdly Large Penis goes to Jonah Falcon, whose manhood is 13.5 inches (34 cm) when erect. Falcon has agreed to donate his penis to the Icelandic Phallological Museum (The Penis Museum) after his death.

4. Some People May Simply Be Wired To Want More Sex

Some people just seem hornier than others, and it might just be down to their brain.

Research at UCLA suggests that there is a link between the levels of involuntary brain activity when viewing erotic images and the number of sexual partners. In the study, the real difference between bains could be found when the participants were viewing only very mildly suggestive images. Those with higher levels of "sexual motivation" would become excited at the merest hint of sexytime, whereas those on the lower end of the spectrum were more chill about a bit of skin.