Random Facts that will make you look smarter

Alright, no one likes know-it-all's... that's what they say. But it's always good to have a weird fact that may help to develop an interesting conversation. Here are some that may help. Hope you like them!
Btw, if you know a fact that hasn't been published in this facts book and you want to share with the other readers, messae me and I can post it (giving you credits, of course).