Everything you've ever wanted to know about sex, but were afraid to ask - from the author Why Does Popcorn Pop? and The Book of Totally Useless Information. Did you know the original Barbie doll was modelled after a German sex doll, which was modelled after a popular German sex cartoon character named Lilli, also known as the "Bimbo"? How about that a woman performing fellatio on a man might make her pregnancy more successful? Read this salacious and thoroughly entertaining compendium of sexual trivia and you will learn this and much more! Includes: Which ancient rulers had so many wives they needed sex secretaries? Why did European men openly display their genitals in public? Where in the world do men have erections all the time? Are men with larger testicles more promiscuous? Why do we mate face-to-face? How do porcupines make love? What men greet by shaking penises?