Jesse Bering - author, psychologist, academic - has what you might call an enquiring mind. He takes thye kind of questions about sex and sexuality which many of us have idly wondered about to not much avail, and he applies rigorous scientific analysis to them until he finds an actual answer. It may surprise you, but there is a serious evolutionary reason why the penis is shaped like that and why human testicles dangle is such an apparently vulnerable manner. If you would like to find out what human pubic hair has in common with a gorilla's fur, why girls are so cruel to each other or why you should never ask a gay man for directions, then this is the book for you. Based on Jesse Bering's columns for the Scientific American, this hilarious and endlessly fascinating book really does tell you everything you ever wanted to know about sex, but were afraid to ask.