While it might not truly contain *everything* you always wanted to know about sex, this book certainly comes closer than just about any other similar offering on the market. Without ever being sensationalistic, Reuben manages to give a thorough, well researched question and answer guide to most things sexual, from the vanilla to what much of society today might claim is taboo. The frank way in which he answers questions, and the subtle humour that infuses the book does much to keep the tone at a level where the book can be recommended to a wide variety of readers- gay, straight, from the teens to seniority, single, coupled, celibate, promiscuous and everywhere in between all of those extremes. A good guide to have around the house when you want a quick answer and google isn't handy (or likely to provide 'academic' explanations).

One caveat, though, which another reviewer already mentioned: do make sure you're getting the most up to date version of this book. A lot has changed since the sixties, and decades old information, while amusing, might not be the most reliable.