The “men’s only” is just a ploy to sell the book and make it stand out from other titles in this genre. It’s a book of trivia that could be considered gross or obscene. It contains facts about weird sexual acts, cannibalism and death. Some things were so interesting I had to look up more information. The only major problem with the book is the authors list of references. Most of the references seem to come from Wikipedia. As a librarian we constantly advise you to know your source, make sure it’s credible and back it up. While there is nothing wrong with Wikipedia I would prefer solid researched sources.