The titles on this listicle of the "10 Most Terrifying Guides to Sex" will probably not make it on to anybody's summer beach reading list, but how can you ignore a compilation that includes Make Your Own Sex Toys, How to be the Best Lover: A Guide for Teenage Boys, and the most cleverly titled, A Hand in the Bush: The Fine Art of Vaginal Fisting. For some reason, almost none of these books are available to peek at using Amazon's Search Inside feature, though Sex in the Golden Years is available on the Kindle. How curious.