Filled with more astonishing facts than most people could ever have imagined, the ENCYCLOPEDIA OF UNUSUAL SEX PRACTICES presents a unique guide to human sexual expression, from the mildly kinky to the truly bizarre. From Acrophilia (being sexually aroused by heights) to Zelophilia (being aroused by jealousy) via such arcane pursuits as furtling, nasophilia and felching, the ENCYCLOPEDIA OF UNUSUAL SEX PRACTICES contains information sometimes repellent, sometimes stimulating - but always absolutely fascinating.