House of Holes by Nicholson Baker
Visit the House of Holes, where the motto is PLEASURE FIRST, and discover a solution to every sexual problem, insight into every sexual intrigue, or play out your greatest sexual fantasy. Men can begin with a 'good, friendly penis scrub', take the magic sperm sniff test, or visit the Porndecahedron. Greedy women can visit the Hall of the Penises, shy women can order a partner with a 'voluntary head detachment', curious couples can investigate each other further with a 'cross crotchal interplasmic transfer'. But ladies, watch out for the Pearloiner, who might just steal from you what you cherish most ...