Why do men have nipples? It turns out that many more people wanted to know the answer to that question than even the wildly optimistic Mark Leyner and Billy Goldberg, M.D., could have ever anticipated. After 47 weeks (and still holding!) on the New York Times bestseller list (eleven of those at number one) and more than 862,776 copies in print (we’ve counted), WHY DO MEN HAVE NIPPLES? continues to inspire guilty giggles all over the country. And yet while babbling on TV and drive-time radio and generally becoming addicted to the attention (they are now in a 12-step program), Mark and Billy came to realize that they’d barely scratched the surface. Thus was born WHY DO MEN FALL ASLEEP AFTER SEX?...