At Last! A Comprehensive Guide to Sexual Intercourse! Sex is as old as human civilization—so why, after all these years, are the secrets of a rewarding sex life so elusive? Fortunately, The Sex Instruction Manual is here to answer all of your most pressing questions: Why do men fall asleep after achieving orgasm? What’s the G-spot and where can I find it? How can I introduce sex toys into my relationship? Are there really condoms designed for women? And what in the world is “doorknobbing”? You’ll find answers to all of these questions and more, courtesy of author and celebrated “sexpert” Felicia Zopol.