And utterly hilarious. Oh good Lord, Mary Roach is so funny. Please do yourself a favor and read the footnotes while you read! She jokes throughout, effortlessly, while clearly summarizing many contemporary and historical efforts to understand human sexual response. Roach is consistently engaging and often places her own antics in the search for knowledge squarely within the text. Did I mention it's funny? If you like sex, science, history, humor, and/or all of the above, definitely pick this up. If you're uncomfortable with forthright discussion of sex, innuendo, talk about orgasmicity... well, why are you even considering this book?!