Bonk: The Curious Coupling of Science and Sex - Mary Roach
This is Mary Roach at her most curious and funniest. BUT, the e-book lacks the extensive footnotes found on nearly every page of the printed book. Mary's footnotes are full of relevant information and hilarious observations. Example page 195: "... Meston called the questionnaire the Washington Examination of Expected Negative Identity Post-Peyronie's: the WEENIE PP."
Without the footnotes you're missing some valuable background information and only getting half of her sense of humor.