Ancient Roman physicians told female patients they should sneeze as much as possible after intercourse to avoid pregnancy, while treatments for erectile dysfunction once included goat testicle transplants. In the animal world, the lake duck's spiral penis can sometimes equal its body length, necessary for overcoming the female's built-in defenses. Rachel Feltman's kaleidoscopic compendium of centuries-old erotica, sexual history, and trivia shows how much sex has changed—and how much it hasn't—while using science and humor to debunk myths, break down stigmas, and explore modern practices and taboos.

"Raucous…. There are numerous moments of laugh-out-loud amazement and eyebrow-raising surprise…. A deep dive for sex nerds and informative fun for everyone else."—Kirkus Reviews