In Mary Roach's book "Gulp: Adventures on the Alimentary Canal," a doctor named Robert Rosenbluth makes an insightful comment about the complexity of the human body. He highlights the anus as an example of remarkable engineering, emphasizing its multifunctionality and precision. By likening calling someone an "asshole" to praising their intelligence, he suggests that such an insult is a backhanded compliment.

This statement offers a humorous yet thought-provoking perspective on human anatomy, inviting readers to reconsider their language and the implications behind certain insults. Roach's exploration of the alimentary canal is not just scientific; it also unveils our perceptions and attitudes toward bodily functions, challenging societal norms with wit and insight.