I can’t decide if that is a very good or a very bad title. Nonetheless the book itself is excellent. The author, Rose George, stresses:
To be uninterested in the public toilet is to be uninterested in life.
You also learn that toilets may have saved more lives than any other human invention, public toilets are disappearing in London and many other cities, and that many Kenyans have "helicopter toilets," which start with the use of a plastic bag. My favorite moment in the book is this:
After five hours of my questions, Mr. Tanaka shyly offers two of his own: "Why don’t English people want high-function toilet? Why is Japan so unique?"
Definitely recommended and yes it is a serious book too.