Some of these 311 things include: Guys who wear sunglasses indoors, Guys who wear speedos, Guys who wear walking shoes with knee socks, Guys with mullets, Guys who order girly drinks, Guys who play air guitar. The book is broken down into three parts: what not to wear, what not to say, and what not to do. It is easy to laugh at those details because they are so visible. Most people can picture exactly the kind of guy being described. That is part of why the list lands so well.