This article explores the origins and cultural significance of the slang term “5-0” for police officers. It covers the term’s origin in Hawaii, its evolution over time, and the cultural context of its popularity in the 1960s and 70s. The impact of popular culture on law enforcement language is also discussed, as well as the pros and cons of using slang terms for law enforcement. Debunking common myths about the origin of “5-0” is also covered.