I believe that saying is a throw back to the 60's music scene and musicians for the most part.
Funny, Krebs in Dobie Gillis always said that when talking about people while playing bongos. Maybe omo likes Gilligan's Island too.
Maynard G. Krebs
TV sitcom character
Maynard Gwalter Krebs is the "beatnik" sidekick of the title character in the U.S. television sitcom The Many Loves of Dobie Gillis, which aired on CBS from 1959 to 1963. The Krebs character, portrayed by actor Bob Denver, begins the series as a beatnik, with a goatee, "hip" language, and a generally unkempt, bohemian appearance. He played the bongos and ocarina and sang scat. He also played bebop trumpet