In his school years Calvin was a member of «Crips» gang dealing in drugs. After the school, Snoop was accepted in California Polytechnic State University but almost immediately got into the jail for cocaine possession. Later musician admitted in his interviews that he has been in prison multiple times during 1989-1991 years.
During the high school became interested in rap music and developed his famous nickname – «Snoop Doggy Dogg». Calvin`s mother called him «Snoopy» because; according to the musician himself, of his natural curiosity and unconcealed love to the famous cartoon dog.