Most commonly used to refer to Police Officers/detectives or anyone associated with law enforcement. Origins date back to an early 1970’s television series titled “Hawaii Five O”. Detectives on this show were assigned to a special unit (Five O) and were savvy, aggressive and always apprehended the suspect. Much like the character “Daisy Duke” from the Dukes of Hazard television series whose short shorts spawned a once popular clothing trend with women very effeminate men, the term 5 0 too has transcended television to urban slang.
1. Say man. The block is hot so we goin to post up at Man Man’s cause 5 0 ain’t lettin a mother fucker make no mony here.
2. 5 0 came and took my baby daddy cause his P.O say he had weed in his pee and he on paper.
2. 5 0 came and took my baby daddy cause his P.O say he had weed in his pee and he on paper.
by a.g.c. June 23, 2007
Get the 5 0mug. 
by Brandon Fandel October 24, 2007
Get the the 5-0mug. 
by chris January 1, 2004
Get the 5-0mug. Term commonly used to quickly alert a house full of underage, intoxicated party goers that the cops have showed up and to exit the property via the back fence, or to let your crazed friend driving to know a cop is around and to slow it down.
by ImportDayz December 23, 2002
Get the 5-0mug. by matt March 11, 2004
Get the 5-0mug.