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40.
5 0
A heads up offered by a look out that an invidual not down with, adapted to acceptance of, or directly invovled with the groups illegal activity, such as the buying or selling of illegal drugs, is approaching. The invidual is a stranger and without right or reason to be there, even if the place is public, as it is gang territory.

5 0 call is offered without regard to whether the stranger is or is not a member of law enforcement; it is determined soley on trust i.e. whether that person is cool in the cultural sense, not the popular sense.
Example 1: A citizen walks through an area of illegal activity where they don't live or are not know.
The look out yells, "5 0 fool."
by Fred Flinkerstone July 10, 2008
5 14
 
1.
5-0
Slang for police officers and/or a warning that police are approaching. Derived from the television show Hawaii 5-0. Also see pig, and piglet.
Look out man, 5-0!
by Robert December 28, 2002
1595 372
 
2.
50
(Verb) Street Slang used by many to replace the word Police. Originated from an old Cop show called Hawaii Five-O. It aired from September 1968 to April 1980. The "Five-O" in the title then became a commonly used word for Police.
Oh crap, its Five-O
by Emejdoubleti May 29, 2004
801 158
 
3.
5-0
Another name for policemen
Oh No! 5-0! Get the fcuk out of ere! Run!
by Doug December 03, 2004
710 361
 
4.
5-0
slang for police, originated from the TV show "hawaii five-0" (apparently a show about cops)
"5-0 at the do, gotta go" -cradle to the grave
by chris January 01, 2004
478 255
 
5.
50
The Police.

50, pronounced "five oh", means the cops. It comes from the cop show Hawaii 5-0, and IT HAS JACK SHIT TO DO WITH MOTHERFUCKING CROWN VICTORIA'S, YOU STUPID MARK!!
Raise up fool, its the 50!
by Carl Johnson December 14, 2004
383 176
 
6.
5.0
Slang for police. Origin unclear, likely derived from the 1970's TV police drama "Hawaii 5-0" although it has been suggested to refer to the "5.0" emblems on Ford Mustang police cars used by many agencies in the late 1980's-1990's.
"Holy shit, 5-oh! 5-oh! Get those fighting cocks back in their cages!
by James October 18, 2003
248 63
 
7.
5 0
1. A cop. This term is used when the cop is coming after you. Avoid cops at all costs, they are out to get you for something you did or did not do.

2. A grind done on a skateboard when one truck is on the rail, and the other is raised above.
5 0, 5 0, scatter!

Pack your shit, we're going to Canada. That 5 0 just busted our crack house.

Shit, did you see that 5 0 grind he did down that rail?
by rickky November 08, 2005
222 40