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5.0

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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
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5 0

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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.
by a.g.c. June 23, 2007
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Verb: The act of driving past a speed trap, then looking in your rear view mirror to see if the police are chasing you.
Even when I am driving under the speed limit, I always do a 5-0 lookback until my heart rate is back under a 100 bpm.
by jharmless September 6, 2015
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the 5 0

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shit, its the 5 0
by God#28 April 8, 2004
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5.0

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In 1982, Ford reintroduced a high-performance Mustang GT which opened the door for an entirely new era of the muscle car. Wringing a then-respectable 157 hp from its "5.0" (actually 4.94 L, 302 in³) Windsor V8.

The "5.0" Mustangs, cars that gave birth to an entire aftermarket performance industry, continue to remain extremely popular today.

Pronounced "five point oh."
Vannilla Ice: "Rollin' in my 5.0 with the ragtop down so my hair can blow"
by Van Buren January 26, 2006
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Engine in 2011 and up mustang gt. Put a 2.3 TVS blower on it and its faster than Bill's ZL1.
Even with a built ls3, ported heads, blower, full exhaust, tune, and 75 shot, Bills ZL1 couldn't fend off non liberal's 2013 5.0 Coyote Mustang.
by Balzdp October 1, 2013
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A security guard. Derived from 5-0, slang term for a cop. Security guards carry about half the credibility and authority as a regular cop, hence the 2.5.

See also rent-a-cop, mall security.
"Bobby and I were throwing mustard off of the balcony, then some 2.5-0 come by and threatens to calls the cops. Lame"
by JakeStar November 3, 2005
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