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!

5.0 by James October 18, 2003

5.0 

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"

5.0 by Van Buren January 26, 2006

5.0 

One of the best engines ever made by Ford. Can be found in Mustangs and the like.

That 92 Mustang LX has a 5.0 in it.

5.0 by eightyfour February 28, 2004

5.0 

Police

Duck! 5.0!

5.0 by Xerobull November 29, 2002

5.0 

Average S.A.T. test score for the 'urban' inner-city kids (ie blacks) that started this dopey reference to police presense.

Yo, dat b da poliz fewl dey iz da 5.0.

5.0 by Patrick Woods October 15, 2006

5.0 

Nothin to do with the 70's show... stems from the fact that the majority of Police Departments...specifically LAPD used 5.0 litre patrol vehicles. Now more and more commonly used in East and South London.

Five Oh ... Feds ... Po Po

"Shit 5.0!! Lose the gear!"

Pronounced FIVE OH

5.0 by JC15SQN October 27, 2008

5.0 

small displacement high compression gm small blocks. either 305 or 307 cubic inches. anywhere from 150-180 horsepower.

"its a 5.0"
"oh mustangs are cool"
"no its a caprice you weenie."

5.0 by sdkfhskdjfhksjdfsdf October 6, 2006