A police officer that shoots first, and asks questions later. A common expression for gamers in Halo 3 playing the 'Cops & Robbers' gametype.
"Yo Murphy watch out for Spartan93, he's a damn mustache cop."
by Master Jumper April 23, 2008
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Any mustache worn by a douchey guy that is unaccompanied by a goatee, side-burns, beard, or other facial adornment. Typically the cop mustache is found on overly aggressive men with short hair and small penises. This facial hair is most easily witnessed just after speeding in a car or urinating in public. Synonyms include: mini soup strainer, night stache, and molester mustache. Alternate spelling: cop moustache.
1) Why the hell is mark sporting a cop mustache? Doesn't he know he looks like a complete asshole?
2) I decided that I only want to date insecure women who won't mind my tiny pecker so I shaved off my beard into a douchey cop mustache.
by Mustachioed Stud March 18, 2012
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