a snitch, a person that informs authority of wrong doings
man, that nigga is a serpico.
by jae barrz June 01, 2006
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An incredible band from Edinburgh!

"The foundations of the band were laid in late 2002 but education slowed progress until late 2005. Vocalist Mikey then brought together the band, a five piece blend of youth and experience, through the wonders of the internet and Serpico was born as a live act that has begun to leave its mark on the UK gig circuit. Recent gigs have included highly praised support slots for multi-platinum acts such as Paradise Lost in London and a hometown support for US giants AFI, as well as tour supports for established Brit Rockers InMe and up-and-coming stars Lost Alone."
~ www.myspace.com/serpicoband
Fxck! Serpico were amazing last night!
by _Pixie October 02, 2008
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A hypothesized scenario, where a really shitty part of town becomes a dumping ground for honest, enlightened cops(ie Serpico), who all the crooked, racist cops regard as a pain the ass. The result of having a precinct full of good, upstanding cops is that the area does a total 180, becoming a near Utopia, where different races get along, there are no drugs(except a little weed, here and there), and everybody is happy and friendly.
"Isn't MLK Boulevard a bad area?"
"No, not lately. Since all the good cops have been sent there, it's starting to turn into a Serpico precinct."
by Alex Stockwell June 01, 2007
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popularized from Jay and Silent Bob Strike Back

You say when a cop is Strip Searching you in Public.

meaning "What the Fuck?" and referencing the Al Pacino Cop-Drama "Serpico".

Or when you are accused of something by someone.
A cop strip search's a man for alledged marijuana dealing.

Dealer: What the fuck, Serpico?

Then he spreads his ass cheecks and farts.

Friend 1: Tommy, did you jerk off in those socks again?

Tommy: WTF Serpico?
by Playhouse July 18, 2009
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