the Irish for Shit. also, a person's cac's is their trousers or underwear in ireland.
that film was cac.
or, "Sean will u pull up your cacs, and put your mickey away u horny fecker"
by Emzolita March 31, 2007

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Top Definition
Cac = Cracker ass Cracker..a term mainly used on a messageboard website called "the coli"..normally used to describe a white person in a derogatory way
Poster 1: hey i think eminem is the best rapper ever

Poster 2: only a cac would say that shit
by blurp nugget December 25, 2016

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Cheating Ass Cunt
Your the cunt that sleeps with 10 other guys and does it again C.A.C
by Kappa2000 January 08, 2017

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Means shit
Cac your pants
by paul-k January 22, 2004

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The Common Access Card (CAC) is a United States Department of Defense smartcard issued as standard identification for active duty military personnel, selected reserve personnel, civilian employees, and eligible contractor personnel.

The CAC is used as a general identification card as well as for authentication to enable access to DoD computers, networks, and certain DoD facilities. It also serves as an identification card under the Geneva Conventions. The CAC enables encrypting and crytographically signing email, facilitating the use of PKI authentication tools, and establishes an authoritative process for the use of identity credentials.
Sir, you need to show your CAC to gain entry to the base.
by Severian919 January 24, 2007

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the one and only "cold activated can" (aka CAC) from the makers of the delicious Coors Light.
Nothing feels better on a hot summers day than having a CAC between your lips.

Hey, j-money, can you chill my CAC under that umbrella for a bit?

Sure, I'd love an ice cold CAC.
by heartmeows June 29, 2010

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Another spelling of cack or cak, meaning shit or something inferior..
'That new Good Charlotte song is cac!'
by Evil-Ernie May 29, 2003

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