A shortened version of Tupac Shakur's (AKA 2Pac, Makaveli, The Don Kiluminati)name, given to him by those who seem to think they knew him as their best friend or something.
E.G:

Julius/Julie = Jules
Jason = Jase
Johnathan = Johnno
Stacey = Stace
Rebecca = Bec
Bump nines off that purple,
Sittin' on the block.
And when I'm loadin up them clips,
I listen to Pac.
~Wake the Dead - The Game;Doctor's Advocate
by Dogg Tagg November 30, 2006
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The abbreviation of 'People Are Cunts'. Expresses the general feeling that we are in most situations surrounded by selfish idiots. They couldn't care less about being helpful or even doing their job.
I spent all day playing phone tag with my insurance company. They have refused to pay for my stolen car and now they won't even explain why. PAC!
by God damn quesadillas! June 7, 2010
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Guys that are...

P-popular
A-attractive
C-cocky
S-sperm bags
He such a pacs...but hes sooooo hot!
by sjbk721 September 22, 2010
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As in 'Pacman' famous computer game character who was nothing more than a yellow circle with a slice cut out of it. Didn't rap at all therefore was never shot. But seemingly was addicted to some form of chemical drug, which gave him the feeling of being superior and seeing ghosts.
Dude! Look over there! That's Pac, man!
by Pixel January 14, 2005
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a sensational rapper better than most of the haters on this ass wiping web site FUCK urbandictionary
by FUCKUD March 29, 2005
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Political Action Committee

A PAC is a group dedicated to a certain political cause/party.
by Lewd February 28, 2005
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