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1.
yac
cognac; see yak
sippin' on a pint of yac
by joshua February 04, 2004
 
2.
YAC
Yards After Catch, used in football a lot
Tom has no YAC, he must suck at breaking tackles!
by Zak221133 October 30, 2006
 
3.
YAC
a reply to YOLO, meaning 'you're a cunt'
"YOLO" "YAC
by Merriott June 26, 2012
 
4.
"You're a cock sucker"
Hey Mark, YACS! Why? Because you suck cock!
by Prian Brior March 09, 2004
 
5.
YAC
YAC Stands for Your Area Code. An acronym for the website YourAreaCode.com.

YourAreaCode connects You with the Hottest People, Places & Deals in Your Area.
Dude 1:Did you check out YAC to see what's going on tonight?
Dude 2: What's YAC
Dude 1: YourAreaCode.com
by YOURAREACODE.COM August 16, 2009
 
6.
YAC
An abbreviation of the phrase, "Ya Cunt!", which is used for a variety of reasons.

"YAC!" or "Ya Cunt!". Used as a casual greeting, an exclamation of disapproval and displeasure or farewell.
Instead of:
"Stop posting shit on masheads, Ya Cunt!"
...becomes....
"Stop posting shit on masheads, Yac!"

"Morning YAC!"

"Hi Alkifrolick!"
"YAC!"
by cunt "ya cunt" January 04, 2008
 
7.
YAC
A UU acronym for the Youth Adult Comittee
Colin: Hey man, the word on the street is YAC is wack!
by cecila April 25, 2007