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1. yac
cognac; see yak
sippin' on a pint of yac
by joshua Feb 4, 2004 add a video
2. YAC
Yards After Catch, used in football a lot
Tom has no YAC, he must suck at breaking tackles!
3. YAC
a reply to YOLO, meaning 'you're a cunt'
"YOLO" "YAC
4. 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
5. 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!"
6. YAC
A UU acronym for the Youth Adult Comittee
Colin: Hey man, the word on the street is YAC is wack!
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