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really a motocross term but now is a word for cool kids only can be used to replace knock-knock in a joke or can be used as a response for anything
if ur name is not kelsey/kylie/momo/kristen/josh...u killed it
NAC NAC
whos there?
jp
jp who?
BONER!!!
Nac nac by Kelsey aka Hooker September 1, 2008
Related Words

titty nac 

A type of trickshot preformed in Call of Duty where the player pumps his/her shotgun or sniper rifle has it disappear and immediately after the players primary weapon appears ove their shoulder
I'm about to titty nac this nub scrub planting B bomb!
Term used in SCV to refer to any kind of smaller vape. Most of the time containing high amounts of nicotine.
similar to a juul but nobody uses a juul in scv.
Canyon student #1: hey dawg can I hit your nac.

Canyon student #2: yeah for sure i got chu.
nac by Father Josh December 4, 2019

nac swap 

The pressing of buttons to quickly swap your weapon in call of duty. Also used in trickshots
I just nac swapped to my L96A1 then billed the kid across the map
nac swap by Ishmeow? January 5, 2015

NAC Swap 

Something exclusive to call of duty and gmod, where you press Y at a certain point in an animation and it changes weapon instantly, it can be done with many different things and requires very fast timing to get them consistently. Unless it is a Moni NAC.
"Wow, did you see that tag NAC swap prodan hit on derail in Despize cams 47?"
"Yeah that was ok but I am better"-Cedar
NAC Swap by NACCER March 3, 2015
(Pejorative) Jail/prison acronym for "non affiliated caucasian". Used in reference to a caucasian who's not clicked up with the Peckerwoods.
That dude's a NAC. Don't hit us up about his debt. It's all you homey.
NAC by leminyelloblak December 9, 2012
More from Urban Dictionary

piddlefart

verb. To waste time doing nothing.
Instead of doing my homework, I decided to piddlefart around for two hours.
piddlefart by Rene April 25, 2005
Word of the Day on October 9, 2026
anyone who succeeds in disgracing/over indulging themselves in the throws of clubland
28 hours and 4 clubs later, gurning for england but still refusing to go home - a total wrongun!!
wrongun by bevvers March 21, 2007
Word of the Day on October 8, 2026

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
square grouper by slipsheet November 6, 2004
Word of the Day on October 7, 2026
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
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