ONC

A popular Steam community group (One Nut Crew) that initiates their members through shooting one of their testicles with a revolver, typically one made from gold. Officially formed April 24, 2013 by founder Keenan "Vern" Evans, ONC frequents many games, usually online, such as Garry's Mod, RoboCraft, Minecraft, Unturned, ARMA 2/3, and many others. They can be found on the steam community website under OneNutCrew.

"I ran into those ONC guys a while back, I could tell they were doing initiations by the gun shots followed by a long, high pitched scream."

by FatherVern July 22, 2014

Once

Enough. Overtly so and inclusively.

Trying new things. Once.

by dajxd October 24, 2007

Onc

Instead of saying “ I swear” or “ong” ( On God). Crips gang members or crips affiliated say “onc” (On Crip).

When you swear on something

“Onc Ima beat that n*gga ass.”
“We instantly fell in love with each other on crip.”

by LAGangS December 6, 2018

ONC

Oral No Condom; what people use to get promotions.

Kim: "Hey, I got a promotion at work today!"
Andrew: "How did you get it?"
Kim: "ONC."
Andrew: "Oh, Oral No Condom, nice."

by VSU June 24, 2007

ONCES

fandom of best girl group TWICE. Forced to see all the hate other fandoms and ppl throw at them but despite that they always love TWICE, strongest fandom alive.

:Oh my gosh you’re all onces too?!!!
:yeah, so who’s your bias? Mine is Tzuyu because of her soft vocals, stunning dance, kind heart with purity, and mind-blowing visuals!!

by fredkoalas December 29, 2020

Once

The worst insult you can call someone. It is typically used when you are really really pissed off at someone.

Wow coach why are you such a fucking once all the time?

by Skipah123 April 1, 2009

Onc

It's like saying ong, or on god, but it's on cum.

Boy: Zamn u see that sexy boy over there
Boy: Onc he lookin mad cute

by zaddy_6s February 15, 2022