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.
Example:
"
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."