This is a Halo term, meaning a wharthog lacking a turret, these are usually found in campaign, or done by a glitch. The only purpose of having one is the fact that noobs heavily avoid this, as if their life depended on it.
PRO 1: "Hey, lets use tat's mods like consumer whores to get a Neutered warthog on our map so no people cheat."
NOOB: "HELL NO I need mah gauss cuz the game is g@y withoutz it because they is MLGEEEEEEEEEEE."
PRO: "Why did I add you?"
NOOB: "MLGEEEEEEEEE!@"