Something you say before your about to do or be involved in something that would appear in grand theft auto,
smash a window, jack somebody's
car, run people over, beat up a hooker, shoot up a strip club, drug deals, do drugs, jump out of a moving
car, steal a tank, shoot an RPG into a crowd of people, steal a helicopter, etc. And stuff.
Shaun: I'm gonna pull a GTA! - smashes
window of
car- “
Damn, I'm bleeding, Niko must be fuckin superman."