Definitions by Way Of The Gun fan

shut that cunt's mouth or I'll come over there and fuckstart her head 

An attempt to shut up a loud bitch who will only yell at you becuase she thinks she won't get hit/has some big boyfriend to protect her.
One of the first lines in Way Of The Gun, delivered by Ryan Phillippe to some loud-mouth cunt yelling at him from behind her boyfiend. He then punches her in the goddamn dome.

Raving Bitch: Hey dickless, get off the fucking car! Hey fucker, get your slippery fucking ass of the car! Listen to me, get off the fucking car with your fucking ass!
Parker: Shut that cunt's mouth or I'll come over there and fuckstart her head!

shut that cunt's mouth or I'll come over there and fuckstart her head by Way Of The Gun fan July 30, 2008