A variation of gasbrake dippin' inspired by the MC Serch song The Gas Face.
You start gas brake dippin in your car (gas - brake - gas - brake, causing the front of the car to dip.) Then you hook your hands around the top of the horn and weave quickly around the road creating the gas face dip.
"Yo CT Ghostride this whip"
"NAH BOI I'M FEELIN TO GASFACE DIP"
"Yo P-Rex you want to go Gas-Face Dippin' to this cornerstore to buy some licorice n' shit?"