Top Definition
The act of driving so fast that it causes the passenger sitting shotgun to subsequently lose all control of their bowels and/or jam their right foot into the floorboard as they instinctively mash the invisible passenger brake pedal
My friend's new car is so holyshitfast that he needed to get the passenger seat reupholstered after he took Dave for a ride
by afspeed6 July 15, 2008
6 Words related to holyshitfast

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