similar to bum-rushing, a bumper-rush is when you spot someone in the middle of the street, and accelerate towards em in a car, to see how close you can get without actually hitting em with your bumper. bumper-rush.
uno: hey dude, look at that fatass crossing the street. shes got no business there, shes takin her fat fucking time.
dude: lets bumper rush her
uno: i dunno man, shes like a quarter of a mile away
dude: thats more than enough room man; lets teach that bitch how to run