The practice of riding in other friend's cars as a main source of transportation. Mostly practiced by 15-18 year olds who do not own cars, however occasionally practiced by adults. Name is taken from the more popular couchsurfing.
Dude, Andrew is always carsurfing like a motherfucker. He needs to get his own damn ride!
Riding on the outside of a car, usually at a normal driving speed speed much like trainsurfing. Usually done by a passenger, unlike when someone attempts to ghostride the whip.
It is said of the situation where a person has the bad luck to make contact with his testicles against an undefined surface or object, intentioned or not.
Given the nature of the word, it is more appropriate to design cases where the interaction is made with a moving object, for example, a ball.
Although it is extremely painful for the victim, it tends to be considerably funny to people who witness it.
Today in the baseball game the pitcher took a nutshot; the baseball hit him in the nuts.
Man, I just watched the funniest nutshot video ever.