Going to the barbershop and getting a bag full of hair and waiting until your friend, who is a notoriously frequent masturbater, passes out and glueing the hair onto his palms with Super Glue
Man, my girlfriend got pregnant just sitting on Dave's couch.I took 4 showers and still feel like I've been rummaging in the dumpster behind a porn theater. Next time we go drinking I'm going to give him the old Hair Em Scare Em.
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.