The creeps who drive around in white vans (often with no windows or advertisements on the van) and sometimes with a ladder on it. They kidnap dogs and the occasional kid.
Man, I was on my way back from the market and I saw a pair of Dognappers!
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.