Confusing; something of unidentifiable qualites because the something in question is so bizzare, it is beyond the understanding of human language.
"I like being dropped head-first into some batshit Korean whooziwhatsit and trying to figure out why we're golfing within the burning heart of an active volcano, or to what extent a lacy fan constitutes a martial weapon."
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.