To cum in one’s ass, then suck it out and give it to your partner through a kiss.
OMG Becky, last night JJ gave me a Krispy Crème. That’s when he nutz in your ass and eats you out and when he is done sucking out all of his cum he gives it to you with a kiss.
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.