an extremely offensive odor, possibly what the inside of a johnny on the spot would smell like if you stuck your head down the bowl; an odor so horrific, you would stick ur head up your own ass just to escape it; a truly epic flatulation, one so disgusting it would choke a farm mule
Guy one: Dude, i went down on your sister and it smelled like a bucket of assholes!
Guy two: Dude, you gotta sniff it before you lick it!
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.