type A. When you take a shit in a porta potty and you splash some blue water on your butt hole.
Type B. When you eat too many homeless peoples asses and their gangrene morphs into gang blue and your butt falls off and the Polynesian people roast your blue butt at a luau
A member of a clueless freshwater species known as the river kayaker who ventures out of his element and into the lineup thinking he or she can actually surf, with no concern for the hazard posed to real surfers by a huge uncontrollable boat and paddle. Obviously afraid of salt water, as indicated by presence of nose plug, helmet, and life vest.
"Hey, bra, what's up with that buttsurfer crowdin' the lineup? If he likes sitting on his ass so much, shouldn't he stay in his cubicle?"
"Dude, I know, he totally ran me over when he got caught inside on that big set!"
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.