verb: the action of pulling a "bottlecap". adj. a person who has been bottlecapped, has been on the recieving end of a prank.
When one attempts to pick up money from the ground, only to find it has been super-glued down, by some hilarious prankster.
They just got bottlecapped!!! Bottlecapping has just occurred
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.