is to tell someone or something that they are a bitch when you really mean that they are a biiiitch (higher pitch on the I's and also you say it not as if it were a actual bitch)
your dog is a pure breed bitch, biiitch!!! (so in other words you are saying the biiitch to the person who is listening) biiiiiitch
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.