Pics or it didn't happen. Used in forums when a user makes a ridiculous claim nobody thinks they can back up. Often used when a member claims to be female, due to the high likelyhood of this being untrue.
User: zOMG!1!1!1 I just fucked Britney Spears in the ass!1!1!!
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.