A person who posts on the popular former *NSYNC messageboard the JJB. In order to become a JJBer, it is encouraged but not required to be (but not limited to being) an attention whore, 32 year old virgin, have an IQ of 48, have multiple personalities, a vivid imagination, post controversioal topics just for results, or any other variety of annoying behaviors or characteristics.
A girl with meat hanging from her vagina? A young man named Steven who poops from his penis? A 'homeless' scam artist with a crooked nose ring? Just a few of JJB's finest JJBers.
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.