A term used by the Quake competitive community. It basically means to retreat and play on the defensive, rather than rush forward and combat the enemy. It comes from the command "+back" which is used to move the player backwards.
The antonym to this term is +forward
Player 1 took a beating after that fight so he needs to +back until he can get some health and armor.
1. A term used on W-F meaning plus reputation. Thanks to theonlydann it is now taking the place of +rep the most common formerly used phrase on Weed-Forums.
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.