When two of your friends have sex in the same room as you and don't warn you or ask you if it's okay.
Its called being 9/11ed because you'll never forget.
a: "Stacy and Tod totally 9/11ed me last night."
b: "Oh yeah they tend to 9/11 a lot of people."
When you're feeling super good, like you are on top of the world, and some force, probably a stupid bitch, completely makes you do a 180 and start hatin' life.
Like The World Trade Center on 9/11/01. Thus, the term 9/11ed.
You are walking through Wal-Mart and you see a girl you know and you enthusiastically say hi and all you get is a very under-enthusiastic hello.
The conversation amongst you and you're friends might go something like:
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.