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."
by 4chaner69 June 30, 2021
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Pronounced: Nine Elevened

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:

-Dude, did you see that?

-Yeah, that bitch just shot you down.

- Man, I just got 9/11ed.

-Nigga, that was some straight second tower type shit.
by Tonka Tough August 6, 2011
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when the drunk bitch your dancing with at a club completely passes out and falls straight down like a demolished building
-wtf happened dude
-nothing, nothing she dropped her phone and shes
looking for it
-no dude shes out, she totally just got 9/11ed
by gman34 March 20, 2008
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Yo, I 9-11ed that pussy!
by manormonkey? September 3, 2010
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Another way to express that you bombed or failed at something.
Mom: How was your test?
Son: Awful. I 9/11ed it!
by Chrismcmc February 6, 2017
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