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Skiping to the very last page of an Urban Dictionary definition to see what stupid people and trolls post; A very entertaining pastime. Not to be confused with Elevening
Guy A: "Hey, did you know that Sean Hannity is the vanguard of the American way?

Guy B: "Someone's been 11ing."
11ing by booshtoosh December 18, 2011
Related Words
1. To ruin or undermine
2. Something so horrible, it can only be compared to 9/11
1. "MOM! You 9/11ed my sandwich!"
2. "Bongo keeps on pissing on the kids. He's totally the 9/11 of party clowns."
3. "I was having a great day, until Brandon started 9/11ing it."
9/11ing by TheNoogie April 17, 2014
When 20 Arab extremists explode in your bush.
Man last night was crazy, started at Brielle’s birthday party and ended up 9/11ing #missionaccomplished
9/11ing by John Stamos420 February 15, 2019
When one guy has his penis erect straight up and another guy flies his dick like an airplane into the other guys dick.
Guy: We totally 9/11ed last night.
~~~
Guy: We should try 9/11ing.
9/11ing by TrentonPottruff November 22, 2016
When two guy stick their dicks straight up and another guy runs into them with his penis
What are you gonna do to us step bro?

I’m 9/11ing you.
9/11ing by DJVenus February 12, 2021
Verb- Act of showing support for the Seattle Seahawks by proudly sporting jersey's and other gear, and by displaying #12th man flags. 12ing should be done as often as possible if not all the time. If you see a fellow 12th man or woman 12ing, yell "SEA-HAWWWWKS!!!!" to show your pride. Post pictures of yourself 12ing whenever you can! GO HAWKS!
The frenzied fans of the Seahawks brought their 12th Man flag on vacation and posted a picture of themselves "12ing in Vegas" online

The Hawks fans were 12ing so hard at the game, the Whiners tries to impose noise control rules.
12ing by Beastmode Allie January 13, 2014