9/11

The 9/11 is a sexual activity in which a guy airplanes (sometimes called the superman in other cultures) a girl while the second guy dives in from behind. When they all three fall this is called the 9/11.

Last night Jack was airplaining Jill while I came in from behind. It was kind of unstable and I 9/11 'd it.

by iDouBLETAPo January 21, 2018

9/11

9/11 is an overused meme.

Oh my God 9/11 was an inside job

Or
9/11 couldn't have been an inside joke because the planes hit the outside.
Or
I caused 9/11 .

by PositiveJack September 4, 2017

9/11

Like 7/11, they just open at nine, instead.

Hey, are you goin’ down to 9/11? If so, can you buy me a sandwich?

by Andersn’t not February 12, 2020

9/11

national bring your plane to work day

guy 1: "Hey, you know it's national bring your plane to work day on 9/11"
guy 2: "Yeah? Where do you work?"
guy1: "World trade center"

by rapey maximus September 11, 2010

9/11

The ninth of November

9/11 is the ninth day of the month of November

by clevelandsteamer936 January 14, 2008

9/11

The Attacks on the Twin towers on September 11th 2001

“Bruh, My favourite holiday is 9/11.”

by BRUHemian Rhapsody April 19, 2019

9/11

9/11 is four minutes before nine fifteen

Jeez is that the time 9/11 four more minutes and it will be a quarter past the hour.
Time to go to the pub to meet my friends and have a pint.

by Iva Boughta DePump September 27, 2005