Number 11

A very bad word emphasized on an episode of "Spongebob Squarepants" where Spongebob learns a nasty word, presumably the word fuck or shit, or bitch. And cause a fuckload of disturbances around the Krusty Krab. The Number 11 is a very naughty word and whoever says it gets snitched on. Number 11 is the word: "Fuck".

Jim: Fuck! I forgot to save!

Michael: OOOO, you said number 11! I'm telling mooommm.

Number 11 by TheGayAccount July 6, 2018

Number 11

A nasty yet entertaining trick played by men on women (or other men depending on how you are).
Committed in the closing moments of a blowjob, It is the act of grabbing the recievers head and jamming it down on your dick as you cum, thus making them choke/gag, re-routing your cum out through their nose running out of both nostrils. Number 11.

If you need an example, try it.

Number 11 by Serial T July 16, 2005

Number 11

A new term for sex so parents and others, don't know what you're talking about.

"i heard that yesterday Shaunt'e went to Chris-stuff's house and they did number 11'
"EWWWW!!! i just walked in on my parents having number 11 !!!"

Number 11 by Amayziinqgx3 December 27, 2009

number 11 bus 

Walking somewhere on your own two legs that God gave you.

(The legs each represent a "1.")

"Lazy North American mofos are so dependent on their cars they won't even take the frigging number 11 bus 2 blocks."

number 11 bus by SeaBat June 12, 2006

The Number 11 

A hairstyle more commonly known as "The Bowl Cut" or "Mushroom Cut". It is a cheap haircut given mostly to little kids or fashion oblivious adults. The origin for this word comes from the streets of San Francisco, where outside small asian barber shops, a sign showing various haircuts available corresponds to a number chart. The #11 being the bowl cut. This hair/number terminology is Universal in the streets of San Francisco and hair stylists alike.

"Oh my God, did you see that guy?! He totally had The Number 11. What a weirdo!"

or

"Hi there, could I please get The Number 11? I wish for my hair to look very strange today. Thank you.

The Number 11 by Klexington January 27, 2009