rule 0 

This is an unspoken rule in Table top RPGs. It is that the Game Master, or whoever is running the campaign, can simply say no to anything the other players suggest without explanation.

Player: I want to make a half dragon werewolf wielding two greatswords.

GM: I'm invoking Rule 0. No.

rule 0 by korik1 November 22, 2007

Number 0 

Thinking you have to take a dump but only passing gas.

Feeling a large number 2 Wayne squattled to the bathroom only to leave a number 0.

Number 0 by nokidz June 3, 2009

Level 0 

Also known as “The Lobby”, Level 0 of the Backrooms is an everexpanding non-euclaidan office with yellow wallpaper and damp carpeting.

Level 0 is one of the more peaceful levels of the Backrooms.

Level 0 by MaybeARealWord January 12, 2022

100 to 0 real quick 

to go from good to bad in such little time

their relationship went from 100 to 0 real quick.

100 to 0 real quick by fosho679 May 21, 2018

?/>.<,MmNnBbVvCcXxZz"':;LlKkJjHhGgFfDdSsAa|\}]{[PpOoIiUuYyTtRrEeWwQq+=_-)0(9*8&7^6%5$4#3@2!1~` 

you are so incredibly bored that you need help

like please talk to somebody or touch grass
if you want to talk here: Manhera#5991

person: ?/>.<,MmNnBbVvCcXxZz"':;LlKkJjHhGgFfDdSsAa|\}]{PpOoIiUuYyTtRrEeWwQq+=_-)0(9*8&7^6%[5$4#3@2!1~`
person 2: end me

?/>.<,MmNnBbVvCcXxZz"':;LlKkJjHhGgFfDdSsAa|\}]{[PpOoIiUuYyTtRrEeWwQq+=_-)0(9*8&7^6%5$4#3@2!1~` by pyxus June 16, 2021

902.0 

A word used to describe hipsters who dress like they live in the 90's

902.0

902.0 by Trangface May 12, 2014

echo %0 %0 

A method of crashing your computer:

Put this is an batch file:

echo %0
%0

and run to crush your PC.
Only works on Windows 7 and above, 64 bit.

Troll: have you tried echo %0 %0?
Victim: No, what does it do?
Troll: It gives you $1000!
Victim: OMG!! Please do it for me!
Troll: **crashes computer**

echo %0 %0 by kevindong August 17, 2016