rule 31 

Meaning "Tits or GTFO (Get The Fuck Out)". Usually found on sites known as 4chan, 2chan, ect

Someone posts a picture of a pretty girl and the next post states "Rule 31"

rule 31 by Eternal812 July 6, 2008

Rule 31 

The girlfriend of a bro is not allowed to spend a birthday alone without partying, no matter what!

My girlfriend tried to break Rule 31

Rule 31 by Rulebook February 26, 2021

Rule 31.5

The opposite of rule 63. Used for art that depicts a character with their cannon gender. Created to help people find art of the character's original gender.

Person 1: Bro, I can only find genderswap art of this character!
Person 2: Try searching with the Rule 31.5 tag!

Rule 31.5 by Rule63Police July 30, 2024

rule 2:31 

at the time 2:31:00 (A.M. or P.M. i don't believe it has been decided) all are located in Robin C.'s bed doing things of a sexual nature.

theater geek one: hey! do you know where we are at 2:31?

theater geek two: ROBIN'S BED!!! RULE 2:31!!!

rule 2:31 by haimi....2.0 October 18, 2008

rule 311 

when you hear a 311 song and have to sing it out loud and dance while toking a bong!

ah shit its rule 311 love this song hand me the bong!

rule 311 by yortrobatj February 16, 2014

rule 313 

If it moves it is a fetish

Guy 1: dude did you hear about that guy who has a fetish for putting shit in helium balloons.
Guy 2: wow rule 313 right there bro.

rule 313 by TFA_Shadowwalker_090 June 30, 2015

Rule 319 

Rule 319 states that:

a) everything and anything is bound to be connected or affected by the coronavirus in some way.

b) for every community of a specific topic/interest on the internet, there will eventually be discussions pertaining to the coronavirus.

Dude 1: Yo if you search literally anything and put "coronavirus" at the end, there's gonna be at least something related to it.
Dude 2: LOL holy shit ur right, I just searched pornhub and coronavirus and there's actually news about that
Dude 1: Rule 319 man

Rule 319 by Mary Mary Quite The Contrarian April 11, 2020