Rule 34 

Rule 34 states that if something exists, porn involving that thing also exists.

Guy: What is wrong with these people!? Handicapped midget kitchen utensil porn!?
Other guy: Rule 34 Dude, Rule 34.

Rule 34 by AluminumFoil January 13, 2010

Rule 64 of the Player's Rulebook 

Rule 64 states that the act of "bragging" about female "conquests" is disallowed. This is due to the negative global image such a depravity places on the art, as well as the decrease in social worth for the individual as those who are extremely successful feel no need to broadcast the fact.

Joel: "Duuude, I got soo many bitches last night, call me Mr.Bitches"

Josh: "Im'a call you "Bitchy" if you don't shut up. Rule 64 of the Player's Rulebook. You obviously never get any. Bitchy"

Rule 64 of the Player's Rulebook by Endo/Shen October 28, 2010

Rule 104 

Every conversation will eventually turn to a) food and b) cats.

P1: "Why do we end up talking about food and cats every time we have a discussion?"
P2: "Rule 104, mate."

Rule 104 by Ikchen September 24, 2011

rule 943 

There exists a furry version of every waifu, no exceptions

1: Did you see the furry rule 943 of your waifu?
2: Yeah man, it was hot as fuck

rule 943 by Rule 943 July 20, 2017

Rule Zero 

When you're trying to figure out whether doing something is a good idea or not, there are various rules that come in to play, such as Have Fun, Do No Harm, Have Fun (again), What Happens in Vegas, etc.

Rule Zero, the rule that always comes before all the others, the most important, basic rule of doing anything is: "Don't be on fire."

- I can't get this bbq to light.
- Here, use some petrol.
- I am not breaking Rule Zero to cook a burger.

--
- Hey, let's see what happens if I fill my foreskin with lighter fluid and light it.
- I am invoking Rule... wait... yeah, go ahead, that'll be funny.

Rule Zero by tbrd June 16, 2010

rule 34 

Anything and Everything on the internet has been made into a porn. You just have to look hard enough. Only exceptions are as follows:
>Chuck Norris (duh)
>Rule 34 (you can't rule 34 rule 34)
>Abstract objects (you can't rule 34 happiness)

guy - Oh. My. God.
girl - what?
guy - I just saw a rule 34 for my mother.
guy 2 - do you like it? made it myself.
girl - I'm leaving now.

rule 34 by rule 34 gundam lover January 12, 2011

rule 89 

If you're a teen or preteen girl on YouTube and you take requests or dares, sooner or later, someone will ask you to show your feet. NO EXCEPTIONS.

lollytolly: I take requests!
footboy1971: COULD YOU SHOW YOUR PRETTY FEET?
someotherguy: Lolly, he's asking to see your feet! Watch out for rule 89!

rule 89 by yourballsdammit December 1, 2009