Rule 15.5 

If a video game exists, there is Thomas the Tank engine of it in some form. Whether it be through the game's own features, mods, or just artwork, you are bound to find something related to Thomas the Tank engine in any game.

>"Seriously, this game just came out and already there is a mod that adds Thomas the Tank Engine?"
>"Yeah dude, that's Rule 15.5 of gaming"

Rule 15.5 by GrimoireOfMarisa November 21, 2019

Rule 1.5 

Mexicans do not exist. They are a myth, like Santa, the Easter Bunny, or the Tooth Fairy. They are just something your mother tells you are real when you are little.

You will go into extreme stages of denial after reading this definition. Go seek therapy, you'll need it.

Adrian: "Hi, do you want to come to my house? You will meet my Mexican mom."

Daniel: "Rule 1.5"

Adrian: *extreme stages of denial*

Rule 1.5 by Elfdemon September 4, 2014

Rule 1.5 

Rule 1.5 is the rule that any other rule following rule 1.5 is no longer existent and doesn't apply to anything.

Rule 1 - You must follow rule 1.5
Rule 1.5
No rule
No rule
No rule

Rule 1.5 by AR!TANE October 13, 2009

Rule 155

Once you look up all the rules in the urban dictionary rule book and find they have come to an end you must make a rule restating this exact rule

Hmm, I am spending way too much time looking up the rules of the internet. Time to make rule 156 that is stated by rule 155

Rule 155 by Baumz February 7, 2019