Rule 1.1 

You cant be a femboy if your ugly.

Catwithnoloaf:Bro you cant be a femboy because of rule 1.1

Bro:-Touches thigh

Catwithnoloaf:-Rips out bros intestines and strangles him to death with them.

Rule 1.1 by frankiemacdoggy February 23, 2024

The 3-1-1 rule 

The rule that when out drinking you can easily drink 3 pints before you need your first piss but thereafter it's one pint, one piss for the rest of the evening.

(Also applies to drinking tea if you're British).

"I've gotta go piss dude, the 3-1-1 rule's just kicked in".

The 3-1-1 rule by Woody72 May 27, 2017

The 1/19 Rule 

An excuse used when someone makes a leap in logic with no evidence behind it that leads to the solution of a puzzle regardless.

"Wow Ty, how did you know it was Mr. Red in the dining room with the knife?"
"It was quite simple, I just applied The 1/19 Rule and knew instantly."

The 1/19 Rule by Wiilink100 May 10, 2017

Rule 1 

The prime rule in Rocket League where if you lock heads with another player, you do not break the lock.

Dude, really? Why would he break rule 1?

Rule 1 by Octanebro October 20, 2019

Rule 1-3-5 

Always try to occupy odd-numbered urinals. Never occupy a urinal right next to another urinal currently in use. And never, EVER start a conversation with anyone if you are using a urinal and/or if the person you want to talk to is using a urinal. That would just make everything really awkward.

*Guy 1 enters bathroom, occupies urinal*
Guy 1: Hey bro, what's up?
Guy 2: WHOA WHOA WHOA MAN! RULE 1-3-5!
Guy 1: Oh shit, sorry
*Guy 1 moves urinals, pissing commences in silence*

Rule 1-3-5 by anonman123 April 17, 2010

rule 1 

You do not talk about fight club.

Rule 1. You do not talk about fight club.

rule 1 by Bazzterd April 9, 2008

Rule 1 

If you think something is slang or don't if it is actually slang, then it is on the Urban Dictionary.

"Yo I just put the pussy on the chain wax!"
"That is not a real saying"
"Rule 1 man..."

Rule 1 by ball-handles October 18, 2015