When called it reverses what was previously said, or reverses the rules for what game/event is going on. Based on the fact that in golf the lowest score wins which is the opposite of most sports.
by Ephagee February 13, 2009

Example 1
Person A: Can i get a Meat Craver Pizza with extra Desu?
Person B: Lolwut?
Person A: Rule 50.
Example 2
Greetings! I came to your online community and i find your lack of Desu is disturbing. Please follow Rule 50.
Example 3
Desu Desu Desu Desu Desu Desu Desu Desu Desu Desu Desu Desu Desu Desu Desu Desu
Person A: Can i get a Meat Craver Pizza with extra Desu?
Person B: Lolwut?
Person A: Rule 50.
Example 2
Greetings! I came to your online community and i find your lack of Desu is disturbing. Please follow Rule 50.
Example 3
Desu Desu Desu Desu Desu Desu Desu Desu Desu Desu Desu Desu Desu Desu Desu Desu
by superfly98 February 9, 2009

An agreement between individuals to not discuss publicly events, conversations, or happenings they have shared in common. Applies to nights out, parties, business meetings, conversations, etc. Can be heard expressed as "What happens here, stays here."
We must keep this discussion between us. I am asking you to apply "The Vegas Rule" on this one. You know... "What happens here, stays here."
by admancorb August 10, 2009

1. Rule X is defined as the rule that is the answer to all "Why/how come questions". It states that To all Why questions the answer is X.
2. You do not question Rule X because the answer itself is rule X. Do not ask what the X stands because it is an unnesissary question. And rule X does not answer it.
2. You do not question Rule X because the answer itself is rule X. Do not ask what the X stands because it is an unnesissary question. And rule X does not answer it.
by Exman33 April 19, 2010

Dude 1 : did you see that vid of someone playing Bad Apple on a calculator?
Dude 2: nah I saw it on a slice of volume
Dude 3 : it was on a flip book!
Dude 4 : I saw it on a pregnancy test
Dude 5 : literally rule 86: if exists it, can play bad apple
Dude 2: nah I saw it on a slice of volume
Dude 3 : it was on a flip book!
Dude 4 : I saw it on a pregnancy test
Dude 5 : literally rule 86: if exists it, can play bad apple
by Hu Tao February 28, 2023

There once was a man whose name starts with G. This man had a tendency to continue a joke and take it over the line, usually resulting in something disgusting or unfomfortable for everyone in the room.
Me: "Hey Greg, I went do to the bar last night where were you?"
Greg: "I was going down on your Mom."
Me: "G Rule!"
Greg: "I was going down on your Mom."
Me: "G Rule!"
by coff April 3, 2009

Big Mother Fucker Rule,
When your friend drives a tiny car, the big mother fucker automatically gets front seat, if there are two big mother fuckers, you take two cars
When your friend drives a tiny car, the big mother fucker automatically gets front seat, if there are two big mother fuckers, you take two cars
Sean - SHOTGUN
Jeremiah - Nah dude, BMF RULE
Sean - Fuck that, its a four door
Jeremiah - Dude its still BMF RULE, get in the back
Sean - I fucking hate you, get the fuck out of my house
Jeremiah - Nah dude, BMF RULE
Sean - Fuck that, its a four door
Jeremiah - Dude its still BMF RULE, get in the back
Sean - I fucking hate you, get the fuck out of my house
by JeremiahFBaby February 27, 2009
