The 6 rule 

Deep down what every woman wants in a man - 6 feet, 6 inches and 6 figures.

Girl 1: Look at that guy over there!
Girl 2: I'm sure he definitely follows the 6 rule!

The 6 rule by allieb December 8, 2014

The 3-6 rule 

The 3-6 rule is the only exception to the bro code, ( but only if both bros have agreed upon it)

The rule is that after a bro breaks up with a girl the other bro has to wait 3 weeks before he can officially get together (date) with that girl. After that 3 week he has to wait another 3 week to bang her. Thus making 6 weeks.

Bro1: Hey bro if you and Jackie ever break up can we use the 3-6 rule?

Bro2: sure!

The 3-6 rule by Landocoats November 3, 2013

The 6 Gram Rule 

a stoners definition to a total looser who is almost unbearable to hang out with and the only exception to hanging out with him is "the 6 gram rule", meaning you are never to hangout with him unless he has 6 grams to smoke with you and your friends.

friend #1: Hey guys keith wants to chill with us tonight.
friend #2: Does he have 6 grams?
friend #1: Uhh, let me check.....No...
Friend #2: "6 Gram Rule" no exceptions.
friend #1: Okay il tell him to just fuck off.

The 6 Gram Rule by JollyRogerWeenis May 24, 2005

the 6 second rule 

Basically this rule states that you have to take a shit within 6 seconds. If it takes you any longer than 6 seconds, it's considered a bad day. So you better start pushin!

Whenever I'm on the phone with my friend I use the 6 second rule so she doesn't have to wait very long.

the 6 second rule by EmAlinator October 6, 2010