The rule that you shouldn't get romantically involved with someone a close friend has been romantically involved with, at least without asking first. The reason being that whatever issues exist(ed) in the romantic relationship tend to become issues for the friendship as well.
"Did you hear that Mike is sleeping with Sara?"
"Isn't she your ex? Total violation of the friend rule, man."
"Isn't she your ex? Total violation of the friend rule, man."
by Memeslayer October 6, 2006

Biggest Tupac Wannabe out there besides Jevon Jones (Tha Realest). Does nothing but steal Tupac's lyrics and copy his cross, bandanas and bald head. He should change his name to Mockaveli.
by Ashleigh Keys May 18, 2008

The Cardinal Rule a substantial rule that is in place in a certain situation or organization. And it must not be broken at anytime.
'You must never date your friends ex. thats the cardinal rule of friendship'
'You broke the cardinal rule didn't you? Spies don't fall in love' - NBC's Chuck
'Never date a co-worker, its the cardinal rule. because when it all blows up in your face. your screwed'
'You broke the cardinal rule didn't you? Spies don't fall in love' - NBC's Chuck
'Never date a co-worker, its the cardinal rule. because when it all blows up in your face. your screwed'
by Keyls April 6, 2010

by viajen April 23, 2009

Your Bassist is a useless cunt.
by PotatoFanboy52 June 16, 2016

Similar to Rule 34, Rule 34.2 is an addition to the 100 rules of the internet that defines a common stereotype that did not exist in the original founding of those rules. In this case, Rule 34.2 is used to describe the existence of a pony variation of literally anything using the obscure art-style of the infamous show; MLP:FIM. It's entire existence is supported and expanded by bronies.
by Bill_Cosby August 12, 2014

the Nacho Rule is applied when 2 or more chips are stuck together... it is counted as one chip/nacho.
by madam-awesomeness January 2, 2012
