In regards to friendship, the cardinal rule is never dating your friend's ex-boyfriend. When a close friend and their hunny break up, being a friend means you dont try to date, mack, get with, or hook up with the ex. Breaking this rule defiles friendship and ruins bonds and all friendly love with the rule breaker in the circle of friends.
After Max broke up with Sid, Alexis, a 'friend' of Sid, broke the cardinal rule and started dating Max less than a week after the break up. Sid and Alexis' friendship was ruined and Sid soon learned that no one gave two squirts of piss about her emotions, regardless or what was said.
by Sidoese February 5, 2009
 Get the cardinal rulemug.
Get the cardinal rulemug. by what is a internets? August 14, 2016
 Get the Rule 93mug.
Get the Rule 93mug. "If one gest jumped by the Bra Boys in Maroubra's Last Goon Party, and you quickly realize that there is more than one guy, one can exclaim the cardinal rule '1-V-1', meaning the gang must give you a fighting chance, taking you on one at a time."
by bigberg June 9, 2014
 Get the Cardinal Rulemug.
Get the Cardinal Rulemug. by Jay's Wing January 2, 2019
 Get the Rule 34mug.
Get the Rule 34mug. When someone fails to understand the essential part of the statement (misses the point) and rather points out an error in that statement.
Intervention: *Trying to get through to Timmy that family is everything, and you need them.
Fam: Back when QweZey was in trouble with the law, he came to us for help. Not his boy Alex, us his family. When shit goes down TImmy, remember family is everything.
Qwezey: I actually did call him, but you guys got to me first.
Fam:*glare- *85% Rule bruh, 85% rule
Fam: Back when QweZey was in trouble with the law, he came to us for help. Not his boy Alex, us his family. When shit goes down TImmy, remember family is everything.
Qwezey: I actually did call him, but you guys got to me first.
Fam:*glare- *85% Rule bruh, 85% rule
by linear_terms January 28, 2019
 Get the 85% rulemug.
Get the 85% rulemug. Dude 1: "Hey there's no trap remix of this song!"
Dude 2: "Rule 91 dude."
Dude 1: "I should get to work then."
Dude 2: "Rule 91 dude."
Dude 1: "I should get to work then."
by Intergalactic crackwhore July 9, 2020
 Get the Rule 91mug.
Get the Rule 91mug. 