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

by what is a internets? August 14, 2016

"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

That there is an 80% chance that the more attractive you find a girl the more likely that girl is a bitch
The Matt Rule totally happened to me again! Proper liked this girl and she ended up ditching me on a date and was just a downright bitch, when will I ever find love
by DarkObsession September 19, 2017

When an American is in a foreign county and sees a gorgeous woman, it's legal for him to pick her up and take her home.
by WCDD March 14, 2013

Timing is Everything.
What a lame party!..Buncha losers..
"Rule-T,Yo.Shoulda come last night when the Bikini-Team was here".
"Rule-T,Yo.Shoulda come last night when the Bikini-Team was here".
by Waboa February 5, 2009

Boyfriend: “Hand me the AUX cord. We are going to listen to my music.”
Girlfriend: “Nope I call the girlfriend rule. We are listening to my music.”
Girlfriend: “Nope I call the girlfriend rule. We are listening to my music.”
by Candace2332 July 9, 2018
