1 definition by That bitch tree
The highest arching rule in any friendship that allows complete equality or level of bitchiness to be matched by the the other friend/friends with impunity (if your friend is being a bitch you can be a bitch back)
Sarah was being such a bitch today so I told her to fuck off and she started yelling at me. Like have you never heard of The Rule of Bitch Equality?!
by That bitch tree March 22, 2018