The act of having a bowel movement. The idea being that the anus is synonymous with a dark cave, and the fecal matter being brown, is synonymous with a bear.
by Ninja Medic November 05, 2011
Like Eskimo brothers (men having sex with the same female, share an igloo), "cave clan" members have had anal sex with the same female, i. E. been in the same dark hole.
Dude1: That girl ladt night had aunt Flo visiting, do she let me tap the balloon hole.
Dude2: Same with me a few months ago. She was ragging so she let me in through the backdoor. Guess we part of the same brown bear clan now.
Dude2: Same with me a few months ago. She was ragging so she let me in through the backdoor. Guess we part of the same brown bear clan now.
by CO2 June 28, 2020
Disclaimer: Don’t go out looking for cuddly brown bear! Most brown bears will not be ready to cuddle with you because they don’t like you! Cuddly brown bears like to cuddle and they are brown.
by Cuddlybrownbearlover January 15, 2018