2 males that enjoy anul sex and repeat this proces as an occasional social interaction

may be used as an insult or a verb.
Cool people: Jesus Steven and Diddy are right bum buddies.

Steven: hey diddy , wanna be bum buddies?
by Dom and matt April 7, 2006
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There go the bum buddies.
by SomeBozo July 2, 2007
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Two or more males taking part in gay anal sex and always with each other.
Frank and liam are bum buddies they like to have gay sex and are always with each other.
by charlie8764 April 7, 2011
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When you sit on a toilet after someone has been on it and the seat is still warm..
Damn bro.. This seat is still warm, I guess I'm bum cheek buddies with fat Larry now...
by CuriousSamIam October 14, 2021
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