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Used to describe the runny, splattery, and gassy shits, usually experienced after a long night of consuming rum and cokes.
Wow, I’ve got a real bad case of rum bum today, I’ve gone shit three times in the last hour!
by venom363 October 19, 2006
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When you have had one too many drinks (most common with rum) and you can’t stop shitting (generally explosive)
Dude, why didn’t you go to your grandpa’s funeral?

Lol my bad bro, i had a savage case of rum bum, i couldn’t get off the shitter
by Alcohol slangs January 06, 2019
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person who chases the sun and when he finds it sits in the shade with a drink of rum.
he quit school when he inherited and became a rumbum.
by a.b.eirce April 10, 2013
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