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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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2
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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