Top Definition
An exceptionally unpleasant consistency of diarrhea, noted for its stickiness and slight remnants of solidity. A sour mash besmirching ones undergarments.
"My guts are bloody awful after that curry, I've been making bumpaste all day."
by Boris DeMilo October 08, 2008
1 more definition
7 Words related to bumpaste
Poop. Shit. Crap. Fecal Matter.
Screaming Jesus on a ferris wheel! There's bum paste everywhere!
by marrrf January 22, 2007

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