Top Definition
When you have to poop in public but the toilet seat is beyond filthy so you have to crap so bad you resort to hovering above the seat in a "crumping" position. This usually results in splashing of water on the anus and/or left over fecal matter between the cheeks.
Yo Mike, I had to take a poo at work but someone pissed all over the seat so I had to do a dump n crump.
by PooLoversRUs November 27, 2010

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