Bumpiss

The event of an extremley runny shit, usually caused by recent diets.

I ate a whole box of bran flakes and Iv'e been bumpissin' for hours!

by o0 I3LACKOUT Oo September 28, 2008

bumpiss

The smell of beach restrooms and out door elevators.... It smells like bum piss--- bumpiss.

DAAAAAAAAAAAANG!! this place smells like bumpiss!

by Alex and Aidan September 11, 2007

bumpiss

The act of sending BUM URINE to someone via the mail

"damm dude you send you boss BUMPISS!" he is an asshole

by chubbyshawn December 14, 2007