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!

Bumpiss 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!

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

bumpiss by chubbyshawn December 14, 2007

Blumpiss 

Getting a blowjob while taking a dump (blump) and surprising the person blowing you by taking a Piss in their mouth.

I was getting a great blump (blow job during a dump) after the bar and instead of blowing my load I took a piss in their mouth and created a blumpiss!
Blump blumpkin blumpkin backfire

Blumpiss by jayklaw May 18, 2016

bum piss 

when you have a shit and it is basically water coming out of your ass

'john did a hell of a bum piss'

bum piss by Mark9288 January 27, 2007

bum piss 

bum piss is when you have had an illness or it can happen when you take to many drugs.

your guts empty them selves like passing water through your bottom = bum piss

bum piss by peter mills August 24, 2006

bumkiss 

Performed by farting into a cupped hand, raising the cupped hand to the mouth and blowing the fart over the nearest victim.

Here mate, have a bumkiss.

bumkiss by fartsoffortune September 9, 2010