when you have a shit and it is basically water coming out of your ass
'john did a hell of a bum piss'
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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
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One who has pissed himself repeatedly leaving rings like a tree and has no home.
The Fire Dept. has gone on the same piss bum six times today.
57👍 4👎
piss bum is what happens when u go camping and you need to piss in the bush and u laugh and get it all over your pants instead.
it is also emma's nickname.
oi piss bum, i can't believe you piss bummed again!
5👍 57👎