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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.
by Chankla Keating November 13, 2008
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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!
by piss bum April 09, 2005
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