1. a buttcheek (singular)
Most humans have two bums, a right bum and a left bum
by lova of sharyn lee November 06, 2005

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doing nothing, bludging
lets just do nothing and bum around
by jess March 27, 2005

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When someone really loves a certain thing. So much to the extent of it being annoying to others
"Hey you know that dave he really bums Slayer!"
by Ryan August 11, 2004

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a boy/gurl that is really gud looking
billie: 'c dat boi'
becky: 'yer hes BUM'
by ur mum September 16, 2003

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BUM is an acronym for Butt Ugly Man
Fundala: That homeless looking man over there looks way cuter than that ugly man in the 3-piece.
Fundo: How ironic. Those bums need to switch places.
by authOOr August 08, 2006

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means love. like replace the word love in a conversation with 'bum'.

can also use words like

bumming (we're in bumming at the moment) bummer (he's a bummer)
eg, 'i bum that guy so much'
by mellie bum December 19, 2005

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sumone who has really nasty breath, wears really nasty clothes, and baths whenever it rains, and is sum1 who comes up to u all drugged up at mardi gras and tells u and ur friends meaningless jokes about cannibals, babies, and clowns and laughs at himself
Dude, that bum in the yellow t-shirt just spit in ma face while telling a dead baby joke and rubbing my head with his rotting hands.... i will smell like him for weeks!!
by Shmu June 03, 2004

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