A boxing term used to label easily-beaten and out-of-shape/unskilled/past-their-prime boxers who should never have stepped into the ring to face stronger competition.
He couldn't last a full first round against real professional boxers like Sugar Ray Leonard and Marvin Hagler and Thomas Hearns. Instead, his victories only came against a series of aging bums, each of whom were sent into the ring after being paid a few bucks by unscrupulous boxing promoters.
by Joe Bloggs II August 19, 2012
1. A homeless person.
2. British/Australian equivalent of "butt".
3. To fuck someone up the arse.
A bum bummed me up the bum.
To get something from someone else for free. Also used to borrow, but with the understanding that repayment might not happen.
Hey, can I bum a smoke off you?
by Tim March 13, 2003
Ass, butt, booty, gluteus maximus....
By George, what a big bum she has.
by Methinator March 15, 2004
Someone who does nothing all day and expects everyone to bend over backwards to please them.

Someone who has no liscense, no car, no job, no girl.
Yo mike can you come scoop me up man and drive me around all day.
by darken one May 08, 2005
1. (n) (brit) your arse
2. (n) a homeless person/layabout
3. (v) to do someone up the arse, ie. perform anal sex on them
4. (v) (brit) to like something/someone very strongly
5. (a) (brit) fit, hot, sexy etc.
1. "ouch I landed on my bum ;_;"
2. "any spare change?"
3. "wow todd bummed me SO hard last night I won't be able to sit down for days"
4. "OMG I just totally bum chocolate ice cream!"
5. "phwoar he's so bum!"
by joeparts July 21, 2006
Short-word for bummer. For use when something negative happens.
"Did you hear that Michael Jackson died? Bums!"
by JackieJeremies July 20, 2009
Anybody 24 years or older who's still jobless and living with his parents. See loser.
God when will that lazy bum get off his ass and get a job already?
by w00tw00t April 05, 2003

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