1. A homeless person.
2. British/Australian equivalent of "butt".
3. To fuck someone up the arse.

Running for exercise and picking up trash you find along the way. It's good for the body, mind, soul, and environment! Started in Sweden but is making its way to the U. S.

To get something from someone else for free. Also used to borrow, but with the understanding that repayment might not happen.

US/Canada
1. Pejorative for a homeless person, - especially one that makes no attempt to work or better himself (contrasted with the more respected working homeless “hobos”). Probably comes from the expression “lazy bums.”
Get a job you F’ing bum.

2. To shamelessly ask for something (in the manner of a bum – see above).
Dude can I bum a cigarette, five dollars, and a ride to the…

3. A loser with nothing going for him (no job, no aspirations etc). Especially an unworthy husband or boyfriend.
I can’t believe she’s with Jim. Always drinking, never workin, the guy is a bum.

UK/Commonwealth:
4. The more polite way of saying ass.
Does my bum look big in this?

5. To do in the bum.
I bummed a tart.

Afganistan
6. Bum is a major city in Afganistan.

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.

Ass, butt, booty, gluteus maximus....

Short-word for bummer. For use when something negative happens.