Bumming

To sodomize; to engage in anal sex.

To ask someone to give one (something) for free; to beg for something.

"Can I bum a cigarette off you?"

To stay idle and unproductive, like a hobo or vagabond; to loiter.

"I think I'll just bum around downtown for awhile until dinner."

To wet the end of a marijuana cigarette (spliff).

To depress; to make unhappy.

To make a murmuring or humming sound.