plural of bum bag

(chiefly Britain, slang) Someone or something very annoying.

(idiomatic) Bad advice or information, regardless of intention.

(chiefly UK, New Zealand, slang) The top of the buttocks exposed when trousers are worn too low, or when the wearer bends over.

(slang) The space between the buttocks.

(UK, derogatory slang) A male homosexual's partner; a male homosexual.

(literally) With one's bottom exposed, as for a spanking or a mooning. / (by extension) Stark naked.

(transitive and intransitive, informal) To wander around idly to no purpose; to loaf or loiter.

(slang, transitive) To cause a person to be depressed or disappointed.

(slang) A false accusation, or an injustice, especially one that leads to imprisonment. / (idiomatic) An undeservedly unfavorable portrayal or reputation.