Trousers that are cut very low on the hips.
 Example sentencesExamples
-  With the bumsters' new focus on butt-cleavage within the society of the naked ape, push-up brassieres will have to compete aggressively to bring attention back to the chest.
 -  For years, men have been bombarded with low-cut bumsters, gaudy tracksuits and blinged-up denims.
 -  Your key allies in the war against bumsters are Kath and Kim.