Beef curtains (or swollen Labia) that hang so low that they keep one's ankles dusted.
Damn, did you see how clean her ankles were?
Yeah, she may have ankle dusters.
When a person's trousers are too short so that the bottoms of the legs ride just around the ankle/sock area.
Dave: Hey, nice ankle dusters, Tim
Tim: Listen, I've grown a bit since last week and can't afford a new pair of jeans!