Rusty pulley

A woman, usually older in age, who is a mother; and also is retired from the profession of providing sexual services to anyone in exchange for cash money. The initial contract agreement is verbal and taken place in a public place such as a street corner.

Guy 1: "Hey man, is that the corner that yo mom use to work on?"
Guy 2: "Yeah, but she doesn't do that anymore."
Guy 1: "Aw, that's too bad. She was the best rusty pulley in town!"