Used for an old woman who has bags on her bags, rolls on her rolls and wrinkles on her wrinkles.
*old woman* You want some of this?
*guy 1* No, you old hag!
LATER
*guy 1* Dude, did you see that?
*guy 2* yeah you got hit on by that fat old bag of sag.
A large satchel like area situated below the stomach region, where excess (often wrinkly) fat is placed, in a hopeful attempt to hide away the unattractive overproduced skin. Elderly and obese women usually possess this kind of bodily object.