1) Derogatory term used to refer to a plus sized individual, in most cases a woman. In some instances the individual may not be a woman, but rather somebody who complains a lot.
2) Signature sandwich of the restaurant Are U Hungry. It is composed of Cheese Steak, Chicken Fingers, Mozzarella Sticks, Mayo, Ketchup and French Fries piled into an 8" Sub Roll or Fajita Wrap, and costs $7.49.
1) a. Damn, look at that fat bitch try to squeeze into the elevator.
b. Man, I dont know what Tim's problem is, but he's really being a fat bitch today.
2) I'd like to order a Fat Bitch.