Twat waddler. Obnoxious woman (often fat and otherwise generally disgusting) who appears to have a corn cob shoved up her ass when she walks. She is of little use in general, talks too much, and often has a voice which rapes your ears. It's usually all one can do to avoid the twaddler invoking the natural, undeniable, involuntary physical reflex of a punch to the throat after any conversation over a few seconds in length.
The fat obnoxious twaddler was so busy running off at the mouth as she twaddled down the stairs, that she tripped and fell the rest of the way down, breaking every bone in her disgusting body.