n. (usually in reference to a female, however can also be used in the description of a particulary chochy
"that girl" is usually found alone amongst a group of guys, clearly reluctant to the idea of her presence, such as the only girl at her boyfriend's poker game, fully knowing that later her boyfriend will have to take shit from his friends for this. "that girl" can also be the girl wearing white at a sorority formal billed "all black." "that girl" will typically order her salad dressing on the side and then send her steak back to be re-grilled. "that girl" usually lacks moral traits such as loyalty, which can in turn lead to multiple and silmultaneous boyfriends, who almost certainly have already slept with their bestfriend. "that girl" is not necessarily a phrase used to describe a slut, however characteristics of "that girl" usually go hand in hand with those of a slut.
"that girl" is typically attracted to, if not dating, a choch
"that girl" will also resort to such desperate measures as liking her own facebook statuses or comments.