The Gretch: A very hot girl, usually with a fine ass, thinks her shit don't stink, innocent looking then turns freak when she gets between the sheets, AND with utter certainty, is known to frequently spread STD's far and wide. Also swallows every time.
Shit, stay away from that ho, she's got a nasty case of The Gretch!!
She's got a fine ass and I really want to fuck her, but everybody knows that ho's always got The Gretch.