A butter body fat chick is not just a quick shameful lay.
It's a project that is best undertaken for several months, if not years, at a time.
Make that fatty shed those pounds (and get some skin tightening surgery if the skin is flabby), and you got yourself a thin hottie with the blowjob skills of a fat chick. Because of her past as a fat chick, she'll do that little bit extra (anal, rimjobs, etc) to please you unlike a thin chick (unless she has a history of abuse, but those chicks are crazy in a bad way).