Even if the cardio bunny is being bitchy and it's not just shit being magnified by a fat person's ego, this is some pretty elegant bitchiness. She is hitting the sweet spot of shaming getting through to the target, without things being overt enough to warrant a legitimate complaint. Dumping her clothes into a plus-size pile on the floor AND calling her out to her face AND registering a complaint first, before the fat fuck gets a chance... she is on point.