There was a joke on Family Guy which was a poke at how women are treated - "Lois, fat men aren't fat, only fat women are fat".
My husband is about 80lbs overweight, he gets told "Oh, you must be so strong" but his sister (the same amount), apparently "can't control how many croissants she eats", by dad. Really??? I think this is in the minds of a lot of people, to treat overweight women with disdain.