Rib Skin

I had my annual mammogram this week. And during the painful time while they are pushing my breast to flat pancake size they tell me that my "rib skin" is in the way and that I have to hold it back!! What a polite way of saying your fat, your muffin top, the other person that you have growing inside you is in the way of you breast picture. Talk about adding insult to injury. Do all facilities use this terminology of rib skin or do they have other polite words for fat?