arm swings

(n) The fatty, gelatinous, sagging skin that appears underneath the length of the arm from the shoulder down to the elbow. Called "arm swings" for their characteristic swaying, back-and-forth motion they make whenever they are moved around. Commonly found on: Obese adults/kids, elderly people, people who are out of shape, and anyone who loses a great deal of weight in a short amount of time.