Fat fetishism
Fat fetishism or adipophilia (Latin adeps - "fat" and Greek φιλία - "love") is a sexual attraction directed towards overweight or obese people due primarily to their weight and size. A variety of fat fetishism is 'feed(er)ism' or 'gaining', where sexual gratification is obtained from the process of gaining, or helping others gain, body fat, not necessarily from the fat itself, though there is much overlap between these groups.