I believe the character in the show she referenced has her jaw locked and couldn't eat. It seems to me that she may have had a legitimate problem of some kind, though it was probably caused by obesity. My summary is she was ~400lb, lost 50lb due to abdominal pain when eating from this condition, and then realised she could just drink ice cream and blended burgers and gain weight that way without pain. She says she "would have lose 200lb" had she not realised this, which is a funny way of saying a condition that causes extreme abdominal pain still wasn't enough to get it below 350lb.