Someone who is secure with being
overweight. A fat person who is so
confident with themselves, that they are
impervious to any demeaning fat terms (fat jokes).
Person 1--- Look how fat that guy is , if I was that fat, I would never
take my shirt off at the pool, what is wrong
with him?
Person 2---- nothing, he just doesn’t
give a shit about what others think, he’s a Fatmug.