A person who consumes more than 3000 calories per day, resulting in NO weightgain whatsoever. Someone whose metabolism can compensate for their immense eating habits, and still look good in hotpants.
Michael: I just had half a pizza, some cake, a packet of cheeto's, and a burger.
Tracey: Is that so far today ?
Michael: no just for lunch.
Tracey: You FATO.