gabargenj
a person who eats so much they could feed a whole family and the dog with their leftovers
My sister is a gabargenj. She eats a whole cake and still has room for ice cream.
The gabargenj at the BBQ ate all the burgers and then took the dog's treats.
My brother is a gabargenj. He eats like a pig and then feeds the dog like it's a guest.