A person who hates buying their own groceries, so they eat everyone else's. When caught in the act, they always feign ignorance. There is always an excuse for taking the food.
"The fridge bandit must have seen my chicken, because all of a sudden, it doesn't have any damn legs"
"I went to make a peanut butter and jelly sandwich, but the damn fridge bandit done gone n' eaten my loaf"