It's greedy to eat too much
Matt is starving after a long day at school and is sitting down for dinner with his family.
Matt wants to eat food to satisfy his hunger.
Matt eats a reasonable portion of the various foods his mother has prepared for dinner.
Matt eats all the dinner rolls before any of his family members can have a single one.
Matt's family have a pleasant and enjoyable dinner together.
Matt's family is disappointed and upset that he was selfish and ate all the rolls.