The chameleon’s dish: I eat the air, promise-crammed; you cannot feed capons so.
– William Shakespeare
Hamlet, Act 3, Scene 2. Hamlet to Claudius, says he is eating the chameleon’s dish, just air. The word "air" is a pun on "heir" and suggests Hamlet’s dissatisfaction over Claudius succeeding to the throne instead of him. He is also suggesting that the air he’s eating is crammed with Claudius’ empty promises, not enough to feed capons (fat chickens) on.