What is "have eyes bigger than one's stomach"

alt. 1 (context idiomatic English) To take more food on one's plate than one can eat; to be greedy. 2 (context idiomatic English) To want more than one can handle. vb. 1 (context idiomatic English) To take more food on one's plate than one can eat; to be greedy. 2 (context idiomatic English) To want more than one can handle.