Full of beans

    生龙活虎    

    A: So full. How much did we eat?

    B: Well, we started with a big pot of chicken soup, then some lovely Vietnamese fried spring rolls, a plate of Polish dumplings, a huge steak, half a pizza, some roast potatoes, fish pie and ice cream.

    A: My stomach is stuffed, and I feel very sleepy now.

    B: But I am full of beans!

    Note: The idiom means "have a lot of energy and enthusiasm." It was originally said of horses after a feeding of horse beans. Undoubtedly the spirited state of a bean-fed horse was observed in ancient times, but the saying was first noted about a century ago.