A Bee in Your Bonnet?

Why is a police informant called a "grass"? What have the bee's knees got to do with excellence? What was the name of Lady Godiva's horse? In polite society, can you speak of the weather being cold enough to freeze the balls off a brass monkey? What is the origin of the term "upper crust"? Why do we throw spilt salt over our left shoulder? Why do men's and women's shirts button on the opposite sides? Why do we wind a company up, rather than down? What is the origin of the phrase "in the limelight"? The fascinating answers to these perplexing questions can be found in this entertaining book.