He's as mad as a hatter!Whether it's like a bump on a log or a bat out of hell, these expressions have been around forever, but we've never really known why ... until now! Finally Dr. Funk explains more than 400 droll, colorful, and sometimes pungent expressions of everyday speech. Derived from classical sources, historic events, famous literature, frontier humor, and the frailties of humankind, each of these sayings has an interesting story behind its origin.If you've ever wondered why when you're in a hurry you are told to hold your horses, wonder no more!