I love idioms and old expressions. An idiom is a word or phrase that is not meant to be taken literally. An idiom's figurative meaning is most often separate from the literal meaning but many idioms stem from some literal origin.
Discovering and understanding their origins is, for me, both fascinating and informative. Sometimes the origins are hilarious and sometimes they are grim or off color. However they originated, most have significance and even relevance in the world, centuries after their inception. It seems that humans and human nature have not really changed much despite all the knowledge and advances in industry, technology, medicine, and production of any kind. That’s what gives continued life to the more well-known idioms.