Several phrases have stuck around long after a time when horses were much more common in daily life. They include don’t look a gift horse in the mouth, which is a warning not to expect a gift too closely, and straight from the horse’s mouth, which...
If someone’s getting long in the tooth, it means they’re getting old, or too old for their behavior. The metaphor of long teeth comes from horses. If you look at a horse’s teeth and the extent to which their gums have receded, you can tell pretty...
