eat my dust

Eat my dust is a way to show a competitor you have won and somewhat of a mockery of the fact that they lost. It is a phrase often spoken to a rival after you beat them in something, such as in a sport, game or other type of competition or activity. It is somewhat of an in-your-face type of mockery in which you will stand up to your opponent after you have won, and tell them eat your dust as you face them and stand closely to them.