Clint: "There are two kinds of people in the world, those with loaded guns, and those who dig...you dig."
The Duke: :"That'll be the day."
Two shots ring out at the same time. Clint's pistol screams and The Duke's thunders. Both men are hit, but too stubborn to be injured. They nod in respect and walk in opposite directions.
To overcome their respective embarrassments of being shot: The Duke pours whiskey on the wound, starts a barfight, and eliminates an entire Indian tribe. Clint sits down at the piano and scores another moody art-house film.