When Queen Elizabeth and Duke of Edingburgh visited a cattle fair, Queen asked the guide "How often does the mating bull perform?" The guide answered "Six times a day, Your Majesty," whereupon Queen ordered the guide "Inform my husband of this fact." When the guide told Duke about this incident, Duke asked the guide "Does the bull perform on the same cow?" The guide answered "No, sir, the cow is different each time," whereupon Duke ordered the guide "Inform my wife of this fact."