When they got to talking so and their mother heard it, she would say, "Now, children!" in such a way that they had to stop. Their father sometimes slapped them with his tail. Teasing is not so very bad, you know, although it is dreadfully silly, but when people begin by teasing they sometimes get to saying things in earnest--even really hateful, mean things. And that was what made the Muskrat father and mother stop it whenever they could.