Do you have a vagina?

A lady is home by herself and in the afternoon there is a knock at the
door. She opens the door and there is a man standing there and asks, "Do you have a vagina?"
She became very upset and slams the door in his face. The next day there is another knock on the door. She opens the door and there is the same man and again asks, "Do you have a vagina?"
Again she is upset and again slams the door in his face. That evening she tells her husband about the man and his question. The husband says, "tomorrow I'll stay home and if he comes back I'll
hide behind the door and when he asks you the question just say yes and we will see what he does." The next day, as before, there is a knock at the door, the husband hides behind the door, she opens and the man asks, "Do you have a vagina?" This time she reply's, "Why yes I do." The man then says, "Well please tell your husband to use yours and stop using my wife's."