You know...

When watching television with your wife and witnessing an episode where a man praises his friend's wife too much in front of his own without realizing that he is making a colossal mistake, thereby jeopardizing not only his married life but his general one as well, and then having your wife turn to you and say, "Hey, even you know better than to do that, don't you?", you know that she does not think of you as the most diplomatic man ever to have roamed the planet.