After dinner, the mother and daughter were washing dishes in the kitchen, while the father and son were watching television in the living room. Suddenly, the sound of a breaking plate echoed from the kitchen, followed by a heavy silence. The son looked at his father and said, "It must have been Mom." "How do you know?" "Because she didn't yell."
(Note: We often tend to use different standards for others and ourselves, resulting in being strict with others while being lenient with ourselves.)