It's rude to hurt close family's feelings with bad behavior.
John's favorite sports team just lost a game, and he sees his wife Mindy and kids in the kitchen eating.
John wants to feel powerful.
John goes to work out in his gym and then goes to a movie with his family.
John tells Mindy and his kids that they eat like animals, and he can't stand them.
Mindy and his kids feel closer to John and love and respect him.
Mindy and his kids resent John and feel more distant from him.