The only occasion when the traditions of courtesy permit a hostess to help herself before a woman guest is when she has reason to believe the food is poisoned.
Emily PostChildren are all more or less little monkeys in that they imitate everything they see. If their mother treats them exactly as she does her visitors they in turn play "visitor" to perfection. Nothing hurts the feelings of children more than not being allowed to behave like grown persons when they think they are able.
Emily PostManners are made up of trivialities of deportment which can be easily learned if one does not happen to know them.
Emily Post