In its natural state, the child tells the literal truth because it is too naive to think of anything else. Blurting out the complete truth is considered adorable in the young, right smack up to the moment that the child says, 'Mommy, is this the fat lady you can't stand?
Judith MartinEtiquette is about all of human social behavior. Behavior is regulated by law when etiquette breaks down or when the stakes are high - violations of life, limb, property and so on. Barring that, etiquette is a little social contract we make that we will restrain some of our more provocative impulses in return for living more or less harmoniously in a community.
Judith Martinthe obligation to express gratitude deepens with procrastination. The longer you wait, the more effusive must be the thanks.
Judith Martin