Sometimes you mean what you say.
Sometimes you don't.
Jon and Juliet discuss messages and metamessages and some of the ideas from Deborah Tannen's That's Not What I Meant!: How Conversational Style Makes or Breaks Relationships. (Amazon link)
They recite a few lines from Jules Feiffer’s play Grown Ups.
Jake: Look, I don’t care if it’s important or not, when a kid calls its mother the mother should answer.
Louise: Now I’m a bad mother.
Jake: I didn’t say that.
Louise: It’s in your stare.
Jake: Is that another thing you know? My stare?