Bob: How'd you like to go for a drive? See a movie?
Nancy: Fine! When?
Bob: Now. Tonight.
Nancy: Well, what's come over you?
Bob: I don't know. I just felt like getting out. (gets defensive) Well, it's a perfectly normal, middle-class impulse! Is there anything wrong with that?
Nancy: No, but I've never known you to have impulses, middle-class or otherwise!