I have read many books and watched many movies, and I just thought of a specific retort that a character made, possibly in the Harry Potter movies (I want to say this was Dumbledore), to being bid "Good morning" or "Good day":
Basically, it was very roughly along the lines of "Are you wishing that I will have a good morning, or are you stating that I should have a good morning whether I like it or not?"
I would almost have to re-watch all of the HP movies to find this, and even then, I could be wrong about the context.
Does anyone happen to remember this discussion in any of the movies?
Maybe it isn't even in Harry Potter. Its exact form, character, and story has escaped my figuring for the past few days, so I thought I might have some luck here, with the experts!