Scene: The library where I work. It's my morning break, and I'm using it to return a book that's due today. No more renewals allowed, so I managed to do what I normally can't and finished the book the night before (I have trouble reading books I don't own. But that's a story of another time). I come up to the lending desk, smiling and humming.
Woman behind Desk Who I Know Slightly: Good morning.
Me (singing out): Morning!
WbDWIKS: You are entirely too cheerful for 10 AM on a Monday.
Me: Oh, that's caffeine. Nothing natural about this. All caffeine. (pausing for a second to think) And sugar.
WbDWIKS (laughs): Well, that's all right then.