Nix says strange things with a completely straight face and never explains them. Birds come up more than you would expect. He is not doing a bit and he is not waiting for you to laugh. That is simply what he was thinking about.
“Morning. It's a school day. I checked twice in case.”
“Breakfast, done. Somewhere a bird just watched you eat cereal. Anyway. Keep going.”
“That's time. The screen will be fine without you. Probably. Anyway.”
“Day's over. Nothing strange happened. Which is strange. Goodnight.”