When you start reading "sink in" as "skin it"

...then you know something's wrong.

You could be: a) sick; b) extremely sleepy; or c) just plain old fatigued. One could probably add a dozen or so more reasons to the already mentioned, maybe I'm just too lazy (or too sick) to put my brain cells into action.

Either way, I guess it's time to run outside and get some fresh air.

Or, hit the sack and doze off, and this, barely an hour after waking up.

*this post was spurred by my attempt to reread Luis Katigbak's creative nonfiction collection The King of Nothing To Do. "Sink in" appears on the first essay in the book.
=)