Brain: Oh look, a library!

Me: We don't need to go to the library.

Brain: But they have books! We could get some!

Me: We already have books.

Brain: Yes but those are the ones we already have. We could get books we don't already have.

Me: You haven't even read all the ones we have yet.

Brain: What does that have to do with it?

Me: Look. We're NOT getting a book.

Brain: Yeah. Just wait and see what I lose just before you have to go to work.