homeless post s5 human!Cas AU on recent chatplay developments

[human_nature]

I don't quite—see. How the comparison is apt. Dean suggested a vacation. In order to . . . find. His place. I suppose. [The process of forming an identity through a road trip is just weird to the ex-angel, but he won't admit that. Fake it till you make it, right?] The scarecrow in the narrative you speak of, however, goes on a quest to find a brain. Dean has a brain. Quite obviously so, as he wouldn't be alive without one.

It is a metaphor? For what? I'm afraid I still don't understand.