[This is the Barge. It's a legitimate question. Which he tells the creature defensively before he can stop himself.]

It's the Barge, it's not like it would be the first time, you know.

[Then he realizes he's defending himself to a rat and tells himself to knock it off. Drawing back slightly when it stands up - didn't these things start the black plague or something - Dean keeps his eyes on it like it's something he's hunting, turning his head and only flicking his gaze away quickly and then back.]

...don't tell me you're a ghost rat and now you can't get out or someshit.