Pairing: Castiel/Dean preferred, but gen works too
Rating: Preferably towards NC-17, but really, any
Situation: Someone (I don't care who, but it can't be Cas), realizes that as angels' names typically translate from the Hebrew to the "_____" of God, and does some research on Castiel's name. They come up with three possibilities based on their search*: "down comforter", "inkwell," and "decoration," and inform Dean of this. Continue as seems reasonable.
*Note: yes, I speak Hebrew and searched my dictionaries, these were, in fact, the three possibilities I came up with.