"Somewhere in Mathias or something you recognise from back home?" Doc clarifies. Not that it truly matters because he has been marked either way, but the more information they have, the better prepared they can all be for whatever is coming for Dean. Presumably something is coming or there would not be a target on his hand.

"We ought to check in on the others. And your friend Castiel. Maybe they also bear the m-mmm... are you alright?" That was not the reaction that Doc had been expecting. Clearly there had been a lot of drinking involved but beyond that, he wasn't insinuating that anything particularly spectacular had happened last night.