Despite himself, a faint smile threatened to spread over his features. "...You learn many things from Dean's choice of entertainment regardless of whether or not you want to," he replied ruefully.
He poured himself another drink, wondering if whether or not he should get one for her as well. Castiel didn't know for sure, but he knew there was something he ought to be doing. It was polite, at least. And she was female, despite being an abomination.
"What were you drinking before?" he asked quietly.