Well, it's not like anyone is really watching. Plus they're wearing masks, not that they're very effective. And there's no one there, anymore, that could ever tell them they shouldn't do it, or get them in trouble for it. And that grin on Crowley's face, their intoxicating charm, overriding even the lower quality of the party...

"Oh, fine." He finally consents, but not before finishing his drink and putting his glass away. " I suppose one dance won't hurt."