Crowley had to admit, it was dangerous. For both of them, actually. Given Winchester's reaction to demon blood, and while that was linked to the whole Azazel crap, Crowley wasn't sure what affect demon blood would have on just anyone. And, technically, draining a demon's host of all it's blood wasn't great for the demon either. "Ah, but isn't the danger half the fun?" Crowley couldn't resist the smirk. "And fair point, darling, but counter one from me. If you're hungry but don't want to kill someone?" A flick from his hand and the table moved half way across the room. "I do have ways of making you stop that a human wouldn't." Telekinesis, one of a demon's more useful powers.
"I do definitely approve of playing." The smirk grew as he took the offered wrist, a hungry look in his eyes before he drank deeply, relishing in the taste of the rich blood, alternating between sucking harshly and lapping at Kol's wrist with his tongue. And he did have to make himself remember to stop, letting go with a grin.
"I wonder what would actually happen if I did die now," his tone was so incredibly light and casual, actually lit up with curiosity. "I mean, you could do something to kill this lovely body I'm wearing, but would what I am just keep the corpse going, or would it become a vampire? Would I be a demon vampire? Because that could be fun." Oh the possibilities! Probably bad ones. "And, well, if I was permanently dispatched with, with the Colt or Ruby's knife, I very much doubt any blood would make any difference, sorry to say." Which was one reason to keep on Ruby's good side.