Despite attempting to wrench his head back out of Lucifer's grip, Dean still maintains his tinge of amusement.. at least until a vivid image pops up into his head.

Kinky fucker.

And not in a particularly good way, Dean left with a resoundingly bad taste in his mouth at the idea. It'd be just one more means of trussing him up, and especially with his hands already behind his back, he's not sure he can stand the idea. Doesn't mean it doesn't still hold its on entertainment value, a weak point in Lucifer's plan. And yet there's a slowly growing appeal to the idea of being the one to make Lucifer quake; Dean's just finding it hard to drop, squirming to get out of Lucifer's hold.