Seeing as they stand practically eye to eye, the idea of kicking Lucifer in the shins is the last thing on Dean's mind. Really, there's a multitude of other things racing through his head, not wholly defined by their nudity but definitely helped by it. Knees could be aimed, heads could be cracked - oh, the possibilities. And somehow it might be worth it to soothe Dean's fraying ego.

Instead, Dean manages a faint smirk, all before snapping his teeth together in what could be taken as a light heartedly menacing gesture. But maybe not so much when Dean's direction was meant to be down.