[This is the face of someone who is entirely unconvinced. And now that he has a target in his sights, he's going to pursue it.]

"...Uh huh. You were reprimanding me in the gentlest voice I've ever heard. Don't suppose you're going to start doing that when you're awake?"

[Wry as his expression is, his voice is oddly hushed and gentle. And seems to be determined to match what he's just heard.]