Deans steps out of the way before that punch can make contact, fully expecting Sam to wake up swinging.

"'Bout thirty minutes," Dean tells him.

But that isn't the important part of this conversation.

"You wanna talk about how you're having tea time with the devil in your head?"

Because Dean wants to talk about it. Right now, it's clear, from the way he folds his arms, pistol still in hand, and tilts his head, waiting for Sam to explain.