...Uhh, okay? [He's not sure he's following, but he decides it's easier not to ask and gives up with a blink and a puzzled, dismissive toss of his head.]

So, I take it you'd still like me to do your scalp, right? [A tired ache is creeping into his wrists already, though it's nothing a good shaking out can't help, at least a little.] You might actually want to sit up for that. Or turn over, the way you were before. It's up to you.