With the strap across his head his head barely moved at the slap, but he half-conciously bared his teeth and his hands curled in response. Were he able to move, he'd have struck back. He briefly considered keeping his eyes closed out of spite, but there's almost always a part of him that remains calmly objective and disconnected, and that part of him knows that he should choose his battles. Despite the lingering stinging and burning, he opens his eyes.