"You're already clean," Stiles pointed out after moment as he frowned because he knew there had been something wrong with Derek's sentence. "Can't clean if already clean." The slave was to tired to be proud of his thought and it completely left his mind when Derek started to rub down his shoulders and back. Any soreness he was feeling disappeared to leaving Stiles in a sleepy bliss. It caused him to moan softly and his hand moved to rest on Derek's thigh.