Derek kept hitting him, although the smacks were not as harsh as the third one has been. But even so they would hurt. When he landed the tenth, he paused for a moment, for give the boy a break and to enjoy the smell. Stiles was turned on. Even if he said he didn't like to be spanked he was still turned on.
"That was ten, Stiles." He said, stroking his side. "You have ten more to come, then you can lay down and rest." Even if he punished the boy he would continue to punish him afterwards. He would rub some balm on and then maybe the boy would talk to him. He started up again, his hand rotating from cheek to cheek. The blows were not at all harsh, but to his redden skin, Stiles would probably think so.