Stiles laughed. He threw his head back and laughed at Derek's words. "You think you're going to train me? Break me? Right," Stiles said with a snort and a mocking grin on his lips. "You won't be the first person to tell me that and then give up. You'll give up before I break." Stiles sounded smug and he felt it too. He had broken four other masters and he planned on breaking Derek.