"Are you kidding me right now?" Derek's eyebrows were raised, his eyes bugged. How stupid did Stiles think he was, that he would buy his ridiculous story.
He let out a low, frustrated growl. He couldn't even look at Stiles right now, and at the same time he wanted to march the boy to the shower and scrub him raw so he could mark his skin.
There was something wrong with him. He had a problem. He needed to leave.
"I'm leaving," he said, intelligently. "I'll decide on your punishment later."