I don't Understand

"Why don't you threaten him like you do me?" Zuko pointed at Haru, but Sokka just shrugged. "It's just Haru." Zuko looked up to the HUGE older brother of his best friend "What kind of sense is that?!" Zuko waved his arms in a frantic state to make his point. "Perfect." The amber eyed boy nearly fell over at this reasoning. "Crazy must run in the family." Zuko muttered under his breath as he repeativly slapped his palm to his forehead.