"Since you're a full blown traitor now and you want me gone, why wait? I'm powerless, you've got your swords… DEWIT," Ozai barked like Palpatine. [Insert obligatory Mark Hamill joke here.]
"Well… if you insist," Zuko said with a shrug, raising his weapons.
The condescending smirk dropped clean off Ozai's face as Zuko prepared to utterly disembowel him. He scrambled to his feet and said, "Wait, you're actually going to—?"
Zuko stabbed him right through his cold, dead heart, immediately terminating his miserable life.
"Yeet," he said, and sheathed his swords. Justice had been served.