*All in my head watching this
Zuko :[Teasing Katara to get her attention] WATER WHIP!!!
Katara : [Full annoyed strike him with bunch of water]
Zuko : [Soaking wet] I'm kidding!
Zuko: Katara, I know you're going to kill this speech and help get this legislation passed.
Katara, nervous and panicky: You say that because you love me. And love has made you dumb!
Zuko: No, love has made me better in every way. Remember last week, when I made small talk?
Katara: That was big. I was really proud of you.
Zuko (chained up and surrounded by men who want him very dead): Gentlemen! Gentlemen! Let's be civil about this! Let's make a deal. You surrender, and you don't die. How does that sound?
men who want Zuko very dead (laughing at the super chained up Zuko): And how you intend to kill us?
Zuko: Oh no, I can't kill you. But my wifey can! Say hi, wifey!
Katara (full of murderous intent and stepping out into the light of the full moon): ...Hi.
Zuko: * Holding their baby *
Zuko: Katara! I think the baby's hungry
Katara, from another room: How do you know?
Zuko: Because he's digging his face into my chest and getting fussy because he's not finding anything
Azula, after the fall of Ba Sing Se: I almost thought you were going to betray me for the Avatar's little ragtag team.
Zuko: No way. I mean, the Avatar is an immature child, the Water Tribe boy is a buffoon, and the little earthbender is a menace. And Katara—
Azula: Um. "Katara?"
Zuko: Katara's just the worst. The worst! She thinks she's so smart and good at bending. And so pretty. And for a moment there, she made me feel better about the world and my place in it. Ugh!
Azula: ...