Part of the reason this is non-canon was that I just couldn't figure out a good reason for Zuko to be drunk. Maybe it's his daughter's second birthday, and he's stuck at sea and convincing himself that he's a terribe father?

That's actually Kyoshi's utterly failed attempt at being maternal. She's 230. To her, everybody under 40 looks like a baby. If I could figure out how to fit it in, Kyoshi trying to mother someone and being mistaken for coming onto them would be a running joke.