A/N This song comes from Muppet Treasure Island, and is possibly my favorite scene in any movie ever. If you notice a plot inconsistency with what they can hear, don't worry, I have a plan for that.
Hope you like it!
"You tricked me!" shouted Zuko. "I didn't really mean it!"
"I did not!" retorted Aang. "You said it all by yourself!"
"No!" exclaimed Zuko. "You were asking questions that all had 'yes' answers just so that I'd answer yes to that!"
"You wouldn't have answered yes if you hadn't really thought it was fun!" cried Aang
"Obviously, I would, because I did, and I don't."
There was a pause. And then another pause. Finally Aang asked, "What?"
"Oh, never mind!"
Before their argument could progress to an even worse level, Bumi jumped in.
"I've got cabin fever!" he screamed loud enough that they heard it through walls.
"I've got it too!" yelled Iroh equally as loud.
Sokka banged on the walls like a drum, and the song began completely spontaneously.
"I got cabin fever,
It's burning in my brain," sang Iroh.
"I got cabin fever,
It's driving me insane," replied Bumi.
"We've got cabin fever we're flipping our bandanas," sang everyone at once.
"We're stuck at sea so long that we have simply gone bananas," maybe that didn't make much sense for the situation, but remember, they had cabin fever. One of the most common symptoms is delusional attitudes. Or whatever.
"We've got cabin fever, we've lost what sense we had," sang Sokka.
"We've got cabin fever we're all going mad!" added Katara.
"Grab yer partners by the ears,
Lash 'em to the wheel," added Zuko suddenly.
"Do-se-do step on their toes,
Listen to them squeal!" put in Aang happily.
"Hold them left, hold them right,
It's time to sail our sea," sang Iroh with his usual nonsensical…. whatever.
"Swing yer partner over the side
And drop 'em in the drink!" finished Bumi, making no more sense than Iroh.
"We've got cabin fever,
No ifs, ands or buts," wailed Sokka.
"We're disoriented, and demented,
And a little nuts!" elaborated Katara.
"We were sailing, sailing,
The wind was on our side," sang everyone at once.
"... But then it died," Zuko put in morbidly.
"I've got cabin fever,
I think I lost my grip," Aang yodeled. Well, not literally, but you get the picture.
"I'd like to get my hands on,
Whoever wrote this script!" Iroh replied, making no more sense than usual.
"Say, I, was floating in a tropic moon," sang Bumi randomly.
"I'm dreaming of a blue lagoon," that was Sokka. As usual for this song, making no sense whatsoever.
"Now I is crazier than a loon," sang Katara. And she didn't make any sense, either.
"Cabin fever has grabbed us all aboard," Aang announced.
"This once fine vessel has become a floating psyco ward," somehow, Zuko managed to grumble and sing at the same time.
"We were sailing, sailing," everyone sang together.
"Heading God knows where!
And now though we're all here,
We're not all there!
Cabin fever, aah," they finished.
There was another long, long, long pause.
"Shat ahp een thar," exclaimed a pirate.
"What?" called Iroh."
"He said, shut up in there," translated Zuko.
"But we've got cabin fever," whined Aang. "We can't help it.
"We've got cabin fever," sang everyone suddenly.
"We're flipping our bandanas.
We're stuck at sea so long that we have simply gone bananas.
We've got cabin fever, we've lost what sense we had.
We've got cabin fever, we're all going mad!"
The pirate shook his head, although they couldn't see him.
"This once fine vessel has become a floating psyco ward," he muttered.
"Wait… we're on a vessel?" asked Sokka.
"Shut up, or I'll set the flying llamas on you."
There was a pause. "Well, that was random," commented Katara finally.