Yeah, Sokka had just tried to clamber back up the stairs after having been bored with being downstairs. Bored, bored, bored. And then suddenly, after thinking he might have been okay to walk on his own, he slips and starts falling back. Thud thud thud thud thud thud thud thud...

and then there's this soft cushion below him, holding it up. Like he's looking down, and there's the floor... a few inches below where his body his resting. "Okay Aang... that's not really..."

He turns over to see where in the world Aang is, but Aang's nowhere to be found.

"...funny?"