Sokka looks at Aang with a rather shocking sense of disbelief. "You know, most normal people just use the door," Sokka answers, but nonetheless he gestures Aang into his apartment. In part, he didn't have much of a choice, but even if he did, Sokka wouldn't have turned Aang away. He likes the kid, and there certainly... seemed to be something on his mind anyway. Besides, sleep would hold out for a little bit, even if that means he'll yawn a little bit more than usual.

"So, what causes you to drop by... or, rather, not drop by?" Since, naturally, Sokka let him in rather than plummet one story downward.