It didn't look like his house.
He stumbled up, only getting caught in the bag three times before gaining enough feeling in his fingers to unzip it enough for him to roll out. He swayed uneasily on the floor, half-expecting it to sweep out under him. He ran into the alarm clock with one foot, "accidentally" flinging it into the wall. It rang a few more times, persistent to the end, before trailing off in the middle of one, as if it finally got the point.
Part of him glanced towards the bed, and he felt nothing short of absolute longing to go there and be with his one true love. The other part of him, the part that usually kept him alive on missions, noticed that the bed was made. He saw the edges of sheets thought long since missing in the Great Crack Beyond the Mattress peaking out of a comforter that was smoothly spread over the top of the bed. Incredulous, he stumbled over, swearing twice as his toes got caught on the flat, level ground. That alone gave him pause, because while the accumulated mess that had served as a carpet for him for more than half his life was, at points, level, it was never smooth.
He glanced down, and were it not for the fact that his jaw felt like it'd been soldered on, he would've screamed. As it was, the attempt came out as "Grmmmgh.". Naruto leaned against the edge of the bed, astonishment slowly pumping enough adrenaline into his system to allow his eyes to open the entire way.
He had hard wood floors.
He found himself frozen completely for a moment, his eyes only seeming to focus on the unnatural gleam and sparkle of the yellow wood. He glanced up just an inch, but an inch was more than he needed for his eyes to focus on the strange, alien-looking table in the center of his apartment.
It was dark brown, and it seemed to audibly shine in a way he hadn't seen since the last time Maito Gai did his "nice guy" pose. It had the same eerie sheen as kunai or shuriken when they were coming straight at him. It wasn't ever a good sign. Gone was the foot deep, familiar mound. Instead, there were straight, orderly piles of papers, envelopes, and, as his feet subconsciously drew him closer, he saw a basket of what could only be wax fruit, because no fruit he'd ever seen had such a polished shine to it.
Everything was clean.
He was clearly in the wrong house. Then again, he reasoned, that was his table, and those had been his pattern of sheets on the bed. It was his apartment, but it was clean. It had to be an alternate dimension. Any moment now, it would turn out that he was the only ninja in Konoha, because the rest of the people he knew were pirates in this dimension. Somehow, the idea of Kakashi wearing an eye patch, a high collared jacket covering his face, with a rapier at his side seemed to fit way too easily. The rest of the scene came together easily. Sakura might have pretended to be a boy, except that everyone saw her pink hair and just humored her. Sasuke would be a broody, bad-tempered son of a (and he searched for an equivalent to the big clans in Konoha) Navy captain, but ran away with pirates anyway.
"But, how can I be a pirate?," he found his mouth mumbling while his mind strained to catch up, "I have two legs and I don't have a parrot."