Disclaimer: I do not own Naruto or these characters: I just enjoy taking the wonderful characters Masashi Kishimoto made and making them have very complex love lives. Hope you enjoy it, too!

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Kakashi put a hand to his aching head, feeling like it had been split in half with an axe. He vaguely registered the brightness outside of his eyelids, and was reluctant to open them, knowing that it would seem like hell on earth. Holding his head to try to steady it, he slowly shifted in the bed, immediately recognizing that the bed he was laying in was not his, and that he was naked in it. He felt a presence next to him, and assumed that he must have met a girl at the bar last night, though he didn't remember anything after the sake-drinking contest with Gai. Damn that spandex-suited man and his unusual challenges.

He reluctantly cracked on eye open to try to get a look at the girl he had gone home with, only to see that her figure was very masculine, her broad shoulders tapering to a flat chest and… fuck. His eye flew open completely as he looked up to confirm what he already knew: he was naked in bed with Gai, who was naked at least from the waist up.

He tried to take deep breaths, to calm himself down. There had to be a good explanation for this. After all, it wouldn't be the first time he had woken up naked in a strange place after a night of heavy drinking, and that had just been him being drunk. That had to be it. He sharply nudged the man next to him, hissing the ninja's name angrily through his teeth. Gai stirred, seeing Kakashi next to him and shooting the silver-haired ninja a confused look.

"…Kashi?" he yawned. He sat up and looked around. "What are you doing in my bed?"

"That's what I was hoping you'd know," Kakashi said, sitting up as well and freezing at the sudden motion. Oh, no. Not good. He tried to calm himself, but he was starting to piece the puzzle together, and he wasn't liking the final picture. "Gai… what do you remember about last night?" he asked, quietly and slowly, trying to avoid moving more than necessary.

"Well… I remember the sake-drinking contest… and I won!" Gai exclaimed, giving his classic nice-guy pose in sitting form. As he did so, he frowned at his midsection, recognizing an unfamiliar feeling at his movement. "Huh… I usually don't sleep naked."

Kakashi put his head in his hands. This could not be happening. "Nonononononono, this isn't happening… it's a bad dream… I just need to wake up," he rationalized. Suddenly, he jolted forward, gripping hard onto Gai's forearm with a manic look in his eyes. "Gai, punch me in the face!"

Gai, as unperceptive about social situations as usual, looked alarmed at Kakashi's request, and his seeming (hopefully temporary) insanity. "What?! No!"

"Gai, just do it! I need to wake up! Right now!"

"Kakashi… I don't think this is a dream," Gai said slowly, his face full of concern for his rival.

"Fuck, fuck, fuckfuckFUCK!" Kakashi shouted, his hands balling into fists at his sides.

"Kakashi, what's wrong?" Gai asked, perplexed.

"You don't remember anything about last night, do you?" Kakashi asked, anger and something else that Gai couldn't read on his face.

"After the sake-drinking contest, not really, no."

Kakashi's head dropped back into his hands. "Oh, God…"

"Kakashi, maybe we should get up… Come on, I'll get you something for your head." Gai made to throw the blankets off himself and stand, seemingly unbothered by his nudity. Then again, Gai had always been a little more comfortable with his body and his way of life than anyone would like, so that wasn't really a surprise. Kakashi had already seen Gai naked on more than one occasion.

"I can't," Kakashi said quietly.

Gai chuckled lightly. "I think you mean you won't," he teased. "Come on, hangovers aren't that bad. I'm sure you've had worse."

Kakashi just sat there, staring at the blankets in front of him blankly. Gai went to reach for his friend, to shake him out of his stupor or help him up or something; even he didn't know what his exact intention was, but this attitude was not usual for his friend, and it was causing him concern. His fingers just brushed the man's shoulder gently, but he jumped away like he had been shocked, hissing in pain at the sudden movement. Gai noticed that he was moving strangely, and it didn't seem as if a headache was his problem.

He was now deeply concerned. Had he injured Kakashi in his sleep? It wouldn't be the first time he had tried to sleep-fight someone, and they had come out on the wrong end of the deal. "Kakashi, tell me what's wrong this instant," he said, his voice deep and authoritative. Kakashi looked up at him, his eyes still full of that unreadable emotion.

"Gai, try to remember last night… I really don't want to have to explain it to you… please," Kakashi pleaded. Gai raised his large eyebrows. Kakashi, pleading? This MUST be serious. His brows furrowed together as he closed his eyes, trying to remember last night. He recalled the bar, the shots, so many shots. Then they were leaving the bar, him and Kakashi leaning against each other's shoulders for less-than-effective drunken support. They had fallen into a fence, laughing as they looked to each other, and their eyes had locked, and… Oh, God.

Crashing lips, dueling tongues, their hands each tearing at the other's clothes until they reached the heated skin beneath. Hands tangling through silver hair, head bobbing, a quiet gasp… Muffled moans and cries of passion, sweat-slick skin sliding over the other's body as he thrust himself deep inside, crying out at his completion.

Oh, God! Gai stumbled away from the silver-haired man with a gasp as the memories came rushing back.

"Do you remember now?" Kakashi asked the older jonin quietly, staring at his hands clasped over the white sheets where they dipped slightly between his thighs. Gai looked at Kakashi, instantly recognizing now that emotion that Kakashi's eyes had held earlier: the same horror that he was sure was now mirrored in his own.

"No, no… we didn't… we couldn't have…"

"We did," Kakashi said hollowly, not looking at his friend.

"But… but why would we…" Gai stuttered. He was confused, and for some reason, his heart was fluttering nervously.

"I have no idea…" Kakashi mumbled, finally looking up to Gai, but quickly averting his eyes and throwing up a hand to block the sight with a groan. "For the love of God, will you put on some pants?!"

Gai jumped back out of his thoughts, looking down at his naked form. He had forgotten about that… A blush flared to life easily in his cheeks as he rummaged in his drawers before pulling on a pair of clean boxers and a clean spandex suit. Now dressed, he sat back on the edge of his bed with his head in his hands, elbows resting on his knees. He felt the sheets brush his back as Kakashi threw them off himself and scrambled out of his bed, quickly locating his clothes on the floor and pulling them on. Gai heard hisses of discomfort as the ninja's quick movements exacerbated his… condition.

He heard his friend cross to the door, and chanced a glance at the ninja. "What are we going to do about this?" he asked his friend quietly.

Kakashi froze with his hand on the doorknob. "Nothing. This never happened," he hissed through his teeth before wrenching the door open and storming out of Gai's apartment, trying hard to hide his slight limp.

When he was gone, Gai flopped onto his back on the bed, his hand coming up to cover his eyes. What was supposed to happen now?