A/N: Short but sweet. Sorry for the long delay! I blame a significant lack of Castiel on the show, and the overall depressing-ness of the last season. And also graduating from university.

"This is most unnecessary, Dean," Castiel stated, words thick like honey but still wholly matter-of-fact. "I'm not tired, nor do I require sleep." Dean snorted, eyes never leaving the pillow he was fluffing. It was a motel pillow, better days long past, but a little fluffing went a long way.

"Dude, you almost passed out face-first into your pie at dinner. If I don't set you up the right way now, you'll fall asleep at a weird angle in a lumpy-ass chair and never want to try sleeping again," he stated, tossing the pillow toward Cas. The angel caught it effortlessly and eyed it like it was a fluffy kitten with an extra head, totally enamored with it but still mildly confused.

"Sleeping is a human function that I do not require," the angel reiterated, though he swayed on his feet a little before snapping back to attention. "I will be fine without rest." Dean just raised an eyebrow and started turning down one of the beds.

"Seriously, dude? You're half-asleep as it is. We need you in top form if we wanna stop this whole End of Days business." He glanced up at the angel, whose eyes had involuntarily drifted shut. With a grin curling up the edges of his lips, he finished turning down the bed and went to nudge the guy. Cas' eyes immediately snapped open and met Dean's own pair, lit up with a knowing glint. "C'mon man, you're falling asleep standing. Don't be a stubborn dick."

"But where will you and Sam sleep?" he asked, though his resolve seemed weaker now. "There are only two beds."

"Sammy and I spent more than enough time sharing a bed as kids. The sasquatch can learn to share again for one night." He patted Cas on the shoulder, pushing him gently toward the bed. It was a motel bed, cheap but soft, weathered by decades of use, yet not the worst bed they'd ever spent a night on. Thankfully, Cas took this nudge with only a moment of resistance; he sat down on the edge of the mattress, still clutching his pillow. Dean just nodded approvingly and added, "There we go, just lay on down."

"I've witnessed a great many humans doing this," the angel replied wearily, either from exhaustion or having his will worn down by classic Winchester stubbornness. "You don't need to treat me like a child."

"Yeah yeah, okay all-seeing angel-man, just lay down." Dean ignored the stiff stinkeye he was getting from his angel friend, who nevertheless did as he was told. He positioned the pillow under his head and laid out flat on his back, arms straight at his sides. It looked about as comfortable as sleeping in a coffin. Which, as Dean knew from several unfortunate experiences, was not remotely comfortable, especially if it formerly belonged to the person who pushed you in. Freaking undead.

"Dude, that cannot be comfortable." Cas just bridled at the accusation.

"My comfort is of little importance," the angel replied, shifting awkwardly on the bed. Dean raised his eyebrows, smiling slightly in disbelief.

"Of little importance?" he repeated. "Really? You've been watching humans for thousands of years and you think being comfy doesn't matter?" Cas frowned, but said nothing. At least he was getting too tired to be obstinate anymore. The sooner Cas went to sleep, the sooner he could sleep, and he was really ready to sleep after the day they'd had. "Just relax, Cas. Try not to act like you're ready to be attacked at any moment."

If it was possible, Cas' frown deepened, but his effort to relax was visible. Hell, he even closed his eyes. Dean had to give the guy a little credit; he was trying. Well, now he was trying. Dean couldn't say much for earlier.

"Is this more to your liking?" Cas asked, significantly loosened up. His head lolled slightly to the side, voice becoming thicker as he spoke.

"Yeah, that's better," Dean replied with a smile. "Just give in to the sleep. Resistance is futile."

"I am not a Borg, Dean," the angel murmured sleepily. "I am neither robot nor alie..." Dean smiled, genuinely smiled, and not just because Cas had finally fallen asleep.

"Out of everything, you get the Star Trek reference?" Dean chuckled. "You really must be part of this family."