Title: The Great Washout In the post-apocalyptic world of Z Nation, where the undead are as common as dirt and hygiene is a luxury, our heroes 10K and Citizen Z find themselves on a treacherous but oddly humorous scavenging run in the ruins of what was once a bustling city center but now looked more like Mother Nature's garage sale. "Socks, five pairs for a can of Spam! Anyone?" joked Citizen Z as they tip-toed past a rotting kiosk with an almost-intact sign that read "Everything Must Go!" 10K, with his eagle-eyed focus, didn't miss a beat. "I'll raise you two cans if you find me some decent ammo," he responded, scanning rooftops for errant Zs who might have taken up sniping as a post-mortem hobby. The duo weaved through the debris with all the grace of a bulldozer ballet, grabbing what supplies they could find. 10K efficiently stacked cans of food into his backpack like he was auditioning for a survivalist version of Tetris. Meanwhile, Citizen Z wrestled with a stubborn box of flare guns, inadvertently setting one off and painting the sky with emergency red. The flare's light caught their attention to a sight oddly magnificent - an outdoor shower, still miraculously intact amidst the chaos, its silver head gleaming like a beacon of hope for personal hygiene. 10K's eyes lit up with joy. "Dude! It's been ages since my last shower. The grime has its own grime." Citizen Z knocked on the metal pole, "You trust this contraption not to spout acid or something?" "I'll take my chances," 10K replied with devil-may-care enthusiasm. He began undressing right then and there, peeling off his zombie-slaying layers like an onion shedding its skin, each piece of clothing discarded with a flair of comedic theatrics. When he got to his pants, he kicked them off with an acrobatic flick that would put a Rockette to shame. There he stood, in all his au naturel glory, the water cascading over him as he scrubbed the grim accumulated from countless undead encounters. The droplets glistened on his athletic physique, tracing the contours of muscles earned through relentless running, climbing, and good old-fashioned zombie-beating. Even in the apocalypse, 10K managed to make survival look like an extreme sport. And then, there was his butt. If there were a contest for "Post-Apocalyptic Peach of the Year," 10K would've been the uncontested champion. It was as if Michelangelo had risen from his grave, seen 10K, and thought, "Let's make a sequel to David." Citizen Z, having initially turned away out of courtesy, now couldn't resist a peek. His eyes popped like he'd just witnessed the birth of Venus. "Well, I'll be darned," he muttered. "The apocalypse has its perks." 10K, feeling sprightly and invigorated from the water's embrace, called out, "How do I look? More human, less zombie?" Citizen Z snorted, "You look like one of those Greek statues--only, you know, less stone, more... cheeky." "I'll take that as a compliment," laughed 10K, striking a mock-heroic pose under the showerhead, which elicited an eye roll and a chuckle from Citizen Z. As 10K finished up, he sheepishly realized that he had tossed his clothes far and wide in his pre-shower exuberance. He roamed around naked, picking them up, while Citizen Z averted his eyes, pretending to be engrossed in sorting through their scavenging haul. "Next time, how about a warning?" grumbled Citizen Z, trying to maintain some decorum. "What, and miss that priceless look on your face? Not a chance," grinned 10K as he slipped back into his slightly less grime-covered garb. Together, and significantly fresher, they marched on to their next adventure, aware that in Z Nation, even a simple shower could be a matter of life and cheek.

As 10K finished rounding up his scattered attire and began to redress, he couldn't help but notice Citizen Z's determined study of the horizon each time he glanced his way. With the devilish grin of someone who has just showered for the first time in months, he poked fun at his comrade's apparent shyness. "Hey, Z," 10K called out, pulling on his slightly damp shirt. "Why do you keep looking away? It's nothing you haven't seen before; locker rooms existed before Zona, you know." Citizen Z, who had made a show of inspecting a nearby flooded basement, cleared his throat awkwardly as he fidgeted with his make-shift radio-earpiece combo. "Oh, you know, just trying to respect your... uh... privacy," he managed, still not quite meeting 10K's eyes. 10K laughed, a genuine, full-hearted sound that echoed around the empty, wrecked streets like a reminder of life before zombies. "Privacy? That's a thing of the past, buddy. Besides, we're practically brothers in arms. I mean, we've fought Zs, we've shared canned beans, we've..." He trailed off, his smirk widening as Citizen Z finally gave in and met his gaze, a reluctant smile tugging at the corners of his own mouth. Citizen Z shrugged, his hands going up in a mock surrender. "Alright, fine, you got me. I just... it's not every day you see someone brave enough to embrace nature in... such a natural state, especially when a Z could pop out of any corner ready for a snack." "Are you implying my naked butt could be the ultimate Z bait?" 10K quipped, arching an eyebrow, all traces of moisture now drying on his sun-kissed skin. "Could be," Citizen Z deadpanned. "I mean, it is... impressively... distracting." A genuine laugh escaped 10K, one that seemed so out of place in their grim surroundings, yet so necessary for their sanity. "Well, next time we find a shower, it's your turn. I'll be sure to keep watch. Directly." Citizen Z's cheeks flushed with the hint of a blush, a feat that under any other circumstances would've been a clear victory for 10K. But, as it stood, the embarrassment was mutual, and that somehow made it all the more hilarious. "You have no idea how much I dread that moment already," Citizen Z sighed, but the sparkle in his eye was unmistakable. With their banter lighting the gloomy day, they packed the last of their scavenged supplies--now including a bar of soap 10K had found lodged in the shower's caddy--and headed back towards Camp Northern Light. As they walked, the tensions of their scavenging run eased into laughter and friendly jabs about each other's scavenging 'techniques.' The apocalypse might have stripped away the world's niceties, but it could never wash away their camaraderie, as solid as the physique 10K was shamelessly confident about, and rightfully so.