The Cistern: Part 6
#33 of Transformation Stories
The Finale to my watersports filled rat fest
Toilet was nervous, it was his last day in the Cistern, tomorrow morning they'd be turning him back into a mouse and letting him go. Their days of filthy debauchery over. Last night had been amazing, stuck in that pit with his master, being soaked continuously with warm piss as they were forced to drink the liquid flowing down from above.
Toilet had lost count of how many times he had both had to relieve himself all over them both and shot his load. Each orgasm had been intense and whilst he was still hanging there, basking in the afterglow his body had started preparing the next load in a slowly increasing wave of pleasure. He wasn't sure if it was some quirk of biology coded into this rat body or something in the piss they had been drinking. He never usually went from orgasm to needing to cum again so quickly! It had been an amazing night though and he'd slept like a log once they had finally flopped into the nest.
Now though he was clean, full of food and had napped most of the afternoon away. As it was his last day apparently there was to be a special event but his Master wouldn't give him any clues as to what! Sewer stepped out of the nest, one hand stroking his long golden goatee, he grinned at Toilet and walked over and leant down to kiss the smaller rat. Toilet kissed him back happily, letting their tongues tangle as the bigger rat ran his claws through the rat's head fur. Once the kiss came to an end Sewer stepped back and ran a hand around Toilet's neck, adjusting his black collar before trailing his fingers down his pet's chest.
"Ready to get started with tonight's fun?" Sewer asked with a grin, "We have something fun and different planned, a special VIP event, are you ready?"
"Yes Master," Toilet said with a squeak, "I ... am really excited."
"I can see," Sewer reached down and tweaked the rat's cock where it was peeking out of his sheath then moved toward the gear alcove, "Come along pet, let's get ready."
Sewer pulled a box aside, revealing a hand-scanner, like the one in the shower room. It beeped as it accepted the big blonde rat's hand then the wall slid open and Toilet hurried after his master to see what was waiting for them. It was a small room like the tank had been, but the floor was a mesh grill set in a metal frame with a whole variety of straps and chains, clips and restraints built into it. Toilet soon found himself down on his knees, with his anklets being chained in place. His hands went down beside him, clipped to the grill.
Sewer knelt behind Toilet, with his back to the smaller rat and clipped his own anklets down. They both had extra restraints around the knees as well holding their legs apart and tight down to the ground. The main difference was Sewer's hands were kept free giving him a bit more freedom as he leant his head back against Toilet's.
"This will be fun," Sewer rumbled as with a jerk the floor started to move! It ascended slowly up a shaft of concrete and above them a metal panel clanked open lifting the pair of naked rats up out of the cistern.
The room they emerged into was a small bathroom, stall, sinks, mirrors but their piece of mesh flooring fitted squarely into a sunken frame where the urinals should be. Everything was clean and tidy but the pair of rats were chained down to the floor, both naked, on display and ready to be used in person!
"I... I thought we didn't leave the cistern," Toilet said, he could feel the blush spreading up his ears, his cock was starting to peek out of his sheath.
"We haven't" Sewer murmured, "This bathroom is part of the Cistern complex, only way in here is if you have a VIP key," the bigger rat shifted and grinned over his shoulder at his pet, "For the next few hours, each of our VIPs gets to let themselves in and avail themselves of the sewer rats."
Toilet squeaked, blushing heavily and squirming, his cock was right out of its sheath now and he gasped as the door clicked open and a large bull walked in. He was huge, with hooves the size of dinner plates, dark shaggy brown fur dressed in tight, brightly coloured lycra leggings and nothing else. His muzzle had a lighter shading around the jawline that blended into his light brown hair and his deep brown eyes focussed on the pair of rats and he smiled eagerly.
The bull was followed by a blue furred sabretooth tiger, wearing a pair of tight lycra shorts which showed off his muscular frame and the lighter stripes along the sides of his body. He had no visible tail to see but he was broad of shoulder and had the sort of heavy set frame that was mostly muscle in that languid feline way. His bright green eyes seemed to glow in the bathroom lights and he was smiling excitedly, his hair a shaggy mess of different shades of blue fur.
The pair paused just inside the door, looking at the pair of rats and Sewer squeaked. He'd made it clear they were not supposed to start conversations with the VIPs, they were here to be toilet rats. The bull clomped over, pulled down the waistband of his tights, pulling out a very thick dick. He pulled back his sheath exposing his head and his sabretoothed friend joined him, pulling his own dick out of his shorts. After a moment the pair grunted in relief and let loose a stream of piss that splashed over both of them. It was warm and Toilet squeaked as it soaked into his fur, leaving him blushing and he watched as the big bull and tiger enjoyed themselves, the pair starting to make out for a moment as they soaked the rats in piss. After a moment however they broke off their make out session and split up. The bull walked around, still letting his stream flow and presented himself to Sewer whilst the tiger offered Toilet his cock.
Without hesitation both blonde sewer rats wrapped their lips around those cock and started drinking. It was warm and potent and Toilet groaned as he took more of that dick into his muzzle and gulped, swallowing their piss. As the stream lessened he started to suck on that sleek, smooth, hardening feline cock. The tiger let out a low, happy rumbling purr, reaching down to grip Toilet's ears and started to hump his muzzle as that thick dick finished growing and started to leak pre.
Toilet didn't mind, he was here to serve, he started to suck, to lick, to worship that cock, enjoying the salty taste as an alternative to piss. His VIP guest grunted and started to thrust his hips, drawing his cock out to Toilet's lips, then pushing it back in, plunging the tip into his throat. From the happy squeaking sounds and deep rumbling purr coming from behind him the big bull was enjoying Sewer in a similar fashion. Toilet squeaked and ran his tongue up the bottom of that cock, teasing it lovingly, wanting to bring his guest to orgasm and earn another drink.
The tiger grunted and groaned in delight as he rolled his hips, fucking the rat's muzzle. Toilet was enjoying himself, after nearly a week of just worshipping Sewer's cock it was nice to have some variety! He squeaked, tugging at his chains, wishing his hands were free so he could paw himself off! He bet Sewer was back there doing just that. But here he was, trapped, stuck, unable to paw only worship the thick feline cock sliding in and out of his muzzle. It took several more minutes but he was rewarded for his attention, the muscular feline emitted a deep, happy groan and his cock pulsed, firing thick, sticky cream into Toilet's muzzle.
The sewer rat let it fill his mouth before starting to swallow. The cat had a lot to give and only once he was done firing and Toilet had slurped his cock clean did he pull back. The tiger nodded and ruffled the smaller sewer rat's head fur then pulled his shorts back up and joined the bull at the sink. After they had cleaned up they slipped back out and Toilet squeaked and leant back against Sewer.
"Oh damn... that was... that was hot! Is... is this going to happen all night?"
"Yes," Sewer said with a grin, "We are urinals and our VIPs are going to make good use of us."
"I wish I could paw off," Toilet squirmed and his chains clinked, "This is cruel, leaving me unable to paw."
"Mmhmm," Sewer rumbled then Toilet felt him shift and move his arms and chains clinked, "I'm in the same boat as you, our bull guest tied me down, last guest of the evening will untie me before we are lowered back to the cistern."
"Oh hell..." Toilet whimpered, "Do we get to cum at all?"
"Not until we are back in the Cistern and we perform our grand finale, now shush rat, our next VIPs are arriving."
Toilet fell silent and bit his lip, blushing furiously, looking toward the door as it swung open. Their guests this time were a pair of hyenas, their tall, broad, tawny furred bodies both sporting very large black, sheathless cocks. Neither was wearing a stitch, letting their shafts hang out and they approached, both of them smirking, clearly intending to make good use of the sewer rats! It was going to be a hell of an evening and Toilet was looking forward to the whole thing!
-0-
In total they wound up serving ten VIPs over the course of several hours, Toilet loved each and every one of them. He was soaked in piss, left dripping wet and rock hard with pre oozing down the length of his cock to drip off his balls for hours. No one had touched his dick, clearly they had orders not too and he stank of piss, fur soaked, his bladder full and groaning in need for release by the end. As the elevator carried them back down to the Cistern he was given permission to go and with a squeaking blush he let go and fired a stream of bright yellow piss into the air from his rock hard dick. It splashed into the concrete walls and dripped down through the mesh floor they were tied to, no doubt being caught on camera. It was humiliating, even now after several days like this to know he was being filmed, his every dirty, filthy act recorded or streamed live to the crowds upstairs.
Once they were back down in the cistern Sewer removed the restraints from their legs and led Toilet back out into the main room. The mesh floor had been retracted, the drain had clearly been closed and the sloping basin was now full of fresh, warm, musky smelling piss! Sewer waded straight into it, turning, his thick cock standing proud and needy before him beneath the surface as he looked at Toilet.
Toilet didn't hesitate, he dove in, throwing himself forward, plunging his whole body beneath the surface and swam over to grip the edge. Piss started to pour from above as Sewer waded over, gripped Toilet's shoulders and started to sink his thick, needy cock into his rump. Both of them squeaked in unison, bodies starting to buck together, piss splashing all around them. Sewer gave him permission to paw and he did as he released the edge and let their joined bodies sink beneath the surface.
Sewer held them down, his hips thrusting wildly, eagerly, ploughing in and out of Toilet's rump as the smaller rat eagerly pawed his cock. Sewer pinned him to the side of the drain, Toilet's paw flew up and down the length of his rock hard cock needily, he was not going to last long after being teased all night. After a few moments he started to cum! His rump clenching tight pushed Sewer over the edge. The bigger rat pushed off, carrying them both up, heads breaching the surface so they could breath. Sewer held Toilet close, keeping his dick lodged deep in the rat's rump as he rode out his orgasm flooding Toilet's rump with seed.
After that they just floated for a time in the drain full of piss, swimming around like the sewer rats they were. In the end though Sewer ordered them out and the plug opened draining the pit as the mesh floor rolled back into place. The night was over, Toilet's five days as a sewer rat were coming to a close. After a long, enjoyable, warm shower the pair of rats fell asleep, curled up around each other in the nest.
-0-
Sat on the bench in the locker room Trevor pulled his trainers on, lacing them up slowly. He was a mouse again, he'd woken up as himself in the arms of Sewer that morning. He'd showered, cleaned up and was now getting dressed as his Master.... Orel got cleaned up too.
He had just finished his shoes and was pulling his personal belongings out of the locker when the brown rat walked out of the shower room. His fur was dry and he started to pull a comb through his thick brown hair. He tossed a grin at Trevor and opened his own locker, starting to pull on clothing.
"So did you have fun?" Orel asked, sliding into a wrestling singlet that he seemed to prefer to wear instead of underwear. Next was a pair of long black shorts, a grey t-shirt and he tapped his orange collar and it shimmered, cloaking itself as as black, purple and silver necklace.
Folding his coat over one arm Trevor smiled at the rat, "You know I did! That... that was the most debauched, kinky and fun five days I have ever had!" the mouse shuffled nervously then asked hurriedly, "Am I allowed to sign up again?"
"Yes," Orel said with a wide grin, "You have the app, it will unlock the selected menu now. You can put in dates when you might be free again."
Trevor nodded and slipped his phone into a pocket, it felt weird to be wearing clothes, to have his phone. He had sort of gotten used to be naked or only dressed in gear, "How many... of us are there?"
"Not many," Orel grinned, "It takes a very specific type of person to pass all our checks and become Toilet," the rat finished dressing and turned to face Trevor, "You are going to be one of the best."
Trevor gripped that paw and smiled, "Thanks... I'd love to talk sometime, let you know some things I'd like to try next time?"
Orel nodded, fingering his necklace then grinned, "How about I buy you breakfast? We can chat there?"
With a heavy clunk and an electronic beep the door from the Cistern unlocked and slid open. Trevor hesitated then nodded, holding out one hand to Orel, "Deal."
The rat gripped his hand and pulled the mouse close, kissing his nose, "Deal... come on, let's go eat, we aren't master and pet now, just rodents with something in common."
Trevor smiled and followed Orel out of the cistern, it had been a wild few days and more importantly he'd gained a new friend! Next time was going to be wild and horny but for now... now he was looking forward to breakfast. Heading up the stairs Trevor moved back to the world above, his normal life waiting for him, but he would be back, the Cistern would be waiting.
~fin