Nesting Down in Slipstream City

Story by Tristan Hawthorne on SoFurry

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Here's a commission for my Master Pop the FA: BalloonPup / FA: MapleGleam

Tris' car broke down in the middle of nowhere... his phone runs out of charge before he finds any sign of civilization. And the civilization he does find is.... soft and glossy.

Contains: a Tired Puppy Looking for Help, a Soft Latex City, a Shaky Grasp on Perception, Aphrodisiac Scent, Sapient Feral Doms, Size Difference, Semi-Public Sex, Internal Rubber Transformation, Large Insertion, Pinning, Abdominal Bulge, Mind Alteration, Gel Egg Inflation, Casual Nudity, Multiple Partner Sequence, Seahorse Pregnancy, Exhibitionism, Rapid Egg Development, Topping Off the Clutch, Resting in a Nest, Talking to the Birbs on TV, Mammalian Egg Laying, Loving Affirmations from Multiple Doms, Completed Rubber Transformation, Memory Loss, Pouncing and Establishing the new Norm.

Tris is Me!

Slipstream and her City of Birbs belong to FA: BalloonPup / FA: MapleGleam

I know not everyone has the income to commission me, but if you still want to support my writing, I have a Patreon that you can pledge to, or for one-time donations,you could always get me a Ko-Fi


Tris sighed. His phone had run out of power before he could find cell signal, and his car remained broken down in the middle of nowhere. The black lab had been walking the road to find help since it was dark, and it was nearly midday. He hadn't had anything to eat and he had no idea if...

A city. He came over the edge of a valley and there, nestled into the valley's base was a city. The road switched back and forth along the steep valley wall, but he was exhausted and in a hurry. The nearest structures seemed to be towards the bottom of the hillside. Tris carefully clambered over barriers and crossed the road and rough hillside between lengths of asphalt over and over.

Until he stumbled and tripped over a barrier. He put his arms out to protect his face and flopped onto something soft. He groaned, finding himself sliding smoothly down the hillside, almost without friction and with nothing hard or jagged on the ground to harm him. "W-wha...?" Tris managed before he bounced against another barrier. He wrapped his arms around it and held tight to stop his movement, slowly getting his shoes under his hips to stand up properly again.

Now stable, he could examine his surroundings better. From a distance the barrier had looked just like the solid metal ones he'd been vaulting, but touching it the material was elastic and soft. The asphalt on the far side of it had none of the texture he was used to on a road, a glossy smooth surface over pitch black. Carefully stepping over the soft barrier, he found the asphalt to be soft and yielding to his weight, not unlike floor mats used to make standing more bearable.

"Where am I?" Tris asked the empty road around him while fidgeting with his hoodie, unzipping after a moment's thought. He wondered how cars fared on this type of pavement, crossing the street and stepping over the far barrier to let himself slide to the next. There were only three switchbacks left using this method, and they went far faster than the previous dozen or so. He stepped onto the road he had seen the closest structure on. Getting closer, it appeared to be a toll booth. The bar was down, and when he looked into the guardhouse no one was in there. The sign above the coin deposit used pictographs he wasn't familiar with.

The dog walked around the booth to see if there was anything else, perhaps a charging cable inside for his phone. He found nothing, and continued on the road. He was at the outskirts of the city, the first proper buildings a few stories tall and just as glossy as the roads. He looked around. No signs of cars here either. "Hello?" He called out, and only heard his voice echoing across the flat surfaces of buildings.

"Hello." A feminine voice struck the air from behind the canine.

Tris started in surprise, looking around. Standing on the sidewalk was a strange quadruped. It had a bird's face, wings, and forelegs, and a horse's hindquarters. It was also just as glossy as everything else, hot pink and had a mint green shock of a mane and tail. "Uh... Where am I? You did speak, right?" The dog asked, confused.

The same voice as before came from the creature's beak. "Yeah! Uh... what was the question?"

The black lab swallowed and looked around, up at a street sign that also had pictographs he didn't recognize. "Could you tell me how I could get help for my..." He trailed off as he looked back to where the colorful creature had been. Where she had been standing was now a simple bench. "...car."

Out of the corner of his eye, the dog thought he saw pair of the quadrupeds come out of a nearby alley entrance. Tris turned his head that way, and stared. Next to the alleyway was a tall streetlight. He wasn't sure it was there before. The lost pup made his way over to the street light carefully.

Before Tris could reach out and touch it, a motion in the alley drew his attention. He dropped his hand and stared.

A much larger of the beasts was standing there, smiling down at him with her glossy beak. She was lavender with a powder blue mane. Tris was a tall anthro but he only came up to the base of her neck while she stood on all fours. "Hello there, puppy. I'm Slipstream." She said kindly, while taking a step backwards into the alley.

Tris blushed a bit at the tone, before taking a few steps into the alley. "Uh, hi. I'm Tristan." The dog swallowed nervously. The whole alley had an intense but pleasant odor to it, like fresh latex and lavender. "Tris, usually. Can you help me? My car broke down on the road and my phone's run out of battery."

"You look exhausted, poor thing..." Slipstream calmly brushed past the dog, running a wing along his cheek. The dog realized that strong scent was coming from her. "Let me take care of you for a little bit, and I'll help you, Trissie."

Blushing, the pup wasn't sure what that meant for a couple moments, before his eyes caught sight of the piece of equine anatomy she was displaying to him. A glossy, dark purple equine shaft was throbbing its way to hardness between her hind legs.

"W-won't that just tire me out more?" He managed, finding his jeans tenting up. Why was he so aroused? He'd only just met this creature, and he was lost... his tail quivered.

"It's really quite refreshing." Slipstream explained as her beak got in close to one of the dog's flopped ears. "Turns all that ache into pleasant warmth so you can continue on..."

The canine whined softly, shuddering a bit. "Y-you promise?"

She nuzzled, nipping with her surprisingly soft beak at his throat. "I promise. Turn around, Trissie."

Obediently, Tris turned to face the wall of the alley.

Her claws moved quickly, slipping his jeans off his hips and down to his ankles. They then grasped around his pudgy waistline and lifted him straight out of his shoes. The pup was pressed up against the wall of the alley for support.

The black lab grasped onto the glossy wall, feeling the mortar and edges of each brick deform against his grip. His toes wiggled bare, dangling above the ground, when he felt the blunt tip press under his tail. Tris swallowed, biting his lip. Would it even fit?

Slipstream cooed to the pup as she placed his whole weight onto her equine member. "Relax Trissie." She parted her beak and pressed her narrow tongue into one of the pup's ears.

Tris gasped softly, his eyes going unfocused at the sensation of warmth pressing in to his ear. His whole body slumped partially, only still gripping onto the bricks.

It was easy, then, for the great beast to mount, slickly pressing her blunt head into his rear and driving it in all the way to the medial ring in one stroke. She withdrew her tongue for the time being, nipping at his cheek with her beak.

The dog moaned out, eyes wide behind his glasses. Tris had expected perhaps pain, or discomfort, but there was just the warmth of his flesh stretching and a faint tingle. The most intense sensation, however, was the blunt head pressing against the hidden pleasure spot located a ways into his lower tract. His own canine member twitched and leaked slick from the stimulation.

"Good Trissie." Slipstream chirped proudly, taking a moment to press just enough for the medial ring to pop through, holding in a giggle at the noise this elicited from the anthro.

Tris blushed softly, peeking back towards the alley's entrance to make sure no one was watching. A few brightly colored shapes ducked out of sight as he focused on the corner of the wall he clung to. Before he could try to process what they were, he felt the intrusion in his body smoothly piston all the way in. He panted as he felt the medial ring grinding against that spot the head had teased before in combination with a new stretching sensation up in his abdomen. The dog let his head slump between his shoulders and blinked a bit, wondering if his shirt was just hanging that way or if that feeling...

He was answered when the large quadruped pulled her hips gently away from his own and his shirt flattened down against the familiar curve of his stomach. Tris then got to see the distention return and tent the fabric back up as she hilted again, more firmly.

"G-gah... how...?" The labby asked, breathlessly. He could feel himself being driven towards his peak rapidly without touching his needy shaft just from the increasingly intense pounding into his depths.

Slipstream crooned and spoke a syllable on each thrust: "Just calm down and be Mine." She dove her beak down to his untouched ear and pressed her tongue right in, deeper than the first probe.

Tris' eyes glassed over behind his spectacles and he moaned weakly. He could feel the tongue. It was in... it was in his mind... He couldn't even comprehend how this was possible, or even mentally object to it being impossible. All he could do was experience the pleasant tingle in his ear and suffusing throughout his head, while the steady pounding spread a similar tingle up through his insides and into his throat.

The steady beat of hips on doggy rump destabilized, before the lavender quasi-avian hilted once and then pulled back until the medial ring just barely stayed inside the chubby canine. The underside of the equine shaft swelled with not quite spherical shapes, each one pressing the next up and through the tautly stretched under-tail.

The puppy stretched easily, his mouth hanging open and allowing his tongue to loll as the flesh within visibly smoothed out and became a uniform shade of black. Any discoloration or imperfection on his teeth faded away into pristine white enamel, or at least, the appearance of such. With each lump that pressed through his ring, the labby grunted thoughtlessly, his belly gradually swelling in a way that made his shirt ride up further than the impossible insertion had. Around the tenth ovular bulge that pressed through and into the canine, his cock spasmed and started to shoot white seed against the glossy bricks. After the third shot, however, his issue ran black, thicker than before and far more smooth.

Slipstream kept it up for a few more moments, before the forms stopped pressing up into her shaft and the pup started to come down from his peak. With a mischievous look in her eyes, she thrust back to the hilt, forcing the few lumps in her shaft that hadn't passed through the ring in in short succession. She waited for the pup to finish writhing as the sudden stretched caused him to pump more black against the wall, before she pulled out, revealing her shaft to be smooth and empty. She retracted her tongue as well, before giving a gentle nip on the labrador neck.

Trissie came to, blinking his eyes back into focus. "S-Slipstream?"

She crooned, gently setting him down on the ground, facing the exit of the alley. "Now, you be a good puppy. I'll check in on you later."

The pup turned to look back at her, but she was gone, along with his jeans and shoes. Trissie rubbed the side of his head, feeling the slick dripping out of his ear and looking at his paw, the pads looking glossy. He rubbed them together and felt just how smooth the stuff was. "Huh..." The black dog started to walk out of the alley, having forgotten he'd come into town wearing anything below the waist.

Trissie stepped onto the sidewalk, enjoying the pleasant yielding smooth texture beneath his feet. It was soft on his pads and the slight elasticity made taking the next step easier. He slipped his paw into his pocket and felt his phone there. "I should have asked where I could get a charge..." His other paw thoughtlessly rubbed over the exposed curve of his belly and found that it was quite sensitive, jostling a good number of smooth, gel-like objects inside. This didn't seem to faze the pup, as he was far more focused on finding somecritter to ask where he should go. Though it did bring a blush to his cheeks, purple showing through his dark fur.

A couple more blocks towards the center of the city, the dog spotted a public phone booth. He wasn't sure if he had any change, but he could still get information from an operator. He pressed into a jog, cradling his full belly with one arm. Each footfall sent a jolt of pleasure through his body as the shapes inside shifted and sloshed from his bounding gait. "G-guh..." He blushed a bit deeper as he realized he was getting hard again from the feeling.

He wasn't even out of breath as he arrived at the booth, opening the door and closing it behind him. Letting go of his tum, he picked up the phone receiver and pressed the button that would have been zero if it was mapped the same way he was used to.

Without ringing, a chime that sounded like a bird chirp came three times through the handset, before a voice. "We're sorry. The phone you've dialed is a birb. Please hang up and try your caw again."

While Trissie looked at the phone in confusion, he heard the door to the booth open and close again.

Not a moment later, he was pressed up against one of the clear walls of the booth by a familiar type of body. A midnight blue claw wrapped around his chest as a similarly colored beak peeked into his peripheral vision. "Hey, Trissie."

"Another hippogryph?" The pup let out a soft groan as he felt a familiar pressure under his tail.

"Oh neat, Slipstream let you know what we are!" The quadruped chirped happily while mounting the pup, feeling the pleasant sensation of slick on slick. "And got you all prepped inside, too. Lucky puppy."

The pressure pinned Trissie against the glass and he felt his sensitive stomach smoosh into the flat surface, shifting around the implanted objects. They shifted even further as an equine shaft pressed up amongst them, but not quite enough to bounce against the glass through his hide. "I... I am?" He moaned, clutching the phone receiver tight enough that it squawked.

"Yes you are~" She crooned affectionately, starting to thrust steadily. "And you're such a good boy. Soon you'll be ready to lay. I know you'll love it."

Trissie slumped his face against the glass, blushing softly as his whole body shook with the impact of each hilt, and each time the shaft pressed deeper it moved around some of the soft forms in his abdomen in a way that sent tingles from the base of his tail to the back of his head. "I... I'm already close..."

The hippogryph giggled affectionately. "Of course you are. Let's get you a second batch going, and then you can head to your room." She pounded three more times, before hilting firmly. Unlike Slipstream she started to release more ovoid gels into the pup directly, apparently feeling no need to let them gather outside before being pressed in.

With every pulse, the pup's belly expanded just a bit, adding to the collection of forms that were rounding out his belly. At the same time, his shaft began to spurt black again, gathering on the glass beneath his belly.

On the other side of the glass he thought he saw more hippogryphs watching. One waved.

Trissie waved back thoughtlessly as his peak came down, bleary in afterglow.

The hippogryph on his back finished pumping and kissed his cheek. "See you later, Trissie." She smoothly pulled out and opened the booth.

The black lab panted, pressing himself weakly off the wall and looking around. Once again he was all alone. He set the phone on the receiver and felt over his belly. With the added mass he could now feel the topography of his filling without pressing in firmly on his own flesh. "W-why... does this feel right...?" He murmured bashfully to himself, stepping out of the booth.

Tail wagging dopily, the disoriented pup thoughtlessly walked, crossing the street three times before he thought to look where he was going.

Up ahead of him was a towering skyscraper, with a sign a few floors up in lavender neon. 'The Brood'.

Trissie headed to the front door of the building and pressed it open, stepping inward. The large lobby was open and sleekly designed in blues and purples with silver and black accents. The pup looked around as he walked in, before spotting a white hippogryph wearing a little art deco styled hat.

She waved him over. As he approached he saw the sign 'Information Birb' on her desk. "Welcome to the Brood, Trissie. Your room is ready." She held out an old-fashioned skeleton key with a graphite finish. "When you're ready, head to the elevators and you'll be taken up."

The dog blinked and took the key. On its ring was an egg-shaped tag, but instead of a room number, it just said 'Trissie' in block letters. "Where are the elevators?" The pup looked up from the key.

The information birb smiled and pointed to an alcove he hadn't noticed before in the lobby.

"Thank you." Trissie nodded, idly caressing over his belly as he walked to the alcove. Indeed, there were five elevator doors within, two each on opposite walls and one on the remaining wall. The dog pressed the button with the up arrow on the wall beside him, thinking nothing of it making a chirping sound rather than a chime. He tucked his key in his pocket opposite his powerless phone and set to feeling over his stomach with both paws, quivering and letting out a little groan as he felt the slick, soft shapes inside jostle and slide against one another and his insides from the pressure he applied.

Another chirp alerted the pup that an elevator had arrived. The door to his left and in front of him opened. Trissie took a step forward and turned to enter.

Inside, standing beside a lever, was a smiling kindly red hippogryph with an orange mane. She was wearing a little burgundy cap similar to the information birb's own and a double breasted jacket with black buttons. "Come on in, Trissie. I'll get you to your floor."

The pup complied, stepping into the elevator and looking at the copper finish on the inner walls. "I've never been in an elevator that had an operator."

"You're in for a treat then." The operator grinned as the doors closed, before grasping the lever in her claw, squeezing the bar to the handle and pulling firmly.

The sudden acceleration sent Trissie scrambling for something to hold onto. He ended up with both paws grasping onto a handrail around his hip height against the wall opposite where the lever was set. He didn't realize that this caused his hips to jut towards the operator until her presence got more intimate.

The red hippogryph crooned, placing her claws on top of Trissie's hands to keep them in place as she mounted, smoothly slotting her equine erection into the bottomless pup. "Before you get to your room you need a top-off, puppy." She began thrusting tenderly, pressing firmly to the hilt with each repetition without a hard impact. "Such a good puppy..."

The labrador groaned blissfully as he was taken once more, curling his toes against the soft flooring inside the small chamber, resting his brow against the soft metallic wall as his sensitive insides were gently worked and stretched once more. "I... I'm a good puppy..." He repeated, as if he was overjoyed to hear it, but surprised at the praise nonetheless.

The operator cawed affectionately. "Yes you are. You're the best puppy, taking three clutches on your first day~" She glanced back to see where they were in the building, and wrapped her tail around the lever, all without stopping her tender topping.

"F-fill me all the way..." Trissie murmured needily, feeling on edge again.

"Of course, Trissie." She nipped lovingly at his neck and pressed firmly to the hilt. A moment later, the now familiar feeling of getting filled with form after form sent tingles all over his body.

The needy pup flexed his pucker after each lump pressed through, wanting to feel as many as he could, already feeling his stomach sagging lower, the top weighing down on his twitching, leaking shaft. As the reverse G force of the elevator decelerating to a stop jostled him, he howled out quietly, once again painting a pristine surface with strokes of thick black seed.

The hippogryph released the handle with her tail and let the pup ride out his peak while she finished pumping into him. Once they were both done, she gently pulled free of his rear with a wet squork and gently patted his well-used rump with her talon. She then stepped back into her station and pressed the 'door open' button with one claw. "Your room is just down the hall on the left."

Trissie slowly let go of the handrail. "T-thank you..." He stepped out of the elevator and heard the doors close behind him. Pulling his key out of his pocket he walked down the hallway, a bit of slick dripping from his loins still. It wasn't very long until he found a door with a label that matched the tag on his key above the peephole. The key unlocked the door easily and he pressed through. The inside was laid out like a hotel room, except in the place of a bed was a large bird's nest constructed out of what appeared to be rubber tubing.

Thoughtlessly, the dog clambered into the nest and reclined against the side up against one of the walls of the room. The other wall had a large television on it. Looking around, Trissie found a remote control and turned it on.

The TV turned on, and some kind of show starring glossy smooth hippogryphs was playing. He casually slumped into place, watching the screen. His fingers idly traced over the shapes in his midsection, pressing experimentally every so often. The whole time his mind just fixated on the cute birbs on the screen, having misadventures and being good to one another. Comforting for a tired puppy like Trissie.

After an uncounted number of episodes, with the sun already set beyond the reach of the valley walls outside, the labrador realized that the shapes in his body were not only larger than they had been, they were also solid rather than gel. "Huh...?" The change had happened so gradually that he didn't realize it until it was done.

And then one of them dropped inside him, sending a tingle through his form. "W-what?"

The pretense of a TV show abruptly ended as Slipstream appeared on screen. "Hey Trissie. Just relax. You're laying."

Trissie blushed deeply. "Slipstream?" He moaned as he felt his belly contract on its own, pressing one of the firm shapes that stretched his bowels in a way he hadn't felt since the largest hippogryph had mounted him against a sensitive spot.

She smiled warmly. "Now, be a good puppy and get each and every egg out, okay?" Slipstream crooned affectionately like she had when they were together in the alley.

The pup moaned out, and felt his under-tail stretch open. With a jolt of pleasure, the whole form of a blue egg popped out of his rump and rolled down to the center of the nest. Trissie's arousal was throbbing up against his full belly once more.

On the screen, a dark blue hippogryph waved her midnight blue talon. "Hey, Trissie. You didn't get a good look at me before, but you're doing a good job. You're such a good puppy."

Trissie panted, gripping onto the tubes of the nest's construction as he felt another egg grind against his prostate on the way out, sending a spurt of slick from his shaft. With a pop, a black egg rolled out to join the blue. He hardly had time to recover before a third was sliding its way along.

A third hippogryph appeared on camera. The red hippogryph took off her little uniform hat, smiling. "There you go Trissie... just lay. You'll be through our clutches in no time."

A candy-red egg rolled down to meet the other two. And then another egg, and another... the gathering got splattered in black ropes of sticky issue, but still eggs of the three colors kept coming out one at a time. The trio on screen cooed and fussed over the puppy, praising him as he went.

Trissie had lost track of how many eggs he'd laid, and even how many times he'd reached his peak from the intense sensations, but he did know when he abruptly felt empty and there was a hefty pile of eggs between his thighs, he slumped his head back.

"That's a good puppy."

"You did it! You can rest now, Trissie."

"Sleep well, Trissie. You're a good boy, and all mine."

Trissie drifted off with a wiggly smile on his muzzle, sinking down a bit as he relaxed.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

The morning sun streamed through the window across Trissie's face. The pup rolled over with a groan, hugging his pillow. He murmured a bit, and slowly remembered that he wasn't in his own bed. He peeked around the hotel room from his king size bed, before reaching to take his glasses off the nightstand.

Slipping the glasses on, the glossy pup rubbed the side of his head, feeling the comforting sensation of his paw squirking against his cheek. "I'm glad I found a place like this to stay the night..." His phone was plugged into a charger next to where his glasses had been. He tapped it, and the screen told him it was fully charged.

The naked labrador stood out of bed, tail wagging about comfortably. His glossy black form was far smoother than when he'd gone to sleep in more ways than just his fur replaced with what appeared to be well polished latex. His hips were also rounder and wider than when he'd arrived, as befitting a pup who needed to do a lot of laying.

Trissie sighed and slipped on his glossy tee shirt and put on his vinyl jacket. He unplugged his phone and tucked it into his pocket, and found his room key still in his other pocket. The labrador merrily walked straight to the door of his room and slipped out of it, pausing to lock the door.

The black dog wagged his way down to the elevator. When it opened, it was empty. He stepped inside and selected the lobby from the button panel, no lever to be found.

One quick, uneventful ride down later, he was walking across the lobby, humming to himself. He idly felt his midsection with his paw, feeling it smoosh elastically between his fingers. "Hmm... I'm feeling pretty empty..." He said to himself as he pressed the lobby door open.

The sound of squeaky hooves and talons pounding across the broad lobby approached Trissie from behind. The pup squeaked in surprise as he was tackled, going flying right into the decorative bushes right in front of The Brood building.

The rubbery shrubberies yielded smoothly, absorbing most of the impact, as Trissie discovered himself on his back, underneath the information birb. She stroked over her glossy pink shaft, crooning to him with a mix of lust and affection. "Poor puppy can't be left empty, can he?"

Trissie blushed deeply, but shook his head in agreement.

"I'll have to do something about that." She winked, and slid her shaft down along the pup's sheath with a long, slow squirk.

The labby moaned as this easily coaxed his own arousal into the open, before she planted the blunt head of her equine member to his entrance.

She leaned down over him, beak to snout. "Welcome to the first day of the rest of your life being Slipstream's puppy, Trissie~" She thrust to the hilt.