The zebra walked onto the bus easily, wiping his io-band over the scanner. Not to collect a fee, but for bus usage stats. He made his way down the aisle, eyeing the open seats. It wasn’t rush hour or anything, plenty of room for him to have his own row, even. But he noticed something he needed, or rather someone, and he sat on the row beside them. A womanly feline happily sat in her seat, holding a purse to her nude body.

Her io had the idle display color of light blue to indicate her nudity permit, luscious black fur, motherly curves, and milky breasts open for all to see. Beside her, a young little snow-white kitten sat with kicking legs and a bright smile. Equally naked as his mother, the little cub had to be no older than seven or eight, with a metal collar. It had all the info he needed, stamped with ‘Toilet'; while the bold ‘WC’ brands set into his belly and back fur had gotten the zebra to sit across the aisle to the cats.

A hiss and shudder, then the vehicle began moving. He had his stop across town, settling in for the decently long haul. After waiting a minute for the polite silence of public transit to return, he leaned over and gently spoke to the dark-furred mother. “You two going to be riding for a while longer?”

Ears perking and tail suddenly curling a touch, the shadowy cat woman peered over at the calm Zebra. Flashing a little smile, she gave a little nod. “Yeah, our stop is the last one.”

“Ah, mine too. Mind if I use your toilet then? My bladder is doing that thing where it’s forcing the issue now that there’s one so close.” 

The pretty mother beamed a smile of polite hospitality, dipping her head in an affirmative. “Sure!” She winked at the striped stallion, patting her son. “Try not to drown him~”

Scooting to the window seat to make room for the freshly attentive cub, the man chuckled. “Don't worry about that, I'll be firmly in his stomach. Choking on the other hand...” With a little whisper and a point, the mother sent her boy to sheepishly cross the aisle and sit beside the equine. The little nude kitten glanced nervously around the zebra, eyes flitting from his face to the growing bulge in the stallion’s pants. Now sitting beside the man, the little boy looked back to his mother across the aisle, and got an encouraging thumbs up.

The boy gulped, feeling a little heat rise to his face. His hands gripped at the seat beneath him, tail curling and body shifting to face the stallion. He glanced at his mother, then back to the man, fidgeting a little in place. "S-So, mister. M-Mommy said you need to pee in me?"

"Yes, I do." The zebra's voice was smooth and calm, as was his posture. His hands were folded in his lap, body resting back comfortably against the seat. "You're awfully nervous for a toilet that made it past infancy. You understand what’s happening, right? That I'm going to use your mouth and stomach as a toilet?"

"Y-Yes, mister.." The boy squirmed a little, glancing at his mother again, who was simply looking out the window. She was going to let him do this, obviously. "M-Mommy said it's my p-purpose to let you use me."
The zebra let his hand slowly trail down to rest on his bulge, finger flicking his zipper. "Well? Get started toilet."

The kitten swallowed thickly, nodding his head and leaning forward a little bit. He reached his little hands out to grab the zebra's crotch, fumbling to open the zipper in his pants. He pulled the zipper down, the stallion's big bulge straining at the fabric beneath it. With a gulp and a deep breath, the boy reached his hands into the opening, sliding the zebra's cock out. It was large, throbbing, and very much ready to go despite not being full size yet.

The cub blinked a few times, staring at the veiny horsecock in front of his face, then back up to the zebra. "M-Mister... I don't think that will fit." He mumbled, looking a little intimidated, and a little nervous.

"Oh? Are you not a good toilet?"

The kitten shook his head, eyes locked onto the equine's dick. "N-No, I mean.. It's just... It's so big..." He frowned a little, eyes starting to well up with tears, "I don't think I can... I'm scared..."

The zebra gently placed his hand on the boy's head, scratching him behind his ear. "Hey, it's okay. Don't worry about it. Here, I'll help. Just open your mouth, and I'll take care of the rest." He offered, taking his free hand to guide the cub's mouth open, holding his jaw in place with his fingertips.

With the cub's mouth open and tears forming at the corner of his eyes, the zebra quickly mashed his blunt head to the boy's lips. The cub whimpered a little, the broad musky surface smushing to his too-small mouth. A shudder ran up his spine, a little bit of saliva escaping his mouth to slide down the length of the horse's cock. As the cub's eyes scrunched and face twisted in discomfort, it wasn't enough to squeeze the arm-thick length past the little mouth.

So the zebra took a different approach, his hands moving to firmly grasp the kid's skull. Then he shoved.

The cub's eyes shot open, a little noise squeaking out of his straining lips, tears now starting to run down his face. The zebra didn't care, not letting the kitten stop him as he forced the tip of his cock into the cub's mouth. A sickening snap joined a sharp yelp as the boy cried out, jaw dislocated to allow the thick member entrance to his mouth.

The cub gagged and choked as the zebra kept pushing forward, a grunt leaving the zebra's throat as he felt the cub's teeth digging into the sensitive flesh of his member. His eyes narrowed, the boy's blunt little chompers not even able to scratch the thick, leathery surface of his dick. "Nngh! F-Fuck..." The zebra grunted, using his grip on the cub's skull to move the boy forward, forcing his way deeper and deeper.

The cub tried to fight, tried to get away, his hands pushing feebly at the equine's legs. But the stallion was stronger, forcing him to take every inch of the dick down his throat and ever closer to his stomach. The progress was visible to all who looked, a firm bulge stretching out the boy's neck, the outline of horsecock descending with every inch the zebra tugged the kitten's skull farther down.

The cub's eyes watered, drool and tears ran down his face, trying to cry, to shout for his mommy. The zebra could feel the boy's throat tighten around his shaft, a gurgling choke and a moan of pain and fear vibrating out of the cub. The sound was muffled, silenced by the fact that the zebra was now halfway down the boy's throat.

With a quick thrust, and a dull crick noise, his flare battered his collarbone apart to allow his dick entrance to the cub's core. This brought a fresh new wave of struggling spasms from the boy, the noises he tried to make both getting more frantic and quieter, his limbs flailing with even less force.

The zebra let a chuckle leave his throat, his hands keeping the cub's head firmly in place. "That's it. Almost there. Let me in your stomach. Take me all the way in." He whispered, watching the boy's neck expand unnaturally to stretch around his size, watching his cock's outline sink below the boy's collar.

Finally, with a sharp inhale, the zebra shoved the cub down his length. There was a wet, squelching sound, a dull crunching, and then the cub's head was pressed against the equine's musky groin fur. The zebra let out a breath, keeping his grip firm as the boy let out a surprisingly loud scream while his lower body thrashed in the seat.

A few others in the bus peered over, concerned by the cub's sudden and intense fit. They looked away after the zebra shot them a glare, the mother across the aisle just shaking her head and looking over with a chuckle. "He's not giving you too much trouble, is he? Should I come over?"

The zebra let a smirk curl his lips, watching the boy struggle against him. "No, no. I've got this handled. He's just not a fan of my flare busting into his stomach and my dick stuffing his entire esophagus. I've got him all plugged up and ready to be filled." He chuckled, rubbing the cub's head.

The cub shook his head as best he could, muffled noises coming from his mouth. Eyes full of pain, with pupils reduced to frightened slits peered up at him, begging him. The zebra merely flexed his shaft, watching the boy shift from the power of the throb coursing through his entire neck and upper body. A whimper came from the cub, but was turned quickly into a harsh gurgle.

The zebra had begun pissing inside the boy's stomach, blasting the urine directly inside him. The cub began to gag and choke, his body trying to expel the foreign liquid from his core. But there was no way that would happen, not with the zebra's cock in the way, keeping him in place. The equine watched his cub's face grow red, the boy's eyes shutting tight as he began to convulse in place, the color under his fur gently turning blue. Meanwhile the man merely looked at the boy's spread lips around his base, the unnatural position of his jaw. And the audible sloshing as he unleashed a torrent of acrid yellow waste inside the boy.

The cub's body began to twitch and squirm in the stallion's lap, a weak little whimper squeaking out of the boy's lips, growing quieter. "Nnnf, f-fuck..!" The zebra growled, overcome with the blissful release of unloading his bladder coupled with the delight of seeing this boy hilted on his cock, pleading for air. He felt his body flush and begin to sweat, a light sheen of moisture forming on his skin.

His arms were trembling, gripping the cub's head hard as he held the cub's lips down his shaft. Then it happened, the boy's mouth suddenly stilled, a tiny gasp for breath. A soft wheeze and a cough, but no movement. The cub's eyes were open yet distant, his body no longer shaking, not a single heave coming from his lungs. Just gone with a whimper.

The zebra pulled his hand away from the boy's head, a satisfied sigh leaving his lips. His dick was still throbbing inside the cub's corpse, but his body was already relaxing and settling into the long ride of dumping a race-horse sized bladder into the still-warm kitten's stomach, the corpse's middle slowly bloating. The zebra gave a satisfied smile, leaning back in his seat to rest, enjoying the gentle rocking of the bus, his cock still lodged deep inside the little cub as the belly began to gradually swell from the zebra's sheer volume, clearly able to hear the gushing noises from the cub's stretching stomach.

The mother looked up to see the zebra relax into the seat, her son's lifeless body still hilted in the stallion's lap, the cub's eyes still staring blankly at nothing, his mouth still open, still plugged with an immense horsecock. She smiled, giving a little nod to the zebra, returning her attention to the window. She had no specific interest in the zebra, just proud her son could fulfill his purpose as a toilet to the fullest, right to the end. Though it was almost mesmerizing to watch her boy's lifeless belly continue to bloat as she could hear the faintest noises of gushing fluid from it. 

She smirked to the man who's cock her son choked on. "You really had to go, huh?" She asked, peering over again, watching the cub's bloated body slump in the zebra's lap, the zebra's dick visibly bulging the cub's throat. One of the last rigid things in the kitten's body.

The zebra chuckled, giving a nod. "Yeah, you have no idea."

—

The bus was nearly to the last stop, the destination for the feline mother and zebra. He looked down at the long-dead boy, big distended belly wobbling and sloshing with every bounce of the bus. Stretching his arms, he yawned, cock a little softer and smaller after so long, merely lodged in the corpse's throat instead of stomach. Still, as he flexed it, the boy's body lurched on his lap a bit. He looked over to see the mother slyly grinning at him.

"Go ahead, stud." She whispered, "Pull him off and give me a good show." Her eyes widened, licking her lips as she saw the zebra slowly pull his dick out of her dead boy, the cub's broken jaw allowing the stallion to slowly tug his cock and expansive flare from the cub's throat, a final wet, slurping pop filling the air. The zebra's cock slipped free with a sloppy plop, the cub's body dropping to the floor of the bus with a dull thud, and a liquid gurgling noise.

The zebra reached down to the boy's body, lifting it and placing it on the seat next to the mother, reuniting them. "Sorry, didn't mean to keep him over here for the entire trip. Figured it's about time he's back with you." The corpse limply slouched in the seat, distended middle wobbling with splashy noises as the heavy load of urine settled once more in the cold stomach.

The mother smiled, reaching over to run her hands across the boy's face, stroking the cheeks and easily peering into his slack-jawed mouth, the throat frozen in a horse-thick gape as lifeless eyes stared ahead. "Such a good boy." She cooed, leaning in to kiss the corpse's forehead. "I'm proud of you."

The zebra grinned, taking a glance at the mother's exposed mound. "So, uh, I'm guessing we're getting off at the next stop. Got any plans after that?"

The woman gave a little shrug, leaning back in her seat and spreading her legs a little for the man to see the smooth, bare lips of her cunt. "Nothing beyond lugging his body to a butcher or a trash can, whichever is closer. Why? You interested?" She asked, running her hand up her exposed slit and cupping one of her open breasts with the other.

The zebra licked his lips, smiling. "Oh, I'm definitely interested. Needless to say, this trip got me a little worked up." His hand trailed down to his crotch, gently rubbing the bulge re-growing in his pants.

The woman let a grin slip onto her face, "Well, perhaps you'd like to help kickstart the process of replacing my boy?" She said with a little slap to her pussy.

There was the sound of straining fabric as the zebra's pants threatened to break as his bulge flexed. "If I don't rip through you first. You saw what I'm packing."

As the bus screeched to a halt, both of them stared at each other as they got ready to depart. Standing, the mother grabbed her dead boy's arm and began dragging the body off the bus, while she shot a wink back to the stallion. "I'll take my chances. I was quite the size-queen in my younger days."

The zebra grinned and stood, stepping off the bus after her and following her down the sidewalk, chivalrously offering to carry the kitten's body so as to not scratch a valuable pelt by dragging it on the sidewalk. Then they set off together, the sun on the way to setting a glorious backdrop.