Sonic the Hedgehog and Knuckles the Echidna star in… “Gotta Go Fast” A story written in collaboration with the InferKit AI, because I was curious to see if it would actually keep writing fetishy material. Sonic the Hedgehog slowed to a walk as he felt his stomach begin to rumble. He had eaten several reheated chili dogs for breakfast, and as a loud fart blasted out of his ass, the hedgehog realized that he was about to pay the price for his indulgence. He took a quick look around the empty, early morning streets to confirm that he was alone before pulling down his shorts to reveal a thick white diaper. The hedgehog glanced down at his watch and realized that he was running late for his training session with Knuckles at the gym. "I'm almost out of time. Gotta shit fast," he grumbled, squatting down and lifting his little tail. Accompanied by another loud fart, the first of many logs of shit pushed its way into the seat of Sonic's diaper, creating an obvious bulge. "Unnnngggghhh!" Sonic grunted as a second, even larger log pushed its way out of his ass. Gritting his teeth, the blue blur pulled his shorts back up and started running again. "I'll make it in time," he told himself, "but I gotta hurry!" The weight of his visibly sagging diaper slowed him down as he ran, and only a few minutes had passed before his stomach began to rumble once more. "You've gotta be kidding me," he groaned as another wave of farts erupted from his rear. Sonic yanked down his shorts once again, releasing a massive load that immediately began to spread throughout the seat of his diaper, oozing down and around his balls. After a frantic search of his backpack revealed that he had forgotten to bring a spare diaper with him, Sonic glanced back at his rear, and noticed that the massive load was causing his padding to turn brown. "Damn it!" Sonic muttered as he again looked around the sleeping city blocks, which would shortly begin to stir. The smell of his own loaded diaper was starting to make him feel woozy, and he still had a long way to run if he was going to get to the gym in time to clean up before his daily session. The blue blur tried to pull his shorts back up, only to realize that they couldn't fit over the massive bulge. He was forced to stuff the shorts into his backpack and continue running with his stained, messy diaper on full display to anyone who cared to look. His legs started to feel weak, and the growing rumble in his bowels threatened to push him to the ground. He forced himself to continue running, wincing at the thought of being discovered in this situation. Sonic had spent years building up his heroic reputation, and being caught out in public wearing such a bloated diaper ran the risk of ruining all that work. "Come on, Sonic!" he whispered to himself as he took off again, his heavy diaper throwing off his sense of balance, in addition to weighing him down even more than it had before. He had no choice but to keep going, and after a few minutes of running, he saw his destination on the horizon. "Almost there!" he exclaimed, turning a corner. "Almost there!" The sun was beginning to rise, and the sound of cars in the distance was a clear sign that the city around him was beginning to awaken, but Sonic was now feeling confident in his ability to escape without notice. Then, he felt a powerful contraction in his ass once again, and a thick blast of diarrhea fired like a cannon into his already packed diaper. Only a block away from his goal, Sonic's padding had finally reached its capacity. The sheer amount of shit was enough to breach the crinkly barricade, and a warm runny paste started to run down the hedgehog’s legs until it threatened to soak into his sneakers. The shocking sensation caused Sonic to stop in his tracks and stare at the mess, until he spotted a door opening out of the corner of his eye and the panic jolted him back into motion. The hedgehog barreled down the street, almost at the door of the gym, nearly doubling over as he ran when another wave of diarrhea exploded out of the top of his diaper and coated his lower back with shit. The strong stench nearly made Sonic throw up, but he was mere feet away from his goal. He reached for the door, stopping mid-motion as another wave of diarrhea came rushing out of his ass, spraying all over his legs, shoes, and the sidewalk around him. As he fell to his knees in front of the door, the hedgehog couldn’t avoid the sight of his own repulsive reflection. "God damn it," Sonic groaned in frustration, standing up once again after the wave had ended. He grimaced as he looked down at the wet mess clinging to his legs, before turning his eyes back to the doorknob of the gym. He realized, to his horror, that his reflection was no longer alone in the glass, and turned his head to the side to see Knuckles the Echidna standing next to him on the sidewalk, his eyes widening as he stared at Sonic's massive poopy diaper. Sonic desperately tried to cover the bulge, but it was too late. Knuckles had seen, and smelled, everything. "Well, well, well. What have we here? A big baby hedgehog who-" Sonic cut his gym buddy off mid-sentence. "Knuckles!" he cried as his face turned red with shame, mind racing as he tried in vain to invent an explanation for his predicament. He was so distracted by his panic that he didn’t notice that the echidna was holding up his phone. "I have no idea how this happened! I haven't had an accident in months! I mean, years!" "Yeah, right," Knuckles smirked, glancing through the windows at the puzzled-looking gym staff who had gathered in the lobby to look at the gruesome sight. "And my name's Tails." Sonic opened his mouth to say something, but no words came out. His face turned an even deeper red, and tears welled up in his eyes. He tried to breathe deeply, but the smell of his own feces was too overwhelming and he ended up gasping for air. He looked down in shame at his overflowing diaper, brown stained legs, and shit-caked sneakers, and knew there was no way out of this. He just wanted to run and hide his shame, but knew that was not an option. So he did the only thing he could think of, collapsing to the ground in a sobbing heap. Knuckles patted him on the head. "Come on, you big baby," he said in a patronizing voice, "you need to go get cleaned up so you don't leave a trail of shit all over the gym." Sonic had no choice but to agree. He was ashamed of what he had just done, and the only thing he wanted now was for things to end. He pulled off his shoes, wiped his tears with his arm, and made his way into the gym. Before he could reach the shower, his stomach rumbled one last time, and a final blast of diarrhea flooded into his padded rear, with the added weight causing the diaper’s tapes to finally come loose, falling to the ground with a loud splat. "Oh god," Sonic cried, finally running into the shower, the shameful feelings inside him finally hitting at full force. This was all his fault. Eating the chili dogs. Forgetting a spare diaper. It was all his fault. He gritted his teeth in embarrassment as he looked down at his faint reflection in the plastic shower curtain. The hedgehog’s face was bright red and streaked with tears, eyes puffy from crying. His eyes traced his reflection down, with a red face giving way to a cream-colored chest, and everything further down being various shades of brown. After what felt like hours of scrubbing, Sonic eventually felt clean enough to step out of the shower and started drying his fur, which was now bright blue once more, off with a towel. Knuckles had located a spare diaper while his friend showered and left it on the locker room bench, so Sonic applied a coating of baby powder to his nether regions, and taped it up nice and tight. Unlike the plain white diapers he usually wore, this one was covered in babyish patterns. Building blocks, the letters of the alphabet, and an assortment of cartoon animals. Sonic was embarrassed to be wearing such a babyish garment, but after the incident he had been through, he had to admit that it was appropriate. He pulled his gym shorts, which were spared the carnage due to being safely inside his backpack, up over the fresh padding, and pulled his tank top over his head. He had previously kicked himself for forgetting to throw out his old gym shoes as they took up so much space in his bag, but Sonic was grateful for them now. His outfit taken care of, Sonic stepped out of the locker room and into the hallway where Knuckles stood waiting for him, a smug expression on his face. "You alright, bud?" Knuckles asked. Sonic gave his friend a weak smile. "Yeah, I just had a bit of an accident," he said. "At least it's over now.” Knuckles winked at his friend. "Well, I wouldn't be too sure about that," he said, playfully tousling the hedgehog's long blue quills. Sonic was puzzled, the full meaning of Knuckles' words unclear to him until he checked his phone and saw that it was blowing up with notifications. His heart skipped a beat. His inbox was filled with messages linking to a recently posted video that was already going viral, titled "Big Baby Hedgehog's Diaper Blowout." As Sonic watched the video in horror, a slow smile began to spread across Knuckles' face. The video, uploaded to Knuckles’ account while his friend cleaned up, showing a close up view of Sonic's accident outside the gym already had more than 25,000 views, and was being shared all over social media. As the video continued to spread, a flood of comments came pouring in, to the extreme humiliation of the blue blur, or, as an increasing number of people jokingly referred to him, the "brown streak." Sonic stood there, frozen, staring at his phone. The only sound in the quiet gym hallway besides Knuckles' laughter was a quiet hissing sound as Sonic started to wet his diaper.