Sonic, Knuckles, and Tails star in…
"Explosive Revenge"
(2.6k words)


—
*BEEP* *BEEP* *BEEP*


The echidna groaned as he removed his card from the insistent credit card reader, putting it back into his wallet as the cashier handed his receipt and gave him a number. Despite the fact that it was the middle of the lunch rush, "Knuckles" had no problem making it over to an empty table. 


His well-used diaper wasn't being hidden at all by the tattered remains of his sky-blue shorts, and even if his clothes had remained intact, they hardly would've blocked the smell. He'd filled the diaper far more than they were designed to hold, but Sonic was hoping that it would hold until he'd finished his lunch and made it back to the gym. Many of the other Taco Bell patrons had cleared out, an issue that might have gotten him in trouble with the employees if he hadn't informed them that he planned to make a large order, consisting of one of every item on the menu.


"Knuckles is never gonna live this down," Sonic muttered softly with a grin, noticing that nearly all of the remaining customers had their camera phones pointed at his borrowed body. He waddled his way over to the soda fountain, filled his cup with some Baja Blast, and made his way over to a table near the window.


He sat down slowly and deliberately, moaning softly as he lowered himself down onto the chair with an audible squishing noise. The mess in his diaper oozed up and around his crotch, causing the brown stain on the exterior of the padding to grow. He wiggled his butt around for a moment, enjoying the feeling of smearing shit around his lower body, but stopped as soon as he felt that the diaper was close to losing containment. 


The echidna leaned back in his chair, propping his feet up on a chair placed on the other side of the table, and noisily slurped at his soda as he waited for his order to arrive. 


        Back at Tails’ house, the small yellow fox was dealing with his own grumbling stomach. He hadn’t eaten quite as much for breakfast as Sonic had before he set off downtown in Knuckles’ body, but it was a hearty meal nonetheless. He held a hand to his stomach as the rumbling intensified, glancing over at Sonic’s body which was continuing to fight against its restraints. He’d finally changed the hedgehog’s diaper after deciding that the joy of seeing Knuckles in a soggy diaper wasn’t worth the cleanup effort.


        “Let me out of here!” Knuckles yelled for what seemed like the hundredth time. “Whoever you are, let me go or you’re gonna regret it!” Tails had no such plans, and was mostly just happy to see that his plan had worked, and the combination of the device, headphones, and a blindfold had kept his “friend” completely in the dark.
        
        Another part of him, however, was annoyed that he hadn’t thought to put a gag in the hedgehog’s mouth before he started all of this yelling. As the feelings in his stomach intensified, however, the fox had a devious idea. It would serve Knuckles right after what he’d done, after all. 


        Tails walked over to the chair that the hedgehog was bound to, and slowly tilted it back until it was laying on the floor, triggering another expletive rant from his captive. By this point, he had adjusted to hearing Sonic’s voice hurling profanities his way, and it was just obnoxious instead of uncomfortable. The only thing it did now was strengthen his resolve. 
        
        Tails quickly slipped out of a pair of Sonic’s shorts that he’d been wearing all morning, kicking them off to the side, revealing his bright blue diaper that was starting to sag and turn greenish in the front. He took one final look at the squirming hedgehog on the floor before turning around and squatting down over Knuckles’ face, the rear of his diaper hovering less than an inch away from his nose. The fox grunted loudly, beginning to push as a loud fart blasted out of his ass and directly into the hedgehog’s face.
        
        “Ugh, what the fuck is that?” Knuckles groaned in disgust, unable to do anything to block the smell. It was the last thing he would be able to say for quite some time.


        Tails pushed even harder, tongue lolling out of the side of his mouth as the first log of shit squeezed its way out into the seat of his diaper, causing the padding to start bulging out. It was quickly followed by a second load, then a third, quickly causing the diaper to become lumpy and bloated, sagging down until it hung over Knuckles’ nose and mouth, preventing him from speaking and filling his nose with the scent of freshly used padding. 


        The fox moaned softly, squatting down even lower in order to more firmly press the hedgehog’s nose into his diaper. He started actively rubbing his diaper back and forth across Knuckles’ face, assaulting the bound hedgehog’s nostrils as he continued to noisily pack his padding. 


        After a final loud fart, Tails finished emptying his bowels into his diaper. The bright blue of his padded rump, which had once matched Sonic’s body’s quills perfectly, had been stained brown in the back. He smirked as he looked down at his handiwork, an expression that only intensified as another idea popped into his mind. He unceremoniously plopped down right on top of Knuckles, the weight of his bloated padding completely covering his new chair’s face. 


        His act of revenge had caused the fox’s cock to begin straining against the front of his soggy diaper, creating a very obvious tent. Tails grinned, taking a few pictures to send to Sonic, along with an important reminder, before tossing his phone to the side and reaching down to roughly squeeze the front of his diaper.


        “Don’t forget, Sonic, the effects of the machine only last a few hours. That’s what you get when you keep rushing me to finish things! You’re running low on time, make sure you do everything you want to.”


        Back at Taco Bell, Sonic was sporting a diaper bulge of his own, but found himself unable to properly address it seeing as he was looking at the images with one hand while using the other to scarf down another burrito. 


        “Fuck, Tails,” he sighed as he looked down at the phone, feeling equal parts confused and aroused at the sight of his foxy boyfriend grinding his used diaper up against the hedgehog’s face. He made note of the message, and texted Tails that he was perfectly on schedule. Continuing to shove more and more food into his mouth, he realized that it was true what everyone says. Almost everything on the menu tasted pretty much the same. Sonic entertained himself by hopping back onto Knuckles’ social media profiles, sending out a few select pics, and enjoying the responses that his exhibition was generating. 


        It wasn’t long until his stomach was bulging as a result of the massive fast food meal he was consuming, quickly doing away with the echidna’s muscular physique. The cropped rainbow tank top he wore made the change in his figure quite obvious.  By the time he’d finished eating the last remaining item from his meal, a crunchwrap, his chubby stomach was churning wildly.


        “Just as planned,” Sonic grinned, pushing himself up from the table and making his way to the exit. “Now it’s time to hit the gym again!” As he pushed his way through the door, he was ecstatic. The meal was having the desired effect, and he knew that the aftereffects would absolutely destroy his overused diaper. Only a few more blocks until he would reach the gym with its giant windows, security cameras, and heavy pedestrian traffic outside. 


        The thought of using Knuckles’ body to destroy his reputation in the same place where the echidna had so thoroughly humiliated him was making Sonic’s cock rock hard. This caused it to start pushing up against the soaked padding and making an unmistakable bulge as he continued to walk down the busy street, his public lewdness and the smell of his diaper easily clearing a path through the crowd.


        It only took another minute until he had arrived at his destination, the gym. Sonic stood outside the floor-to-ceiling windows that faced a line of people on treadmills, giggling as his stomach continued to rumble.


        The echidna finally tore off the tattered remains of his blue shorts, leaving him standing there wearing the pastel cropped tank top, chunky sneakers, and bulging diaper that was now more brown than anything else, in full view of people in both the gym and the streets. He admired his own reflection in the window. There was only one thing missing to complete the book.


        “My fur is much too clean,” Sonic said with a smirk as recalled his own messy accident on this spot. He lowered himself down into a squat, raised his tail up as high as it could go, and let out a thunderous fart. The blast of gas was immediately followed by a wave of liquid shit, the byproduct of his massive lunch.


        There was never any hope of his already-strained diaper containing this new mess, and Sonic knew it perfectly well. The increased pressure caused shit to start oozing and squirting out of the diaper. Some of the blowout pushed its way out around his tail, running down the exterior of his padded rump. Most of the load, however, forced its way down around his legs and began to pool in his shoes. Where there was once red fur and sneakers, there was now just a sticky brown mess. 


        It wasn’t enough for Sonic, however. Seeing the reflection of the echidna’s shit-stained body in the window brought back all of the details of his experience, far sharper than they had been before. In that moment, he decided that it wasn’t enough for Knuckles to be seen repeating Sonic’s prior accident. He needed to top it. 


        Popping his pacifier back in his mouth, he turned so that his bulging diaper was directly facing the nearest phone camera, of which there were several to choose from, and reached a hand back to place it right on the center of his rump, getting the shit that had blown out of the diaper on his hand. He looked back over his shoulder, looked straight at the camera lens, and moaned loudly, before pushing his hand against his diaper with all of his might. He applied the force back, but slightly upwards, in the hope of achieving his desired effect.


        The pressure of his hands caused shit to start blowing out of the top of his diaper, completely coating his back. Both the exposed fur and the colorful shirt were covered immediately, with yet more shit running over the waistband and down over his hand. Satisfied that he was messy enough, and aware that he only had a few minutes now until he would be returning back to his own body, Sonic flopped onto the ground, squishing whatever shit remained in the diaper up around his ass and towards his cock. His hand that was still clean reached down to stroke his cock through the diaper, while he brought the shit-covered hand up to his chest to rub the mess into the front of his shirt. 


        Sonic remained in that position, getting closer and closer to the edge as he stroked himself, awash in the warmth of his diaper, the smell of his mess, and the disgusted sounds of all the onlookers. Everything began to grow blurry, and he realized that he was about to switch back to his own body. He squeezed his cock even harder, determined to deny Knuckles the pleasure. As his vision faded to black, he finally blew his load into the diaper, hips humping up and down as his cock twitched within the confines of the padding.


        *DING-DING*
        
        Tails jumped at the sound of his phone’s timer going off, signifying that the swap had run out of time. Instead of Knuckles the bully, he was now sitting on his boyfriend in both mind and body. He quickly stood up, and started to undo all of the restraints. As soon as he freed the hedgehog’s hands, they reached up and snaked around his waist, pulling the fox back down into a sitting position.


        “Ah, Sonic!” Tails yelped, once more feeling the pressure of Sonic’s nose pressing into his messy diaper seat. The hedgehog released his grip, and began to chuckle as his boyfriend stood up once more and finished untying him, removing his headphones and blindfold as well. 
        
        “Sorry for scaring you, Tails,” Sonic grinned, happy to hear his own voice when he spoke. “But I’ve gotta admit, seeing those pictures you took of Knuckles made me a little jealous.” Tails blushed at the unusual compliment, turning around and helping Sonic get to his feet. 
        
        “You were jealous of that?” the fox questioned, rubbing one of his hands on the back of his head as he avoided making eye contact. 


        “Absolutely!” Sonic exclaimed, raising an eyebrow seductively before pulling the fox into a kiss. As he slipped his tongue into Tails’ mouth, he reached around to the fox’s rear and squeezed his messy padding before breaking the kiss. “You can really fill a diaper,” he whispered into his boyfriend’s ear. “Wouldn’t be fair for Knuckles to get it all to himself.” 
        
        “Speaking of Knuckles, why don’t we see how he’s doing?” Tails wasn’t really asking, as he had already pulled up one of several livestreams on the television, unmuting it as he and Sonic looked at the screen.


        The camera was trained on Knuckles, who seemed to be waking up a bit slower than Sonic had. The couple both smiled in glee as they watched the drowsy echidna push himself into a sitting position, leaning his head on his hand, completely unaware that the hand in question was smeared with his own shit, as was the rest of his body. Knuckles visibly gagged at the sudden smell, and it was only then that his eyes finally snapped open, allowing him to take in the situation.


        “Oh, poor little guy!” Sonic said with mock concern, pulling Tails down onto the couch and wrapping his arms around the fox. “I think he might need a change!” Tails grinned, making sure that the livestream was being recorded onto his hard drive in case the videos were taken down before curling up with the hedgehog, his own messy diaper being squeezed between his body and Sonic’s. 


        “Not it,” Tails giggled, watching the brown echidna run out of the view of the camera and towards the locker room showers, barely able to keep his diaper from falling off completely. He turned the screen off, less interested in watching the reactions of the crowd and more intrigued by the feeling of Sonic’s padded cock poking at the back of his diaper. 


“I’m not changing him either,” Sonic smiled as he reached around to caress the front of Tails’ padding. “The only diaper I’m interested in right now is yours.” He pulled the fox into another kiss, deeper than the first, and the pair momentarily forgot all about Knuckles, as well as their own accidents, thinking only of each other. It was shaping up to be a wonderful day for the couple.


And to think, they’d only just had lunch. There were all kinds of things they could get up to during the afternoon. For the moment, at least, Sonic and Tails were perfectly content, a pair of padded lovers intertwined on the couch. 


“I love you, Sonic,” Tails whispered, still a little embarrassed to say the words out loud after keeping them in his head for such a long time. Sonic was silent at first, continuing to slowly grind his body up against Tails’ well-used diaper, until he finally responded.


“I love you too, Tails.”