FSE

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formerly SoFurry search engine

Opening Unknown Attachments

By Danath (danath.sofurry.com)

Characters (c) ancientonyx (ancientonyx.sofurry.com)

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"C'mon, stud, you can do better than that!"

Robbie grunted and tightened his grip around the mouse's hips, pulling him firmly back against him, driving his shaft to the hilt under the smaller male's tail.

"Not bad, not bad..."

The rabbit bit his lower lip as he felt the mouse's cheeks clench up around him, squeezing and squirming, so hot and warm and tight...

"What's the matter, stud? Getting close?"

The mouse flexed his thick rump again, pushing back against the rabbit's thrusts. Chet's fingers dug into the mouse's fur, grasping at him as he leaned over, chest to back with the smaller male, gasping and biting at his lower lip.

"This oughta do you," the mouse said, giggling.

Robbie felt the squeeze again and pushed forward, cock flexing, throbbing, aching, right on the edge. His mind blanked out as he felt the mouse arch his back against him, hips out, rotating around his cock. Robbie couldn't help himself. He wrapped both arms around the mouse and flexed his body, tipping back as he felt the surge of white hot pleasure rush through him.

"Ooh, not a bad load," the mouse said, still giggling as the muscular rabbit's hips flexed against him. "Didn't last as long as I thought you would, stud!"

Robbie's ears draped down the back of his head, held down by his red baseball cap, currently turned around. Drips of fresh seed ran down his egg-sized balls and drizzled into his shorts, currently tangled up around his ankles, as he leaned back forward, breathing hard and shuddering with pleasure. He seized up as the mouse clenched around him again and grunted, both paws shivering.

The whole time it had been like that. The confident little mouse teasing him, mouthing off, even comparing him to other males at the beach that day. Robbie couldn't resist the invitation into the changing room, though, and despite the mouthy mouse's teasing, did his best to change the smaller male's mind. To no avail, it seemed.

A slim gray paw reached up and patted Robbie on the cheek.

"Don't feel bad," he said. "You aren't the first wannabe top to disappoint me. Good effort, though."

Robbie opened his mouth to snarl something back, but the rodent chose that moment to clench his bubble-butt cheeks again, and all Robbie could manage was a gasp of pleasure as his shaft flexed again in response.

"By the way, I put myself in your phone," the mouse said, lifting his other paw up. "You were kind of distracted. Hope you don't mind. Give me a call sometime if you wanna try again."

Robbie snatched his phone from the mouse's hand. How had he even managed to get it out of his shorts during all that? The rabbit pulled his hips back, only to seize up as the mouse wiggled his hips and clenched again.

"Heh... sorry, couldn't resist."

The mouse leaned over, showing off his fat rump to the gasping rabbit, and grabbed his shorts, pulling them back up under his tail. He tied off the string around the front and turned around to give Robbie a peck on the cheek.

"See you later, stud," he said, giggling.

Robbie glared at the mouse's backside as he walked towards the door of the changing room, only to blink as the bright afternoon sun momentarily blinded him, obscuring his view of the mouse's thick hips. He felt ashamed of himself, but only because the mouse was so... mean. Robbie leaned over and pulled his own shorts up, tucking his half-hard shaft back into his boxer-briefs. It wasn't like he was a small guy, he thought. Just over six feet tall, a nice thick eight inch cock, muscles all over from working out and surfing... just what the hell was that rodent's problem? Not satisfied?

Robbie tugged his tank top down over his abs and took a few deep breaths, trying to calm down. He took off his hat, smoothed down his yellow hair and long ears, then put the cap back into place.

His phone buzzed. The name "Chet" appeared. Robbie's eyes widened as he saw the picture attached to the name was a selfie of the mouse and him mid-coitus. Robbie's cheeks reddened under his white fur as he realized he looked fairly silly - eyes closed, head back, arms outstretched - while the mouse was flashing a thumbs up with a shit-eating grin all over his small muzzle.

Robbie tapped his screen to open the message.

"Hey, stud! Thanks for a fun time, sorry you weren't quite up to snuff. Everyone has a bad day, huh?"

The rabbit resisted the urge to throw his phone and instead stuffed it back into his pocket, then headed outside. He walked through the crowds of people on the beach and boardwalk, ignoring everyone around him, a dark cloud on an otherwise bright and sunny day.

"Mouthy little bottoms," he muttered to himself.

He was in a funk the whole walk back to his apartment, but after a shower and some food he felt better. The rabbit distracted himself from thinking about the mouse and his tight, round rump by watching some television with his dinner when the phone buzzed again.

Robbie glanced at it. Another message from Chet. Well, that fucker could wait.

The rabbit grinned as he got a few more messages over the next couple of hours, but kept ignoring them. Let the mouse stew, he thought.

That night, he tried to get to bed, but couldn't sleep. He kept seeing Chet's gray bubble butt pressing out against him, big and round and firm, so easy to grasp. Big pawfuls of mouse flesh... nice wide hips... slim belly... smooth chest...

Robbie made a mess of himself thinking about the mouse before he finally managed to get some sleep.

The next day, his phone buzzed early in the morning. He started awake and grabbed for it, only to scoff when he saw the picture of Chet flashing a peace sign with him in the background.

He tapped to open the message. Maybe if he responded the mouse would stop texting. There were a few messages, most along the lines of, "Sorry for hurting your feelings, you're not that small" and "Wanna meet up again so you can have another go? Make you feel better!"

The last one, though, was different: an attachment of some sort. Robbie opened it up without thinking, only to curse out loud as a jolt of electricity from the phone zapped his paw.

"What the fuck?" he gasped.

The fur on his paw smoked as he rubbed his fingers against his belly, smothering the heat. Worried, he grabbed his phone, but it didn't appear to be broken or shorted out or anything like that. And the message Chet sent was no longer there.

Weird, he thought. Then he saw the mouse's grinning face again in the thumbnail and sighed.

"Meet you same place, 11 o'clock" he typed.

"See you then, stud!" came a reply moments later.

Robbie grunted, cock already half-hard in his boxer-briefs just thinking about getting another crack at the mouse's rump. He'd show that mouthy little bottom who the top was...

The rabbit was distracted from his thoughts by a tingling sensation in his paw, though, and he turned his attention to it. His fingers looked normal, but his fur stood on end all the way up his arm.

"What the fuck..."

Robbie's heart thudded in his chest as the tingling spread across his pecs, down his other arm, and into his belly and legs. His wispy tail flicked as he flexed his arms and twisted, trying to get rid of the feeling. It was kind of like his whole body was asleep, but without the loss of sensation. In fact, he felt more alert than ever.

The rabbit groaned as he felt his pecs twitch and pressed his palms flat to his chest. His cock jerked in his shorts as he sat up in the bed, gasping. His phone buzzed again and he automatically looked at it as he felt his nipples harden up under his fuzzy fingers.

"Hey stud, hope you like that app I sent!" he read on the screen.

Robbie shuddered as his nipples hardened further. He was getting really aroused, he realized. In fact, his nipples were starting to ache as they pressed out from the dense fur coating his hard pecs.

"What app?" he texted back.

"You'll see. Lemme know when you get there. Maybe you'll be able to do a better job now lol xD"

The white rabbit let out another moan and dropped his phone onto the bed. A surge of lust filled him as he pressed his paws back to his chest, then stroked his aching nipples with his fingers. His head lowered, looking down at himself. His nips felt... strange. Bigger. He stared at his pecs as he watched himself breathing. He wasn't sure... was he bigger? Something was odd.

Another bolt of lust made his jaw draw open, though, and he leaned back in the bed, arms stretching out to the sides. His hips pushed up into the air as his erection surged, thickening and hardening in moments to the most intense arousal he'd felt in years. Robbie's eyes closed as he felt blobs of pre-cum pulse from the aching tip, soaking through the fabric of his boxes and rolling down towards his hips.

"Nnnggg... what the... what the fuck," he gasped.

His paws returned to his chest, then his belly. His abs felt deeper, harder. He'd always been proud of them, but now he could feel them more defined and cut and ever. And not just a six-pack, but a full-on eight-pack of muscle under his white belly fur.

He lifted his hips off the bed, groaning again, thrusting into the air, shoving his shaft upwards. His rump clenched, hard as steel, each cheek inflating to the size of basketballs under his short tail.

The rabbit's underwear stretched lewdly across his bulge, outlining the growing veins running up and down the length, from the broad base now as thick as his wrist up to the tip, which was definitely more than the eight and a half inches it was yesterday. Robbie groaned and clenched his teeth as another surge of pleasure forced thick shots of pre-cum out of his cock, soaking down his hips. He returned his paws to his chest and grasped at his nipples, each one now fat and round as a shot glass, protruding through his white fur like pink bullets. When he flexed his chest, he could see the movement of his pecs more clearly than ever.

Robbie rolled out of the bed, groaning and grunting as his shaft stretched his boxer-briefs out in front of him. He made it to the bathroom and stared at himself in the mirror. Or rather, he stared at half of his face in the mirror and the body of a world class bodybuilder. He'd grown taller and thicker all around, close to seven feet at least. Robbie curled his biceps and shuddered, feeling the power in the massive balls of flesh on his arms.

"Fuckin' huge," he grunted, ears twitching down the back of his neck as he heard his voice, now at least an octave lower than the day before.

The rabbit's legs bulked up as well, thickening from the calves up, all supported by broad and powerful feet. Robbie shivered with pleasure as he used his paws to stroke and massage his overgrown pecs and nipples, then turned to check out his round bubble butt in the mirror. The muscles rippling down his shoulders and back were clearly visible under his pelt, despite his pelt appearing longer and fluffier than before.

One of the growing rabbit's ears twitched as he heard his phone buzz in the other room. He tried to walk lightly to it, but his massive new feet sent heavy thuds echoing through the floorboards. Hopefully the downstairs neighbors were awake already.

Robbie's painfully tented arousal flexed again. Besides his growing stalk, now over a foot in length, the rabbit's balls pressed outwards, adding to the strain on the semi-stretchy fabric. By the time he'd made it back to his bedroom, he had to turn sideways to fit through the doorway.

"Nnfff... fuck," he gasped, as another thick swell of pre-cum rolled from his tip, through the fabric, and down to his soaked nuts.

The phone buzzed again. Robbie grabbed it in his fingers and lifted it up towards his face. The buttons were hard to press now, so he used the tip of a short claw to unlock it.

"Hey stud, almost 11... you coming or what?"

Chet! The mouse! Was this his doing? Robbie's eyes widened as he got another message, this one a picture of Chet in the changing room from yesterday, leaning forward, ass towards the camera, shorts halfway down.

Lust gripped the big, muscular rabbit. His whole body flexed as the growth finished, leaving him an awe-inspiring seven-and-a-half-feet tall, probably over three hundred pounds of muscle. The rabbit's erection flexed again, and finally the seams of his underwear gave out. The soaking wet fabric tore in two as his massive shaft forced its way to freedom and rose into the air. The thick stalk reached past his ten-pack abs to just under his bloated pecs and fat nips. The rabbit's paw slid up the length, cradling it.

"Fuck," he gasped again. His meat twitched in his palm, still dribbling pre-cum, an excessive amount. He sniffed the air, realizing there was some unusual smell, only to discover the source was his own musk, now amped up and filling the apartment.

Another message from Chet, another dirty picture. The rabbit groaned, eyes widening.

Oh, yes. He'd show that mouse. Pleasure and desire grew in the big rabbit's oversized body, pushing aside any worries over his unexpected growth. All he could think about now was putting that mouthy rodent in his place.

His tank top barely stretched over his chest, leaving his fat nips poking out through the neck hole, though fortunately he was able to get his arms through. It covered less than half of his belly, so that his abs were mostly exposed.

A fresh pair of underwear broke within moments of tugging them over his huge thighs, ripping into pieces the moment his fat shaft flexed. Grunting, Robbie skipped the underwear and found his largest pair of shorts. Fortunately, they managed to cover him up without getting too tight.

He left the apartment holding a large towel in front of him, as though he were heading to the beach, but really it was to hide the lewd bulge of his erection, which was already leaking through the fabric and leaving a trail of dribbles behind him as he made his way down the stairs to the street outside.

People stared as he passed by, but he relished the attention. He was fuckin' huge now, and he wasn't afraid to show it as he passed by crowds of beach-goers. The rabbit's walk was confident, swaggering, as he thudded his way barefoot down the crowded sidewalk. People moved out of his way as he approached, head and shoulders taller than any of them.

The changing room came into sight as Robbie heard his phone buzz again. He fished it out of his pocket with a couple fingers and glanced at it. The mouse, again, this time a front shot showing off his belly and bulge.

Robbie smirked.

Chet was in the middle of another semi-nude selfie when the door to the changing room slammed open. The mouse stared, eyes wide, mouth open, as the massive rabbit, nearly eight feet tall, crouched to enter.

"Oh, shit!" Chet said, backing up. "Wasn't supposed to make you that big!"

Robbie grunted as he slammed the door behind him and dropped the towel, revealing the awe-inspiring bulge of his length twitching and drooling in his shorts. Pre-cum pulsed out of the tip and cascaded down the fabric to drop onto the cement floor by his toes.

"Seriously, dude, I was just playing," Chet said, scrambling backwards. "It was just supposed to make you a little bigger... not a giant... oh shit!"

Robbie grinned as he reached out and plucked the squirming mouse from the floor by the back of his neck.

"You sure about that?" he asked. "Seems I wasn't big enough for you before... so let's find out if I'm big enough now!"

The rabbit's deep voice boomed through the changing room as he held Chet in mid-air. The mouse stared, open-mouthed as Robbie slowly peeled his shorts down, revealing inch after inch of rump-destroying shaft. The veiny red length flexed above a pair of nuts nearly as big as Chet's own head. The mouse groaned as his nostrils inhaled the rabbit's musky scent, while Robbie casually stepped out of the stretched shorts and turned Chet around, shoving him onto his belly on the changing room bench.

"Let's... let's just talk about this, stud," the mouse said. "I'm really sorry, I was just teasing you!"

"You are quite the tease," Robbie said, his voice dropping another octave. "Let's consider foreplay finished."

The rabbit's immense stalk pressed downwards, poking beneath the mouse's tail, spreading the rodent's plump bubble-butt wide. Chet let out a groan and clutched his fingers into the wooden bench as Robbie straddled the seat, a huge leg on either side, while pushing forward, grinding his flexing, pulsing tip deeper between the mouse's clenching cheeks.

"You're big enough! You're big enough! I swear!" the mouse groaned. "Just... go easy! Ahhh!"

Both rabbit and mouse let out lustful groans as the bigger male's shaft opened Chet's tail hole and shoved inside. The first few inches were easy as the girthy member flexed deeper, but Robbie had to use his paws to hold the squirming mouse in place to keep going. His thumbs pulled the mouse's cheeks apart as his paws wrapped around Chet's hips, holding him still.

"Big enough for you now, bitch?"

Robbie's laugh echoed in the room as Chet's cries of pleasure and pain echoed soon after. The gray-furred male squirmed helplessly as the muscle-rabbit's thick shaft stretched him open, going deeper and deeper, all while pints of thick, musky pre-cum pumped inside, making the mouse's tight hole all the slicker.

"I think you ought to have a better view of this," Robbie said. His paws squeezed and turned, rotating the moaning mouse around on his shaft like a spitroast. Chet's eyes widened when he saw the huge male looming over him, bulging pecs stretching the taut tank top, abs rippling, arms flexing.

"Oh, fuck me," Chet gasped, both paws reaching out, gripping onto the rabbit's fat nips.

"Will do."

Robbie shoved forward, pumping hard, grinding deeper before pulling out, only to stuff even more of his stalk back inside. The mouse cried out as he hung onto Robbie's pecs; the rabbit's muzzle opened and his tongue dropped out as he felt the mouse clenching uncontrollably around his oversized cock.

A few more deep, humping thrusts and Robbie managed to fit himself entirely inside the awe-struck rodent. Chet's fingers tugged at the rabbit as he stared down at his belly, watching the flexing, moving bulge of the rabbit's shaft inside him. Robbie grunted and pulled his hips back, both paws holding the mouse's hips tight, fingers digging into the rodent's plump backside, and then pushed back in, slow and steady, working the mouse loose enough to where he could properly fuck the gasping bottom.

"Nnnggg... so big... ahhhh... yes... no... don't stop!" Chet moaned. "Deeper! No! Nngghhhh!"

The cocky, disparaging attitude from the previous day was gone, obliterated by the rabbit's huge size. The big male leaned over, down, arms stretching out to hold himself over top of the mouse and the bench, as his hips methodically pumped deep and hard, speeding up gradually as the mouse's belly filled with pre-cum. Robbie's chest lowered further, muffling the groaning mouse, massive pecs surrounding the smaller male's muzzle.

Robbie's deep grunts echoed through the changing room as he humped harder, faster. His powerful legs stretched out behind him, claws digging into the cement floor, scratching it up as he flexed and strained. Each rough hilt sent a jolt of pleasure through his aching body, and his floppy ears wiggled as he heard the mouse beneath him alternatively begging him to stop and begging him for more. The muscular rabbit grinned and wrapped his paws around the bench and mouse at once, holding the smaller male in place, thumbs pushing into the rodent's hips and belly.

One, two, three strokes every few seconds as the rabbit picked up the pace yet more. Chet's belly distended with cock and cum as the rabbit went wild, hammering his hips home, smacking his massive nuts into the mouse's fat rump. The smaller male's cock jerked and throbbed, a pitifully small member compared to the one plunging deep inside his tail hole. Again and again, faster and faster, until Chet's body rocked back and forth as though he was trying to lay down during an earthquake.

"Nnnnfff... fuuuuck yes!" Robbie groaned.

The over-muscular male shoved in hard, deep, right up to his fuzzy white sheath. His belly pushed down, flexing against Chet's stomach and shaft, pushing his own bulge down into the mouse's body. His arms locked into place as his toes curled against the cement. Chet's arms twitched as they were squeezed against his immobilized body.

"Ahhhhhhhh!" the mouse cried out, wriggling and humping desperately back into the rabbit's body. "Yes! Yes! Yes!"

The flood of seed erupted from Robbie's shaft moments later. Chet's belly expanded, round and fat, but it wasn't the only thing that grew. The mouse's hips filled out nicely, squeezing back into Robbie's paws, followed by Chet's pudgy rump, which soon draped down the side of the bench. The mouse gurgled as his bloated stomach overfilled, all while Robbie leaned in, crushing the male beneath him, squeezing him tight, keeping the warm, clenching hole around his aching, flexing shaft.

"Mmmfghghghhh!"

Chet's eyes went wide and blank as seed spilled out of his lips, over his tongue, and poured from the corners of his muzzle down the side of his head onto the floor below. More cum poured out of his rump, squirting around the tight seal of eight-foot-tall rabbit's oversized cock. The cum-filled mouse could only gurgle more as the rabbit's thrusts picked up, resuming in short order, even as more seed pumped steadily from the thick tip.

"You left before I could show you yesterday," the huge male said, leering down at the gurgling, moaning, orgasming male beneath him, "Maybe I wasn't the biggest guy you'd ever had, but guess what?"

The mouse's wet eyes stared blankly up at him as white jizz poured from his nostrils and muzzle.

"Rabbits don't just do it once," Robbie said, leaning in close, a lewd grin stretching across his muzzle. "We do it lots of times."

The mouse's tail twitched as his fingers and toes curled up. His belly bloated as the rabbit's hips shoved forward again, burying his stalk deep, a second eruption rapidly following the first, forcing more rivers of cum to shoot out of the rodent's bulging cheeks.

"Two down... only a few dozen more to go!"

The end