FSE

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formerly SoFurry search engine

To say that Fox McCloud was exhausted would be an understatement. His dark green muscle shirt was more sweat than fabric, and his shorts clung to his matted fur like Velcro. He panted like crazy, trying to suck whatever air that he could into his lungs as he laid sprawled out along the couch. Not his couch, though; he was actually at his dad's house.

His father had been in quarantine for some time now, though he wasn't entirely sure if it was mandated by his workplace, or if it was self-imposed. It didn't really matter as it meant that his pops was here all by his lonesome. He had to do something; he couldn't just let the man who raised him stay in solitude for an indefinite amount of time.

So he decided that it'd be in both of their best interests if he moved in, at least temporarily - totally approved by their superiors, of course. Like his father, Fox stuck to the rules as much as possible. Unfortunately, that was what got his dad into his mess in the first place.

The elder fox had been out on a routine patrol not too long ago to a normally humdrum quadrant of space. It was expected of him as a certified Arwing pilot in the Cornerian Army - all members were required to do the task when their name was selected. Going to the site was a breeze, performing the task was trivial, but coming home was where it got interesting. Nothing seemed out of the ordinary when he initially landed back on Corneria, but it was only when he returned home did things get out of hand.

It started slow at first, with James noticing that his uniform now felt a bit tighter, however he was fully aware that clothing had a tendency to shrink in the wash if one wasn't careful, so he made sure to order a new set as soon as he could. He was thrilled when it initially came in, only to get annoyed that it was still a size too small for him. How could his superiors have messed up such a basic request?

To his utter surprise, they actually didn't get anything wrong at all. It was only when he was getting ready one morning that he realized the real reason behind his wardrobe issues - for whatever reason, his body had grown bigger, almost as if someone had laced all of his food with growth hormones. Not taller in the slightest, but definitely thicker, which made the revelation genuinely surprising as the McCloud family were normally fairly thin people.

But James wouldn't be one of them for long. He watched himself in the mirror day after day, taking daily measurements and pictures so that he could meticulously track his muscle growth over however long this took. The results shocked him to his core.

While his growth seemed gradual at first, almost crawling along at a snail's pace, it rapidly picked up speed without him even knowing why. What was once five pounds of added bulk was now thirteen overnight, with the next day being twenty-seven. Respectable, but lean, fifteen-inch biceps became twenty-one, then thirty-three. Twenty-five-inch thighs - which he, himself, thought was huge - had exploded, almost doubling to forty-eight in the same timespan. But it didn't stop there.

Twenty-seven pounds became fifty-five, while fifty-five became eighty-nine. This alarmed James as his average height of five feet, nine inches meant that the beef piled onto his frame far faster than on someone taller, like General Pepper. That didn't assuage his concerns all that much because even the hound dog would look unrecognizable with hundreds of pounds of densely packed musculature on his frame if someone didn't first see his face.

The rapid acceleration of his growth eventually concluded, much to his surprise and relief. He would've felt like celebrating, if he didn't see what his body now looked like, potentially permanently.

James' physique had become monstrous, with him actually thanking his lucky stars that whatever caused his breakneck expansion also widened his frame considerably. That was especially fortuitous as his weight now lay well past the scale's limit of one thousand pounds. It was to his dismay, however, that his enlarged form could no longer fit into conventional clothing unless he were to specially order something to keep himself decent. He never really used it a whole lot, but he was beginning to understand why people were so drawn to the internet.

For now, his primary goal was to remain decent, something that was easier said than done. It took a bit of finagling, but he managed to stitch together some of his smaller shirts into a makeshift jockstrap, although his bloated cum tanks would regularly flop out, meaning that more material was needed. He got a ton of shit from his peers for learning how to sew back in the day, but hey, look what was finally important!

Only that didn't solve James' problem of him needing to regularly drain his balls or else suffering from intense arousal that he'd cum hands-free if accidentally stimulated in just the right way. That, above everything else, was the biggest nuisance as there weren't any proper facilities to do his business in. He had to duck into washrooms and showers to unleash his flood, hoping and praying that this wasn't the time that the drains would clog and force everything to back up.

His orgasms were the most intense in the known universe - that was a verified fact as scientists had repeatedly experimented with his climaxes, measuring all sorts of different variables to collect enough usable data to construct the most accurate mathematical model of his godlike eruptions. It was a step in the right direction to thoroughly unearth what caused him to become like this in the first place, though in a way, it felt a bit humiliating.

But he wasn't about to sulk about his predicament and give up his life altogether. He was James fucking McCloud, and he'd gotten out of a multitude of near-death experiences that lesser pilots would've easily perished in. This... was undoubtedly weird, granted, but he could learn to work with this new, inelegant body in order to help his fellow Cornerian citizens to the best of his abilities - just as soon as he figured out how to not accidentally rip every door off of its hinges simply by opening them.

The question then evolved into what he could realistically do for his people. He was now a living wall of vulpine beef, strong enough to crumple an Arwing into a wad of metal, plastic, and glass, but far too heavy to actually fly one without irreparably damaging it. It left him in a bit of a pickle as there wasn't anything that he could actually carry out at the army base without accidentally throwing his weight around too much, so his superiors decided that it'd be in his best interest to have him be medically discharged for the time being in order to both discover the cause of his unimaginable growth, and to see if his newly gained assets could be of genuine use to Cornerian society.

Being put on med leave seemed like an absolute death sentence for James, as he was never one to just sit around and do nothing. Television bored him to tears with all of its mindless drivel endlessly playing on repeat, books that once held his attention for hours felt like a chore to read now that his choices had become limited, and he was never one for interacting with people online as his old-school mentality made him prefer real life social contact. There was literally only one thing left that he wouldn't drive him insane - his home gym.

Well, not when it was the exact same as before he departed for his patrol. It had only been set up just to keep him in shape lest he find himself in a situation that called for something more than smarts. But that was now in the past. Weights that he had no business moving before were now negligible in size, with him unintentionally crunching most of them after a fall. Something had to be done about this soon or he'd go stir-crazy from lack of mental enrichment.

Which meant that it was the internet to the rescue once again, only this time James' order was carried out significantly quicker, much to his delight. Finally, at long last, he could have something to do! He excitedly carried the boxes of new weights down the stairs and opened them, unable to stifle a laugh at the cartoonish proportions that they needed to be just so that they were heavy enough.

Working out really wasn't something that he particularly enjoyed doing, but he was immensely bored, and, hey, any port in a storm, right?

James found himself aggressively thankful that his new weights came with bars capable of supporting them as he didn't even think to purchase any, and any new orders would take at least a few days to reach his house. He often wondered if his packages were the only ones delivered at a time because of their tremendous weight.

Now eventually ready to go, he slid on what he considered to be a grossly substantial amount of weight, only for his body to not even register it at all. He nearly curled himself off of his exercise bench in surprise!

Round two went a lot smoother for James, with heftier weights actually facilitating some semblance of resistance. It still felt weird that he curled a weight well beyond the powerlifting world record for bench press - that was performed with supportive gear, to boot - but it at least gave him useful data that he monitored.

Day after day he kept at it, continually pushing himself well beyond what his wildest imagination told him that he was capable of. He wasn't even close to using the heaviest of weights that he'd ordered, but the fact that he was significantly above the weight floor for every exercise possible in his set up spoke volumes. He'd become an incredible special vulpine without even trying.

Honestly, James should've genuinely seen it coming, but his constant workout regime had actually made him noticeably bigger. It was fortunate that his industrial-sized scale had been delivered, because at long last he now had a definitive answer to the question of how much he actually weighed - that being thirteen hundred pounds. That was not a small number by any stretch of the imagination, but his keen eyesight told him that his thickness hadn't changed a whole lot while his width did. Whatever happened to him before was still affecting him now.

But even with staying busy by monitoring his changes, he couldn't shake the feeling of cabin fever creeping up on him. He desperately wanted to leave the house to have fun literally anywhere else, though knew that he couldn't. At least working out was alright in keeping him entertained in the meantime.

But James found that it wasn't enough. He missed being an active part of the Army as it was his raison d'être, leaving him distraught as he felt that his life was currently purposeless while not being able to serve. Working out certainly passed the time, sure, but he only ever did it before just to stay in tip top shape. The only reason that he pushed himself in his home gym was because there literally wasn't anything else to occupy his mind with, especially after getting wholly fed up with keeping his house as clean as possible. One canine could only make so much mess, regardless of how big they were.

And then his son offered to stay with him. Initially he protested, saying that he was fine on his own and that Fox had too busy of a life to simply pause it for him, but he quickly relented when the thought of finally being in physical proximity of another person won him over. Why the hell would he ever pass that opportunity up, especially with his own son?

That's how it had been for the last few days, with Fox hanging around to keep his dad some company. Sure, the younger vulpine still had obligations to fulfill, as well as his own social commitments, but it felt nice to James that he had someone to share his giant house with.

And that's what he did, letting his son have access to the amenities available in the house, to which Fox accepted, making use of everything like when he used to live there. Unfortunately for the junior canine, the home gym wasn't exactly what he remembered it to be.

It hadn't been that that long since his son had moved in, meaning that James quickly figured out what the other fox's schedule looked like, and knew exactly where he'd be right now. "Hey champ, got your pump on?" He smirked as he ambled into his living room.

"As much as I can with your setup. I'm totally wiped." Fox sputtered, his chest heaving with every breath. "Almost all of those weights weigh as much, or more, than I do!"

James gently leaned his swollen arm along the back of the sofa, still hearing it groan in protest. "Yeah, well, when you've got a body like mine, you need to adjust everything else in order to accommodate."

"Right, but very few of us are built like living tanks." Fox wicked some sweat from his brow. "Still kinda amazing you adapted so quickly."

"Well, you know your old man. I've never been one to wait around for things to happen." Like he was known to, James flashed his kid a winning smile.

The sight of his dad's colossal physique made Fox feel conflicted because he both did, and didn't, like what he saw. On one hand, the thought of getting intimate with his father was a boundary that he didn't feel like he should cross, with their relationship needing that level of respect to function properly. But on the other hand, if some other guy was as swole as his pops was, he'd absolutely pounce on that dude in a fucking heartbeat.

James, in comparison, had no such qualms about getting that friendly with his own flesh and blood. Sure, he was in the younger vulpine's position once, thinking that the bond between dad and son was sacred, not to be sullied by carnal desires. But now? Fuck it! He and his own father had screwed countless times since he'd gotten older, but Grandpa McCloud had yet to see him like this.

"Hey dad, I genuinely gotta ask you." It took Fox quite a bit of effort to push himself upright. "Is working out really what you're gonna do with the entirety of your time being stuck here?"

James opened his mouth to speak, as he usually already had an answer for anything, but the words didn't exactly come to him all that quickly. "I mean, ideally not." He rubbed the back of his bull neck, unintentionally feeling his traps brush the base of his ears. "The problem is that I genuinely know very little about my condition because the research scientists back at the army base know very little about my condition. I'm waiting for them to give me the clearance to re-enter society."

"God, you really are the most by-the-books member of the Cornerian Army." Fox chuckled.

"Hey, I didn't get to where I am today by cutting corners, I can tell you that much!"

It always amazed Fox how similar he and his dad were, though he couldn't help but think that it'd be better for everyone if certain people around him were as principled. "Well, I guess the military's standards have slipped because I can absolutely point out people who rose through the ranks doing exactly that."

"I wonder if the data I've collected on my own could be of some use to them. It clearly shows that I've been trending wider since perpetuating my own growth in the gym." James stroked his chin in thought.

Out of everything that Fox had learned since staying at his father's place, that was easily the one thing that gave him the most worry. Concern instantly flowed through him. "And you're actually okay with endlessly expanding your proportions out until you no longer resemble anybody currently living on this planet?"

A smile contorted James' mouth as he sighed. "I'm starting to wonder if it was really the best thing to teach you to be so inquisitive." It warmed his heart to see that his son still cared for him, even if he felt that it was ultimately unnecessary. "You don't have to worry about me, Fox. I think I'm old enough to take care of myself at this point. I'm actually waiting for the guys in the lab to say they can alter my dimensions in some way. You know, at the very least make me taller so I can maintain some semblance of normalcy."

That gave Fox an excellent idea. "Do you think they'd be able to do that for me too? There's a few guys I wanna knock down a couple pegs."

"So there are people giving you grief? Don't tell me I need to have a word with them!" It was James' turn to be the caring one, though he felt it to be natural as he _was_the younger canine's dad.

Fox scratched the back of his neck as he pursed his lips. "Well, honestly not that many. Falco's one of them, but that should've been obvious. Guy always walks around with this air of cockiness that's hard to ignore, especially when we're all just trying to shower in peace." He snickered to himself. "He got particularly annoying one time, to the point that Peppy went and silenced his squawking. Gave him a dicking the bird will never forget."

"Yeah, that sounds like Pep, alright. Surprisingly patient man at times, but even he's got his limits." James fondly recalled his time with his former teammate before he started his solo work. "And he always had a monster sausage that the rest of us liked fooling around with, even when we were all starting out! He just happened to be gifted that way."

"Oh, believe me, I know." Fox shot his dad a knowing look.

"That's good, I'm glad you guys have gotten along." James beamed. "Do you guys do anything outside of work?"

Fox enthusiastically nodded. "Quite a bit. In fact, I'm actually meeting up with the others later tonight, so I'll probably be freshening up after this."

"Oh, that's good! I went out a lot with the guys I hung with, though we did lots of team-building activities, if you catch my drift." James gave off a wry smirk.

Fox countered with his own grin. "What do you think my crew and I are out doing all the time?"

"The apple really didn't fall far from the tree, huh. Honestly, you're more like my twin than my son in a lot of ways." James patted the junior canine on the leg. "You hang out with Wolf at all?"

"Sometimes when the two of us are dogfighting we'll stop for a little action, help take the edge off of those long flights. But other than that? Nah." Fox giggled under his breath. "I bet it burns him that he doesn't have more frequent access to my ass."

That genuinely caught James off-guard. "Seriously?!"

Which in turn surprised Fox. "Sorry, am... am I missing something?"

James' guffaw boomed through the main floor of his house. "Oh Fox, you should've seen Wolf when he started out as a cadet. He was smaller than you, and totally the one begging all of us to stuff him!"

"What?!" Fox couldn't believe what his father told him. "Wolf O'Donnell... space pirate, ace pilot, mercenary for hire... was a bottom?!"

"Exclusively, might I add!" James had to wipe the tears from his eyes. "So to tell you the truth, him being the one to now fuck other men is completely new to me."

Fox was nearly jumping out of his seat despite fatigue weighing him down. "Oh man, I'm _totally_bringing that up the next time we fuck! I'll let him know that you're wondering what your little pup has been up to all these years."

James quirked a brow. "Is he gonna be there tonight?"

The question caused Fox to force his own laugh. "Not a goddamn chance! That motherfucker's got a ton of apologizing to do before I invite him to our parties!" His gaze flicked to his father. "If anything, I'd rather have you come with me, you know, relive some of your old memories."

"Believe me, I'd genuinely love to. I just need to actually know what's going on with," James sighed, gesturing to his monstrously muscled physique, "you know, all this."

Fox grimaced. "Still nothing from the doctors?"

"They've been analyzing my DNA the entire time I've been back home." James shook his head, irked at the amount of time gone by. "I gave them a ton of DNA to work with too, so I feel like they should've found something by now."

"Okay, and what about-"

"The scientists have been scouring the quadrant of space that I was in, and they can't find anything out of the ordinary." James rubbed his eyes with his fingers; he'd have thought by now that someone would tell him some news about his situation. "The level of radiation out there is well below what should affect you. Believe me, I checked myself when I was there!"

Fox racked his brain trying to think of something possibly not thought of yet. "Is it a different kind of radiation, maybe?"

"I'll have to see what the suits say." James' irritation only grew. "And it's not like I can really leave the house anyway, I still haven't gotten my clothing order shipped yet!"

"Really..." Now Fox was annoyed. "You got a custom weight set for your home gym in days, but you're going on weeks without those clothes you specially ordered?"

James threw up his hands in defeat, his disappointment immeasurable. "Could be a fabric shortage for all I know." At the very least, there was one silver lining to this whole mess - his son. He wouldn't feel nearly as good if the younger fox didn't go out of the way to ascertain his well-being. "But I'm grateful that you don't care what your old man looks like."

"Don't get me wrong, it was a total shock at first." Fox admitted, trying to keep his eyes from snapping to his dad's girthy log of foxmeat. "But honestly? I couldn't care less now if I tried."

"Glad to hear it." James wore a genuine smile on his face, relieved that his hulking frame didn't force any awkwardness into their relationship. "Alright, I know you got your plans, so I'll let you go freshen up for tonight. If you need me for anything, I'll be down in the gym."

"Sounds good."

James tossed his son a lascivious wink. "And of course, you're more than welcome to have some fun with me at some point if you'd like."

"I'm still figuring out if that feels right to me, but I'll absolutely let you know if I consider it." Fox cursed himself with being so indecisive on the topic. His mind wavered around 'maybe', but his body screamed out an emphatic 'yes'.

"I'll hold you to it, kiddo!" James turned himself around before stomping off to the door leading to the basement.

Fox didn't realize it at first, but he held his breath as he watched his father leave the room, eyes glued to the perfectly sculpted ass cheeks that could _easily_crush the automated taxi that he took to get here without trying. It felt like he was fighting a losing battle in his mind, only he wondered why he was combating himself at all. His kink for bigger men always made him feel weird seeing as no one that he interacted with on a regular basis was anywhere near looking like that.

So it felt like a gift from the heavens that he happened to consider even coming here at all, because it felt like the best decision that he'd made in a very long time. It was just that one hurdle that seemed impossible to climb over, but it was crashing through the floor with every passing day. He looked down to his achingly hard boner and chortled. "I'm not gonna last a day."

Fox was all ready to finally have his shower, pushing himself to his feet before stretching his limbs. Even though he wasn't actually able to accomplish much, he could still push himself in his dad's weight room, at least before faltering trying to lift the second-lightest weight that he purchased. He knew that eventually one was supposed to make progress after busting their ass every session, but with those weights it almost seemed like-

Where was his phone? His eyes bulged out wider than saucers when a quick pat down revealed that his pockets were empty. Okay, it couldn't have gone far as he knew that he had it that morning. He woke up, brushed his teeth, ate breakfast, jerked off to the pics that his crew sent him from the night before, browsed the internet, ate lunch, exercised in-

"The gym!" Fox slapped his face; it must've fallen out of his pocket at some point. He sighed at his unawareness, but couldn't help wryly smirking when he knew that he had to go get it. "I'm not gonna last an hour."

The basement door had been left wide open, allowing him to hear his dad grunting like a beast as he was likely lifting some gargantuan weight that only heavy machinery could match. It wasn't until he got closer to the bottom of the stairs did he begin smelling his father's earthy musk wafting towards him, not nearly as potent as it could be as his pops had installed a hyper-efficient ventilation system in order to prevent his focus from urging him to jerk off when he planned to exercise. "Yeah, this is probably it for me."

But Fox's situation took a euphoric turn. The good news was that his phone was, in fact, in the gym like he thought. The even better news was that it was on the matted floor, next to his father benching an ungodly amount of weight. Even though the elder vulpine had barely even started his workout, those still got pumped up, much to his delight. Time for a change of plans.

James had been so focused on his lifting that he didn't even realize that he wasn't alone anymore. He mentally kept a count of his reps, so he knew that he was nearing his goal of one hundred lifts in a row. All it took was just a couple more before taking a short break, then doing a hundred reps of a different exercise. He just wished that his son could be down here to see him.

He let out a snort as he completed his set, letting the barbell clang down on its rests. He was beat, but only for the moment. It was time to- "Ah!"

Fox smirked when he heard his dad gasp, tonguing the inside of that unfathomably ripped thigh. If there was one thing that he always liked about his father's body, it was how hairy the senior vulpine was, and that only got better with the addition of hundreds of pounds of muscle. His licking unleashed more of that trapped scent, indulging in its exhilarating aroma, though that could just as easily be radiating from the turgid python come to life beside him, amplified by bloated testosterone factories bigger than his torso.

It took everything in James' power not to cum then and there, though he _really_wanted to. "I thought you were gonna say something when you were ready!"

Fox snickered, an impish grin plastered on his face. "I mean, I kinda am, right?"

"With words, kiddo." James guffawed at his son's mischievous act, reminding him of himself at that age.

"Hey, I'm using my mouth, aren't I?" Fox nosed into his dad's hirsute quad, inhaling the heady scent. "That's gotta count for something."

"Hold up a second." Still doing his best to maintain his composure, James scooted backwards into a sitting position, effortlessly scooping his son into his lap with a meaty arm. "I've been waiting for this moment, and I'm glad it's finally happening."

Fox rested his head on the cleft of his pops' pectoral shelf, a pleased, yet playful, look on his face. "To overwhelm your only son with your inconceivable amount of muscle mass?" He didn't care that his dad's cock drooled a copious volume of precum on his shirt as he was washing it anyway. He was just happy that he was actually this close instead of just imagining what it'd actually be like.

"Nah, I've been dreaming about this for a while now." The sight of seeing his overjoyed son in front of him warmed James' heart in ways that he'd wanted to feel for ages. "Honestly, you took longer to get to this position than I did."

Fox's head perked up when heard that, his expression changing to surprise. "Wait, I..." Only half a second had gone by, but his mind became overrun with thoughts. "So... you and grandpa, then?"

James sighed contentedly, remembering his first time. "Oh yeah, closer to my early twenties. We've been doing it ever since then! Up until now, of course."

"Hold on, so you..." Everything clicked in Fox's head all at once. "So all those times you two went out, you were-"

"We weren't watching movies, if that's what you're thinking." James lewdly chuckled. "Actually, I guess we technically were at some points."

Fox felt like he'd been blindsided in spite of the overwhelming evidence to the contrary. "Well, I clearly haven't been as observant as I thought I was."

"Eh, you had your priorities with flying lessons and stuff. Besides, now I get the opportunity to share some of what I learned with you! But first..." Like picking up a toy, James repositioned his son so that they were face-to-face. "You know I'd do anything for you, right? I know I've got my title and job and everything else, but all I want is for you to be okay in life."

"Yeah, I know, dad. That's honestly why I came here in the first place, I knew being cooped up this long would take its toll on you, so I didn't want you to be alone anymore." Seeing his dad's handsome visage up close and personal elicited a deep, rosy blush on his cheeks. "You know, to kinda repay you back a bit of all you've done for me."

James' heart melted at the younger vulpine's admission. "I raised a good kid." His heart fluttering, he pushed his lips against his son's, reveling in euphoric bliss as they took their relationship to the next level. Their tongues danced in unison like a choreographed fight where neither took the lead, clearly demonstrating how adept they'd become as lovers before either of them had gotten to this moment.

Fox couldn't quite understand the flurry of emotions racing through him. He was excited, satisfied, relieved, and so, so fucking horny. It was like fireworks went off in his soul. Passion raged through his body as if it had been waiting for this moment his entire life. How could he have possibly known that a simple_kiss_ with his dad could feel this incredible?

With an ardent moan, James pulled his head back, his expression displaying his utter fulfillment. "I see you've had practice."

"Gotta do something in my downtime." Fox winked at his father. He could feel the massive pole along his back throb in desire the entire time, encouraging his own libido to intensify. "Shall we?"

James watched as his son hopped off of him and got situated at the base of his cock, fervently tonguing his over-productive balls before moving onto his pole. He couldn't deny how orgasmic the younger vulpine's ministrations were, but as much as he was willing to cream himself from how talented his offspring was, he felt like he could do one better. "You know, you're always the one helping the others let off steam," he smirked while pushing the smaller canine away, shifting his gargantuan form along the bench so that his raised tail faced his son, "so why don't you take my ass tonight instead?"

That genuinely shocked Fox to hear. "Oh jeez, you're actually okay with that?! You've told me about all your conquests and-"

"Fox, I'm a grown man, I can do whatever the hell I want." James couldn't prevent himself from mustering a quiet laugh. "Now come over here and fuck me."

Fox snickered, not needing to be told twice. There would never be another time that he'd get a chance like this. With a haste that he never knew that he had, he shucked his shorts and threw them on one of the racks where he placed his phone. He couldn't remember the last time that he'd been this achingly hard, and was ready to make this count.

With his roaring arousal, James grew antsy as he waited for his son to be ready, with the only problem being that he couldn't exactly see what was going on thanks to the over-half-a-ton of bulk situated on his frame. It'd been eons since he'd taken someone up the chute, but it felt right that the first time in a long time would be his son. His heart raced in anticipation.

As much as he hated it, Fox failed to stop himself from chuckling, noting how needy his dad was from the rate at which that tailhole winked at him. Nevertheless, they were both in their respective positions for a reason. He took his place, hands coaxing a lascivious moan from his old man as he rubbed along those bulging legs, and gently shoved his face between the biggest ass cheeks that the universe had ever seen, cramming his tongue deep inside his pops' pucker.

James nearly buckled from that alone. The rapid ascension to muscly fox godhood left him with an increased sensitivity to any and all sexual stimulation, though he hadn't had the chance to try playing with his ass since growing. He'd taken toys before, yeah, but they never took the edge off like the real thing did. It made him think that he was just an old-fashioned guy all around, with his son's expert tonguefucking all but proving it to be true.

The taste of his dad's musky hole was unlike anything that Fox had ever experienced before. The smell itself was incredibly similar to his own, though almost richer due to age, but his tongue couldn't get enough. Over and over he worked his father's asshole, undoubtedly doing a good job if the chorus of moans was anything to go by. This was exactly how he envisioned this going, but only then did he realize that something was missing. "Oh fuck, I didn't bring any lube with me!"

Luckily for his son, James was now prepared whenever he and a partner were in that position. "Hey, reach around for a second."

Perplexed, Fox did as was asked of him, only for his hand to be yanked forward. In a matter of seconds, he felt his dad's gooey seed slather his appendage from the tips of his fingers to the bottom of his palm. "O-Oh! T-That's some quick thinking there."

"Now, go nuts." James instructed. "Remember, you can't be too liberal when lubing. You can always get more when you need it."

Fox grinned. "Are you sure you weren't meant to be a sex-ed teacher?"

"Clearly I'm built for it now." James reveled in the thought of getting plowed by his son. "Might as well ask if I can start one for the older guys that we work with. 'Uh, yes, I've got a condom, so now I'll need the three biggest guys in the class as volunteers'." Without warning, he felt the junior vulpine's hand circle the rim of his anus before carefully plunging in. "Oh fuck yeah, that's the stuff."

The fact that his dad's tailhole could comfortably take his entire hand surprised Fox at first, before concluding that everything about him must've grown. "Wow, you could probably take one of those bollards out front of the army base without trying now."

"Yeah, before turning it into scrap metal with a single flex." James didn't let his son react, snickering to himself when he heard the smaller fox yelp behind him. "I thought you were taught to expect the unexpected."

"Somehow I must've missed this unit of the lesson." Fox marveled at how much surface area his dad's pre covered. Satisfied with his work, he stood up, though momentarily got distracted when he placed his hands on the senior vulpine's wide ass. He couldn't help but knead the cheeks that could all the new weights around him to scrap metal. Almost made him wish that he had a pair like that.

"Hey, I know you're having fun and all back there, but could you-" James didn't get to finish his sentence before he felt his offspring's apparently prodigious rod driven into his anal cavity. "Oh, fuck me!" He covered his mouth in surprise. "Holy shit, do we have a horse somewhere in the family tree? You're huge!"

That confused Fox at first. "Wait, am I?" He never used to think that he was all that special considering some of the guys that he hung out with, but, hey, he wasn't about to refuse the compliment. "I guess it's hard to gauge when yours is so gigantic."

"No, you're definitely well above-average, easily bigger than most guys I fooled around with." James slammed his fist on the padded bench, not anticipating just how deep he ended up taking his son's shaft. "Shit, I should've initiated something way sooner if I knew this is what I'd be dealing with!"

"Oh yeah, I'd be bottoming for the pup who whored his ass to everyone during his time in the Academy, while topping the guy that fucked him the hardest." Fox's skill to remain being sarcastic while balls deep in someone else had to have come from his dad. "I wouldn't feel conflicted at all." He grunted, feeling his father's inner walls clamp down on his pole.

Yep, the mere presence of James' son's dick reaching that far into proved beyond a shadow of a doubt that he was a product of his loins. "Yeah, just give it to me now." He ordered through gritted teeth. "You know I can take it!"

Fox happily obeyed, feeling the larger fox's hungry hole try to tug him back in as he pulled out; he obliged. With aplomb, he began pounding his dad's tailhole, building up a nice pace while making the man below weak in the knees.

James couldn't help himself; his arms buckled as the younger fox's pillar tickled his insides, leaving his head to rest on his hands. He chuckled thinking of how often a guy would have their ass up for him like he did now. But he wanted this just as much as his son did, pushing back in the same rhythm that was being thrusted into him. For some reason, he wanted to prove that he could still be a good lay despite not a single person doubting that claim, lest of all his own flesh and blood who already idolized him.

It was strange, but Fox felt like warmth was radiating from his larger-than-average junk. Maybe it was the fact that he hadn't gotten tail in quite some time, or maybe strengthening his relationship with his father just made him feel that good. Whatever the case may be, he loved it, craving more of what caused him to feel this way. He relished the way that it spread through his body, filling his torso with fiery passion that he used to fuck the larger fox harder.

That warmth wasn't just a strong emotion, but he was far too lust-drunk to notice the fact. Indeed, there was more to it, pulsing his muscles with every buck of his hips. While he didn't see it, the effects were observable, his chest in particular looking a tad different. As if by magic, he suddenly had the outline of pectorals visible through the fabric of his muscle shirt, while his biceps subtly grew bigger as he flexed. He was far too focused on screwing his dad, but he knew that he felt damn good doing it!

While his son didn't notice anything, James certainly did. Little by little did the fucking feel slightly more vigourous, as if the smaller vulpine decided to put more force into it. Not that he minded, of course, as his hugemongous body could take a lot more punishment than that! Still, it lingered in the back of his mind.

The more boisterous that his humping became, the bigger that Fox's muscles inflated. It would be apparent to anyone that saw him now that he had definitive musculature, but it appeared that his body was far from finished. Larger he grew, arms encroaching on the territory of professional bodybuilders, with legs that experienced cyclists gained from years of constant movement. Had his eyes not been screwed shut, he could see how much he filled out his gym gear now.

James was beside himself with arousal. He couldn't understand why, but the hammering that his ass received felt more akin to someone bigger taking his ass. It was far from being a problem as the only person that he could even remember being this zealous in the sack was Peppy. It made him miss his time with his team, and how they kept themselves entertained on long missions. Maybe he will accept his son's invitation at some point soon.

Fox now resembled a powerlifter in their absolute prime, rather than the lithe space captain that everyone else knew him to be. Sex had never been _this_intense before, but he loved it regardless of why it felt so good. He was like a machine, pistoning into his father with gusto, the stimulation only increasing with every shove, the tension in his body flaring up to the extreme-

A loud rip sounded out in the gym, stopping him dead in his tracks. The noise clearly came from around his torso, but the fact that he only saw his now-massive pectorals when he looked down clued him into exactly what was going on. The muscle shirt that used to be almost two sizes too big for him -as he'd borrowed it from Slippy, who grew up to be an incredibly wide specimen of a frog - had been shredded to ribbons, with hundreds of small pieces laying on the floor around him, wholly unprepared for the awesome might of densely packed vulpine beef. "Holy fuck!"

His son's alarmed tone worried James, but turning around to see what was happening from his position was an impossibility. "Hey, what's wrong?!"

"I... I-I don't know, but somehow fucking you made me bigger!" Fox felt a lump form in his throat, worried that this could be potentially dangerous for the both of them. Unlike his father, he hadn't been in nearly the same number of life-threatening situations, so his ability to compose himself had been thoroughly unrehearsed.

Everything in James' mind just clicked into place. So he did notice something after all! "Fox, listen to me. Whatever did this to me is obviously what's doing that to you too, but don't panic. Sooner than later, we'll have confirmation from the guys in the lab. Just stay cool."

"Are you s-sure? I feel like maybe it's a good time to stop." Fox gulped.

"Hey," James calmly spoke, "it's okay, just take a deep breath. Does anything out of the ordinary in a negative way?"

It took Fox a hot second to compose himself enough to execute a mental inspection of his body, but surprisingly, he didn't feel anything wrong. "Actually, no. I think everything's alright, weirdly enough."

"Good. Then drill your cock back into my ass because it got so much bigger and I _need_it inside me!" James hadn't felt this needy in ages; he kinda missed it, truth be told. "Don't stop now, keep pushing yourself as hard as you can!"

Every part of Fox's professional training screamed at him that he'd be an idiot for continuing this sexual act when he couldn't even describe the entirety of its effects on him. On the other hand, both he and his dad were still alive, the two of them hornier and more attractive than ever. He made what he thought was the right decision and plunged back into his father's gaping asshole.

James moaned out in ecstatic bliss, his tongue involuntarily sticking out of his closed mouth. It was as if every pump of the younger vulpine's pelvis added another inch in length and circumference to the obelisk impaling him. He could almost cry thinking about how alone he felt these past few weeks, and yet now it was like none of his isolation mattered. His love for his offspring burned brighter than the combined forces of every sun that he'd ever flown by.

Fox was well beyond what normal people considered to be the maximum that a person could get, shooting completely into uncharted size territory, not counting his father, of course. His brawn was immensely crammed onto his frame, which had widened to be able to accommodate his burgeoning bulk. Although he could absolutely understand why the elder McCloud had grown annoyed with this kind of size whilst alone, it seemed like a trivial concern when there was someone else with similar proportions around. Their impossible statures made them the perfect match for indulging in each other's needs.

In spite of the sheer amount of pleasure coursing through his veins, James unfortunately couldn't hold out much longer. He'd already edged himself longer than he'd ever had before at this size - an act that he was stupendously proud of - but his leaking cock gushing out tons of precum by the second signaled that he didn't have much time left. Still he wanted to hang on just a little bit longer; he wanted to know what it felt like to have a musclebeast like himself jizz inside of him.

The clamping down on his monumental pillar of a cock left Fox a heaving mess, only being one that also drooled pre by the bucketload thanks to pendulous orbs that hung past his knees. To think that the older fox had been like this for almost a month already! He could barely tell because his eyes refused to stay fully open, but it kind of felt like his and his old man were close to the same size. It wouldn't be long now, he could feel it.

More and more pre spilled forth from James' length, with him barely able to hold on now that the junior - but no longer smaller - vulpine's prick flattened his prostate like a button wired directly to the pleasure centre of his brain. The jackhammering pulsed euphoria through his quivering ass and into his very being. He was so close, he just needed to keep himself together before his body succumbed to his libido. Only a few more-

Fox moaned at the top of his lungs, his pelvis slamming flush against his dad's globular cheeks, keeping all the cum that blasted past the elder fox's delicate ring of muscle firmly sealed inside. The senior canine's inner walls got painted a pearlescent white as untold litres of foxbatter flooded his father's bowels. He could barely comprehend it through the mind-numbing bliss that he endured, but his mammothian cum tanks churned up more seed in this one session than he'd ever released in his entire life. He loved figuring that out.

James roared his son's name as he climaxed, deluging the weight bench with his own off-white spunk. This single eruption had been far more gratifying than nearly a month of jerking off alone. All of his pent-up frustrations had vanished in an instant, replaced by a rising tide of relief that filled the void in his soul. It was worth it - all the solitude, the mind-numbing boredom, the reluctance in accepting that working out was his only means of alleviating the monotony of being alone - having his son fuck his ass outweighed the cost of everything that he'd been through, and he'd do it all again in a heart beat.

The insane volume of seed geysering from his crotch rocket caused Fox to double over, only able to grab as far as the elder fox's winglike lats, but the feeling of clutching muscles wide and flat enough to build a community on only made him shoot harder. He'd lost count of how many loads that he'd blasted into his father like a firehose. Time slowed to a crawl the more that his potent jism surged from his undulating cumpipe, but that wouldn't last long as only then did he feel his stream slow down. Goddamn, he couldn't wait until he got to try this again!

Pressure built up inside of James as quickly as the pressure in his prostate dissipated. His prodigious balls cared little of the boundless pleasure that they'd forced upon him, only wanting nothing more than to drain all that they had produced while he got plowed. He let them, of course, as there wasn't anything else that his lust-addled brain could make him reasonably do. It was as if the younger canine had scratched the deepest itch inside of him and released all the tension that he'd ever accumulated. Pure bliss.

Fox collapsed onto his father when the last of his cum trickled from his telephone-pole-thick cock, his face landing squarely into the small of the senior vulpine's back, inhaling the masculine aroma that had gotten trapped within. It was heavenly, smelling like a spicier version of his own that he'd develop as he got older. He was content to stay there forever until he felt the ground beneath him rumbling, abruptly remembering that it was actually his dad.

James hadn't felt this good in years. His body was to die for, his problems had all but evaporated, he was still the best pilot that had ever existed despite having not flown in around a month, and he had the most perfect son that anyone could ask for. He felt like the luckiest man in the world that he had someone who cared so deeply for him, and found him attractive just the way that he was.

The padded floor felt magnetic to Fox, who could barely get up due to his tremendous lack of energy. It took a few blinks, but he was able to see a blurry hand shoot into his point of view that he accepted with one of his own. In an instant, he was pulled to his feet, although feeling exceptionally top heavy now. He regained enough of his bearings to remember why that was. "Oh wow..." He mused at his face being scant inches away from his face.

"Now that, Fox, was one hell of a fuck right there." James beamed at his offspring, happily patting the gut that had formed from the intake of the junior canine's load. It bowed out a little into a domed turtle shell of an abgut, but it looked remarkably good on him. Perhaps he'd attempt to make it a permanent fixture on his frame.

Fox rubbed his eyes, finding out that the task had become increasingly harder due to the hundreds of pounds of densely packed vulpine beef that he had put on seemingly out of thin air. "God, everything's a blur. I can hardly remember what happened."

"I'd say I've got all the proof we need right here." James grinned, rubbing his taut gut. "Using all that protein might skew my next measurements a tad."

"Is that really what you're focused on right now?" Fox giggled; he couldn't believe his father right now.

"Hey, can't have a rocking bod without a sharp mind to pilot it." Like he'd tried at some point in his lockdown, James pulled his arms as close to his colossal frame as he could, causing his pecs to bulge out twice as big as before. "I know for sure I taught you that."

The mental image of being educated about this exact thing as a child was too much for Fox to handle. "Somehow I doubt you had this particular moment in mind back then."

"I definitely should've considered all possibilities. What kinda father would I be otherwise?" James laughed as he let his arms drop, only to whistle when he finally got a good look at the younger fox's own physique. "Jeez, boy, you're looking thick, maybe even more than me!"

"Wider, maybe." Fox clutched his chest, truthfully impressed with how his fingers couldn't dent the diamond-hard flesh. "Keep in mind, I am an inch shorter than you are."

"Yeah, that's very true. Well, I know I certainly wasn't expecting this to happen, but I can't say I'm upset with it!" James felt pride swell within him as he saw his own flesh and blood carry on in what was likely a new family tradition, however, his mind couldn't help but make the moment feel a tad sour. "Although I do apologize for burdening you with my problems now."

"Aw, I honestly don't think I mind this too much. What I do know is doubling up on that clothing order is really gonna piss them off even more." Fox playfully smirked.

Still, James felt guilty about his earlier insistence, his brain refusing to forget that. "And I completely ruined your evening tonight..." He rested his hands on his hips, shaking his head as he sighed. "I'm really sorry, Fox. I wish I could help you in some way."

"Well, I'm not all that-" Fox's eyes bulged out wide when a brilliant idea popped into his head. It wasn't the end of the world quite yet. "Wait, maybe this can actually be worked around!"

James quirked a brow. "I can't say I'm following you, but I'm all ears."

"What if I got the party to come here?" Fox's grin stretched ear-to-ear.

James was in awe that he hadn't thought about that possibility, but the rational part of his mind was uneasy with the prospect. "Do you really think we should?"

After seeing the effects that isolation had on his father, Fox knew that the only way to keep him happy was companionship. His old man had been an especially social guy his entire life, so he couldn't see any reason to stop now. "Dad, I _know_we should!"