Fullest Moon (Patreon Commission for Drewbermeister)

Everyone wondered what his costume was, and some even dared to suggest that he didn’t have one at all; Andy simply smiled, nodded and moved along as if nothing had happened, knowing full well that if he said anything, that would completely ruin the surprise. He was constantly looking at his watch, counting down the minutes until midnight while the rest of his friends were busy discussing what they were going to drink next, and the rest of the party-goers got hammered on whatever pumpkin-based concoction happened to be next to them. The whole concept of disguises and costumes was nothing more than a formality at that get-together; the real reason why him and his coworkers organized a Halloween party was to get wasted while wearing the cheapest piece of cloth they could pretend was a cape, or after smearing some red paint on their face and calling it blood. That year though, Andy had a much better idea.

With fifteen minutes to spare, he excused himself, telling his friends he was going to the bathroom to make room for the next round of vodka shots. No one really cared, and indeed none seemed to notice he was gone at all, giving him all the time in the world to slink away behind the large country house they were hosting the party at and find a secluded spot out near the woods. The sky was clearing, the cloud cover thinning out considerably, and the reflected moonlight shone cooly on his fur. He could hear the wind in the distance, could feel the chill seeping in, and took a deep breath; it was cold that night, but it soon would be red-hot, courtesy of the transformation he had lined up for himself. It would only be good for that one night, and he’d probably be feeling the headache for days to come, but if it all went according to plan then everything would be worth it.

Andy removed a small autoinjector from an inner pocket, then lifted his sleeve and pressed the needle hole against his arm. The pinprick hurt somewhat, but the accompanying anesthetics made it easy to endure; after that, the chilliness began to vanish gradually, replaced by a rising heat building up asymmetrically inside of him, spreading from the injection spot all the way to the other end of his body, filling him with a sense of raw power that he hadn’t experienced since the last time he and Rebecca got frisky with chemicals in the bedroom. When he opened his eyes, it wasn’t darkness he saw in front of him, but an alien colour gradient that it took him a few seconds to realize was infra-red, the predatory instincts kicking in when his heightened sense of smell began to pick up the surprising amount of sexual pheromones being produced by a few happy couples inside of the house. Up above, the moon sat, waiting for him to look up towards it.

So he did.

His clothes became very tight all of a sudden, as if they’d just shrunk down several sizes, leaving Andy feeling like he was being gripped from every direction. This lasted for only a few short seconds, as the cloth was rapidly ripped to pieces and turned into little more than tatters hanging off of his form as it bulged outwards, his arm and legs sculpting themselves as their constituent muscles inflated with extra mass, his torso widening and thickening to meet the demands. His whole body was expanding in spurts, with each heartbeat bringing the moon-activated serum to the rest of him, spreading the corruption until it permeated every inch of him, every vein, every capillary; the fox looked to the side and marvelled as his biceps seemed to grow whenever he flexed them, looked down and grinned maniacally at his rock-hard pecs and six-pack abs. He looked around and felt like he was on top of the world when the trees grew smaller by the moment, seven feet of height being cleared, then eight, then nine! Andy found himself at a good twelve before the transformation petered out, and yet somehow, that wasn’t the best part of it.

The serum had been advertised to him as a general enhancer, and that meant more than just giving him an athlete’s build and enough size to topple over a small house. Down below, between his legs, hung a monstrously large cock, easily long enough that, even though it had just been coaxed out of its sheath, it already hung close to his knees, with an accompanying set of balls that swung ponderously with each movement, overinflated yoga balls that squished heavily against the inside of his legs. He could feel them clench slightly every few seconds, coinciding with spurts of precum firing from his tip, one that was pointing upwards rather than towards the ground; his member was already almost fully turgid, the transformation having been enough to leave him hot and bothered all over, and it didn’t take a lot of convincing himself before Andy had both of his hands wrapped tightly around that shaft, pumping it for all it was worth.

His stamina seemed to have been improved as well, because he certainly didn’t recall any time in the past where it took him that long to achieve climax. He must’ve spent a good fifteen minutes stroking himself, eventually succumbing to the need and rubbing his cock against his own chest before finally hitting his limit, thick ropes of cum firing from his turgid rod and slamming heavily against the underside of his chin and the side of his face, after the fox hugged that beast as close to his chest as possible. The vulpine giant collapsed, the ground quaking when his body fell onto it and kicked up large dust clouds, obscuring his vision… but not his sense of self.

He didn’t want to believe it at first, especially since it hadn’t been listed as a potential side-effect, but he was still growing. Whether it had always been happening and he just didn’t notice, or if it was a result of his orgasm, he didn’t know, but he could feel the earth shift and move underneath him as his legs grew longer and his torso even wider. Down below, those nuts of his were digging large grooves on the dirt as they continued to fill, Andy’s spunk pooling into a small lake behind him, spreading in oddly misshapen globs once his head hit it at full speed. His entire frame was glistening underneath the moonlight, small droplets of sweat reflecting its light back and showing off every contour of his toned musculature. And just as quickly as it had restarted, it stopped again, giving Andy just enough time to breathe in and try to make sense of the situation.

He was clearly much larger; sitting down placed his head nearly as high as he had just been standing up, and that came with a proportional boost to the rest of him too. He didn’t want to get back up, since that would alert everyone as to what had happened to him; he did want to show off, but at no point did Andy expect the growth to be so severe that he’d end up being nearly as tall as their party house! Surely his friends would be more terrified than aroused, even if he was swinging around a cock that was longer than most of them were tall, along with… wait, what was he saying? Of course they were going to be aroused by that! They were all drunk off their asses too, why would they care if he showed up like that?

Indeed, everyone’s reaction to the sudden emergence of the colossal fox was to start clapping like idiots and loudly proclaim how that year’s entertainment was really pulling out all the stops with the VFX budget, nevermind the fact that there were no visual effects earmarked for that year (not after the utter disaster that had been the 2018 celebrations). A few even went so far as to get up from their chairs or their spots on the ground and stumble towards Andy, who was both highly confused and incredibly amused at how little of an impact his arrival had; surely, at some point, someone was bound to question why there was a literal giant fox wielding a cock bigger than most of them were… and yet no one did. It was as if he was the most normal thing in the world, at least when viewed through the lens created by several shots of unholy, high-alcohol-content mixtures. This at least gave him some room to be comfortable in, since if no one was going to kick up a fuss about it, he could afford to show off to everyone.

Unfortunately for him though, his body had different plans. The serum was either tainted or he was sold on the wrong thing, because the second the cloud cover overhead cleared away and revealed the full moon again, Andy felt that familiar tightness spreading inside of him again. His eyes shot wide open, trying to take in his physical form before it began expanding again, his mind racing with the possibilities; surely it had to stop at some point, no? He couldn’t just… keep going, could he? And if he could, then would he want that? Would he want to become a macro-sized vulpine infused by moonlight for as long as the serum was being pumped through his veins? At first he might’ve said yes, but without Rebecca by his side, it all felt just a bit too lonely for his taste… though all of those highly excitable little ones underneath him were a good consolation prize.

Many of them had to clumsily roll out of the way of Andy’s paws, which began digging large trenches on the ground when their next growth spurt hit them, the fox giant’s claws sinking deeply into the earth and excising huge chunks of rock whenever he raised his feet. He stumbled backwards, having to twirl around to avoid slamming into the house and utterly destroy it, what with his head now being as tall as the roof, and within seconds taller still; somehow, against all odds, Andy had outgrown the three-story country home they rented out for their party, and if not for the fact that it was a small manor, he would’ve been wider than it was as well! Every breath he took flooded him with the cold night air, a stark reminder of just how colossal his body was, serving to bring him back to reality whenever he began feeling too hazy or unsure of the details; every breath reset him, unwilling to let him go too far deep into the pit of self-indulgent madness gnawing at his very core. He wanted to give into it, wanted to willingly surrender and do something about that torso-length shaft of his, but he couldn’t, not in front of everyone else; even the drunkest of the drunks were starting to wonder just what exactly was going on, and why their supposed VFX show was leaving gashes on the ground and ripping large sections off the roofing when it was just supposed to be a spooky hologram. A minority had finally convinced themselves of the reality, though strangely enough they began to step forward rather than try and put some distance between themselves and Andy; the fox, for his part, had his nose inundated by a mounting cloud of pheromones, signalling to him just what exactly was on those persons’ minds. He couldn’t blame them, to be fair, not when he was both completely nude and actively trying to show off both his immense package and ripped, bulging body; he’d be more insulted if they didn’t try to jump his bones!

Though this did pose a bit of a problem, because what exactly was he supposed to do when even the largest of his friends and coworkers weren’t even enough to take his tip, much less the rest of the gargantuan shaft he had attached to himself? Without Rebecca there to “help” him, clearly the only way to go about it would be to service himself, but what about everyone else?

The answer came from an unlikely source: one of the people in charge of the accounting department, a vixen who could not handle her booze regardless of how many snacks she tried to smother it with, began to climb one of his legs. It was haphazard and didn’t really work, plus Andy had to catch her after she fell when halfway to his knee to stop her from hurting herself, but it gave everyone else the same idea; within just a few seconds, most of the party-goers were nipping at his heels trying to find some leverage in order to climb his towering frame, prompting the giant fox to do something about it… which he did, by allowing his instincts to kick in and slowly falling backwards until his back was flat against the ground. Just like that, no one had to endanger themselves to climb onto him, and now they could also pick any part of his body they wanted to attend to!

Predictably, most of them went for the exact same three spots, though surprisingly a vast majority went with his two colossal cumtanks rather than his shaft, which gave him the perfect opportunity to finally do something about that aching pressure he’d been feeling for some time. Finally on the ground, feeling that monster throbbing against his chest, its tip directly above his head and showering it in pre, it’d be hard not to succumb to the desire to open his mouth wide and welcome his own cock into it, which was made slightly difficult by virtue of the full moon shining on him again.

Andy almost choked on his own length when the next growth spurt forced his body to take up even more land, one of his feet barreling through the walls of the house and ending up emerging from the other side, all while that shaft he was carrying grew so long as to go past his head, and thick enough to cover a good half of his torso, now looking more like a leathery oak tree than anything else, and one that oozed gallons upon gallons of thick seed every second to boot. Andy was exhausted, and yet he still wanted to keep going, to push his body past his limits and to force it to give him the pleasurable release that he desperately needed and was denied by the latest moonlight infusion. His hands moved of their own accord, stroking that massive rod of his, while the party-goers found new and inventive ways to have fun with a body that large and well-endowed. All Andy himself could do was give in to his instincts and surrender his better judgement to muscle memory… and then hope that things figured themselves out down the line.

Besides, the clouds were clearing up again. And the serum was nowhere near done.