Commission: Muscle Milk

Story by AstroSecant on SoFurry

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#28 of Commission Works

The Watchman wanted some short stories to go with some images he got. They're meant to sort of fit in between the last two larger commissions he got, continuity-wise. He's also promising me a thorough idea for another larger offering with that continuity, so there will be more to see!

OBLIGATORY CONTENT WARNING: This story contains sexual acts between two males, rough sex, size difference, drinking, and some probably terrible innuendo.


Snivy knocked hesitantly on Lucario's door, feeling a bit of a rush in his chest. An invitation to one of their private rooms was something special, and he knew what was going to happen in there...well, at least the general theme of it. He wasn't sure exactly what Lucario was in the mood to do with him, but whatever it was, he would enjoy it for sure.

The door creaked open, and the tall, muscular figure of Lucario towered over him, grinning down eagerly at the slender form of the snake at his door, smiling shyly. "Ah, nice...come on in. I've got something special for you...you remember how I said once you were old enough, I'd have my first drinking experience with you?"

"Oh! Y-yeah!" Snivy's eyes lit up as he dashed in. Sure enough, the six-pack of beer was sitting on a table, ready for consumption. He'd just gotten old enough to partake, but hadn't yet been able to get out and enjoy it...getting personal attention from Lucario to let him imbibe was doubly awesome. The idea that being drunk might facilitate what Lucario planned to do with him later didn't occur to him in his excitement.

The canine's big paws cracked open the cap on one of the bottles; it wasn't supposed to be a twist-off, but it was easy for Lucario to make it one. He handed the bottle to Snivy, beckoned him to sit in one of the chairs, then took his own and clanked it against the snake's. "To legal drinking age, so you can make all the mistakes we did!"

"Yeah!" Snivy tilted his head back and slugged down a generous amount of the beer. The taste was a bit harsher and more bitter than he had expected, but there were also fruity tones in it that were perfect for him and took some of the edge away. It wasn't that hard to get him to down the entire bottle, and ask for another...and then another. Lucario didn't hesitate to keep providing, as long as he could; after all, it was Snivy's gift, and it would be nice to see him all loopy and easy to work with.


The six-pack ran out in less than an hour, and Snivy had been the drinker of five of the bottles. He was leaning back in the chair, giddy and hiccuping; his mind was well out of it, as small as he was and as new to liquor, he'd been drunk properly by three and five had only ensured that it would stay that way for a while. "Y-yeah...yeh've been...so good, Lu...Luca...Lucario...made it shpecial...ah...whoa, it's so weird..."

"Heh, you'll either stay away from it or get used to it, one of the two." More likely the second, Lucario knew, Grass-types got intoxicated more easily due to their low toxin resistance, but tended to recover very easily from them as well.

"Ah, yeah...hey...oof..." Snivy pushed himself up a little more, eyeing the table. "There ain't...no more. Ah, I hogged all the booze...shoulda...shoulda saved a couple...more for ya..."

"Heh, no worries...I think there's an easy way for you to make it up to me." Lucario stood and whisked Snivy up with one arm, bringing him over to the bed and tossing him gently down on top of it, face-up so the snake could get an eyeful of his body. "I already know the answer, but I wanna hear how you say it drunk off your ass, so...like what you see?"

"Hohhhhh...yesh...so much...so much to liiiike..." Snivy was entirely engrossed in the figure looming over him. The powerful canine had such a body, every inch looking like the absolute pinnacle of fitness. So amazingly muscular, from head to toe, he looked like a conqueror, someone who could stand up to anything; a raging Tyranitar or charging Aggron would've been no match whatsoever. He'd seen it so often, yet it never seemed to get old, he could've spent days just looking at Lucario, and lusting over him.

There was definitely a bit of envy in there as well; he wished he could have a body like that himself. Snivy himself was almost the exact opposite, his frame was effeminate, wider hips and a slimmer chest, and hardly a fraction of the bulk that Lucario had. He worked hard during their family workouts, but it never seemed like he gained much in the way of mass, just more and more tone. He wasn't sure if he was doing it wrong or if it was just a quirk of his body, but there wasn't much he could do except keep trying.

Lucario was fully aware of this envy and desire, and he was only too happy to be the object of Snivy's attention...and, of course, he was plenty happy to return it as well. "Still haven't grown any? Maybe you just need more muscle milk." He fondled his sack as he said it, as if the implication needed to be any more obvious. Above that, Lucario's cock was rising out of his sheath, the long, incredibly thick organ oozing precum liberally from the tip. His pungent musk was filling the air, driving Snivy crazy with need; his own, shorter and slimmer cock, a fair match for the size of his body, was hard as could be.

Without even being directed, Snivy rolled over onto all fours, raising his rear end up and hiking his tail to present his ass to Lucario. It certainly wasn't inexperienced with cock but for the size Lucario was packing, he might as well have been a virgin; there was no way he was ever getting used to that monster. And he loved it.

A wide smirk was all over Lucario's muzzle as his paws grabbed hold of Snivy's ass, spreading those thick cheeks wide apart and resting the tip of his cock against his passage. Didn't matter how many times he had a chance at it, it was always a treat, wonderfully snug and yet entirely accepting of him. He never said it, knowing Snivy's desires, but he liked the fat-bottomed snake better the way he was, and deep down rather hoped that he would stay slender like this. "Maybe what you need is a harder workout...so I'm gonna give you a nice, hard one."

"Ohh...p-please...give me th-the...the hardest...workout...you can..." Snivy panted, still feeling fully loopy from the booze and the musk, his cock saturating the bedcovers with precum.

"Heh, if you insist..." A slight pull back, then Lucario slammed forward, his cock burrowing into the snake's tight asshole, forcing him wide apart and deep inside, stretching him ludicrously. Snivy tossed his head back at the force of the intrusion, the familiar and yet never tiring sensation of being stretched so wide open returning to him, and so harshly at that, barreling in until the knot smacked his rear and the tip was pushing out from his gut in a nice bulge. For another it might've been painful, perhaps extremely so, but he was blessed with a snake's flexibility, his body didn't have any trouble with stretching around something so big going deep inside.

There was only a moment between when Lucario got all the way in and when he started pounding away, keeping a firm grip on those sizable glutes while his cock rammed into Snivy. He could feel the tip pressing against the snake and pushing out of him, a feeling of pride at his sheer length dictating to Snivy's body what it should do. His thickness was doing its job as well, packing in and spreading those hips out wide, making sure Snivy felt every bit of him and that he got the tightest envelopment of his cock that he possibly could. His pre was already filling Snivy effectively, every time he drew out he brought a good bit of the fluid with him, slickening up that hole and making a mess leak out of that ring.

Snivy's panting and moaning was loud and high-pitched, sounding positively girly in quality; he wasn't usually that loud or high, but the booze was making him even more wanton and less restrained than normal, he couldn't even care about how he sounded. He could feel that huge cock mashing against his prostate, sending bursts of pleasure on top of the wonderful stretch and heat that was all the way inside him. Every thump of that cock against his wall pushed the bulge back out, making him shiver as his muscles were distended in a very familiar way. It was taking all of his strength to keep from being pushed around on the bed, Lucario was giving him only the bare minimum of help, making him work to keep his position and keep taking that heavenly dick to its fullest. A real hard workout indeed, and he was enjoying the hell out of it, even more than he enjoyed a standard one.

Soon Lucario was driving in more insistently, smacking his knot into the snake's tailhole. It was pliable enough that he could have gotten it in with a nice easy stretch with his fingers, but where was the fun in that? Instead he kept drilling against it, trying to force it to break with just his cock alone. No reason to end it quickly; he was enjoying the high moans coming from Snivy, they seemed so much more like the sounds a Pokémon of his size and shape should be making. He'd have to get the snake drunk more often if that's what it took...not that he'd likely get much resistance to the idea. His hips grew impatient, starting to buck in more erratically and smash his knot against that tight ring, making it stretch more and start to open up for him.

Just before he could get it in, though, he felt a tight tension grip him. Snivy cried out as his orgasm hit, sending him clamping down tight around Lucario as he shot his wad on the bed, a sweet-smelling scent wafting up as his gooey seed spilled onto the covers. Lucario growled a bit as the tightness made him feel so good, while at the same time trying to deny his entry...ferociously he slammed in, his incredible strength overcoming the added resistance to pop his knot into the snake's tailhole. Firmly entombed, he too let go, sending thick gushes of musky-scented cum deep into the snake.

If Snivy was feeling the pressure before, it was doubled now with the added force of Lucario's ejaculation. Great gushes of seed launched into him, pushing the bulge in his stomach further out for a moment with every shot, matching his own pulses which continued to stain the covers. There was so much of it, emerging with such force, that it even squirted out of his hole around that gigantic knot, sending splatters onto Lucario and around the area of engagement. But most of it was pushed into him, filling him up nicely with hot seed that pooled satisfyingly within his insides, a nice bit of relief from the intensity of the rutting just before.

Lucario's orgasm outlasted Snivy's by quite a bit, fresh batter being supplied to the snake long after his own cock had run dry. He was huffing and puffing now, the pressure making each breath a little labored; even though he could handle something so massive inside him there were still effects of its presence on him. Still, he wouldn't have given it up for the world, he would be happy to stay there as long as needed.

But Lucario seemed to have less patience. As his cock's emission slowed to a trickle, his muscular paws grabbed and stretched Snivy's rear, and with a long grunt he pulled out, popping his knot right out of its cave, the hole opening wide again and getting another cry out of Snivy. Cum dribbled out of his stretched-out passage, drooling down his taint and along his balls and cock before dripping onto the covers. The last of Lucario's shots painted his cheeks, getting them nice and messy with thick white fluid that would ensure his scent would linger for quite a while. "Hahh...that was a nice little bit of payback, I think. Hope it was as good for you as it was for me."

Snivy nodded breathlessly; his mind wasn't quite as foggy as before, though the effect of the drink was still in him. "Y-yes...it was...th-thank you...m-maybe your...milk will help me grow bigger..."

"Could be, but I think you'll need even more of it to get as big and strong as I am. So why don't you take another dose...I've got plenty to give, and it looks like you really need it. You'll have to work for it, though...no one ever bulks up without a lot of effort, so get to it, unless you wanna be our little femboy for all time."

The idea of that was slightly tempting for Snivy, as good as that fucking felt...but he still wanted to be big and strong like Lucario. The canine's cock was still standing tall and proud...he slid off the bed and slunk up next to it, caressing it with his paws and nuzzling it with his face as he saw the last bits of his previous climax dripping from the tip. It wasn't going to be easy to handle...he'd definitely have to work hard, his throat was going to have to stretch like his ass had to get this done properly. And it would be totally worth it for a good, strong dose of Lucario's seed...whether it really helped or not.