Work Text:
Every full moon, Stiles remained the only person who retained his senses. Arguably Derek and Peter had some control over their impulses thanks to their years of experience in the matter, but really, they were just as bad as the rest of the pack. Each month Stiles was basically forced to be the one done friend at a rave. Only the drunken idiots he was coralling had super strength, hyper sensitive senses, and were in a constant state of Horngry. The scrawny teen spent half his night chasing after one of them, and the other half running for his damn life! And when caught he had to endure getting fucked like the only bitch in a breeding ranch.
On top of all that, in the morning, he was in charge of tracking everyone down and giving them a change of clothes, given that they tear any clothes to shreds when they shift. It was frustrating to say the least.
Not tonight! Stiles had finally come up with a plan on how to control the pack without resorting to chains or mountain ash (which the others had been offended at the mere suggestion of using). No! This plan relied solely on Stiles' magic, a simple ward, and the horn dogs' own impulses!
Once the moon had fully risen, each of the men had walked away fully naked, the werewolves had all shifted and scattered across the Preserve, Stiles remained on the Hale house porch and stripped naked as well.
Shifting through his bag, Stiles took out his spell tome, a small sheet of fire paper, a jar of ink, and the biggest bottle of lube he could find. Opening his tome, he traced out the needed glyphs on the paper using the silvery ink. The first glyph was to call. Simple, it would help broadcast his location to the others so they'd know where to find him in the same way one might know how to walk home by remembering the path. The next glyph was to reduce. To shrink. Any who passed through that ward would shrink down significantly. Finally, the last glyph was to bar passage. This last one Stiles had to be extra careful with, as he needed to make it work in one direction.
With everything transcribed onto the paper, the young druid carefully folded up the paper into a cone. He then squatted down, reached behind his balls, and wedged the corner of the paper into his asshole. The waxy paper protruded like a bouquet coming out his ass. Taking a deep breath, Stiles braced himself for the next step: igniting the ward. Pinching a fold between his fingers, Stiles cast a mundane Spark spell to light the burn the paper. Instantly, the entire page burst alight with radiant blue light. The links of magic flame danced up along Stiles' spread taint, and a burst of flame flew up through his anus. Thankfully, the spell had taken shape, so the short lived flames didn't actually leave burns behind. Inside his belly, Stiles could feel a low hum of potent magic residing!
After performing what he deemed an appropriate amount of fist pumping at his display of magical prowess, Stiles put away his tome and ink, leaving only himself and the bottle of lube on the porch. Taking a deep breath, Stiles poped open the cap and poured out handful after handful of slick gel onto his fingers. Over and over, the twink shoved his fingers into himself, depositing copious amounts of lubrication throughout his ass. By the time he had emptied the bottle, Stiles' gut was slightly swollen from the added contents.
"Alright, now time to play the part of bait." Stiles groaned to himself as he began to hike out into the forest.
...
It didn't take long for the first wolf to spring his trap... or more accurately to spring onto Stiles. Jackson, bless his dumb heart, had come bounding on all fours, cock fully erect and trailing precum, as he tackled Stiles to the ground. Clawed hands pinned Stiles' arms over his head as the animalistic jock shifted himself to align with the wet pucker. Without grace or hesitation, Jackson mounted the tight ass and began to pump his thick cock in and put with a desperate speed. Normally, Stiles would have been fighting back, probably used a spell or his bat to get his childhood bully off of him. But tonight, this was exactly what he had planned for. All he had to do was wait and- there! With a triumphant howl, Jackson slammed his cock fully inside Stiles tight ass, bursts of thick warmth seeped inwards through Stiles as the werewolf finished inside him. As Jackson panted heavily against his back, a layer of sweat having been wiped off Jackson's front onto Stiles' back, the twink counted the three seconds needed for the spell to take hold. With a faint POP, Jackson seemed to vanish from sight! Stiles let out a sigh of relief as he felt something moving around his gut.
Triggered by the fresh intake of cum, the wards had triggered perfectly. Jackson was now two inches tall, trapped in a sloshing ocean of lube and his own jizz. And his only exit was warded to repel him from escaping. He could enter the giant ass, but he couldn't leave it!
Stiles caught his breath as he stretched his limbs, brushing dirt off his front as he took in his surroundings. "One down. At least i know that the spells work. Now let's see who else wants a bite."
...
...
The next few hours were a relentless marathon of cocks, claws, and cum. Stiles was no stranger to getting raw dogged by the pack, but normally he was lucky enough to fend off most of them throughout the full moon. But tonight he was in for the entire cast party. Most of them were fairly quick. Isaac, Scott and Ian lasted about as long as Jackson. He figured that being betas the four were more prone to going multiple rounds a night rather than lasting throughout one long fucking. As he constantly felt the four wrestling and fucking inside his well-bred ass.
The twins were... well, Stiles had taken both their cocks at once before in the showers. But apparently when they merged into their alpha form their cock was greater than the sum of its parts! Stiles had thought they were big to start with, but by the end he remembered what made them especially dangerous: the knot! Stiles was thankful that he only had to endure that mass stretching his ass for a few minutes.
Peter... well Stiles wasn't shocked to find Peter fully himself. The creepy old man stalked up to Stiles shortly after the twins had been sucked up his ass. Before Stiles could even move from the previous breeding, Peter was tracing a claw along his red swollen entrance. He playfully dipped his fingers inside the goopy mess of cum.
Stiles felt hot breath enter him as Peter pressed his face between Stiles cheeks, a burning hot tongue snaking its way inside his war torn interior. Stiles could feel the shrunken pack members clambering away from the invading tongue, a ravenous fanged maw greedily lapping up the contents of their prison as Peter scooped the contents of the pack's balls doen his throat. Stiles felt the tongue wrap around one of the tiny figures, and on instinct he shouted for Peter to stop before he ate someone! But as soon as the tongue slipped out his hole, a glowing wall popped up to prevent the tiny from exiting.
"Clever boy." Peter growled. "Lure them in with your ass, shrink them down, and trap them inside. Very impressive, Stilinski." The man hummed through cum drenched lips as he prowler higher along Stiles' body, locking his fanged mouth with Stiles'. "I want to join the fun!" That was all Peter said before Stiles felt the familiar girth enter him. "FUCK YEAH, SQUIRM UNDER MY COCK YOU PUNY BETAS!" Peter growled as he slammed his girth deeper and deeper into the pack's bitch.
As Peter's own knot popped inside, followed by the familiar deluge of cum being dumped inside, the old man panted with a knowing grin. "How about you give us a good finale, Stiles? The Alpha is waiting." Then he too vanished with a POP.
Stiles knew from the red glint on the tree line that Derek was had found him. At first Stiles stared back at those red lights, tense as he expected his boyfriend and mate to pounce. But the other man didn't make a move. After a minute, Stiles stood up slowly, wobbling on shake legs, and brushed himself clean. Derek, much like Peter, was a life long werewolf, and the current Alpha. He was fully composed, and his eyes watched Stiles with a territorial protection. "Hey, Sourwolf. Having a fun night?" Stiles' eyes moved down along Derek's hairy muscles, finally noticing the other red part of Derek's body.
In this state, Derek didn't need to wait until climax for his cock to fully shift and form its knot. Stiles wasn't used to seeing the club sized canine cock out in the open. He was used to feeling it grow inside him as he was fucked. But thanks to the full moon, Derek was at his full glory. Stiles would be lying if he said he didn't drool from both ends (saliva and lube respectively) at seeing his lover’s beastly cock.
Derek grinned across the clearing as Stiles gawked.
"Alright, yeah, that’s gonna, big bad wolf is accurate. Ya know, my what a big dick you have, right?" Stiles was babbling. This was normal when he was around Derek. But seeing him shifted like this, them alone in the woods at night, a bright red cock swaying between Derek's animalistic legs, and not to mention the crowd of shrunken men banging against every cum drenched nook of his intestines... well Stiles was rather overwhelmed.
"ALL THE BETTER TO BREED YOU WITH, MY DEAR." That was it. That, that did it. That shut up Stiles. And all he could do next was get on all fours as present his eager ass up to his monstrous lover. Derek growled hungrily as he bound up to his bitch!
...
Peter was surrounded by idiotic children. Well, more accurately, he was surrounded by gallons of semen, lube, and what could only be described as a living slip and slide of sex. While the other betas were busy kicking at the walls, slipping in their own cum, and taking turns fucking each other stupid, Peter was examining the glowing glyph lining the exit. He wasn't very well versed in the specifics of glyph wards, but he had a basic understanding of how they could be tampered with. Biting his own palm, Peter drew along the glass like surface preventing their escape, a simple glyph to break. And what better ink than the blood of an ex alpha werewolf at the peak of a full moon?
When the glyph shattered, no one else noticed. And faced with the exit stretched wide open for him, outside he could see his nephew beginning to sprint dead center towards them... well he simply turned back and got a seat further down the tunnel. He couldn't wait to enjoy the show!
...
Derek skewered Stiles as he slammed into his spread ass. Inside him, he could feel his entire anus stretching around the monolithic member. Stiles' belly bulged out as the tip probed its way through his guts! Fangs nicked at his ears as Derek teethed against his mate. A wall of living carpet raked along his back as Derek's furry chest slid up and down him with each heavy thrust! The normally coarse body hair made soft and plush thanks to the thicker coat the werewolf's shifted form granted him.
Stiles pushed back with all his strength, eager to take in his boyfriend, experience Derek at his fullest! The brutal fucking made easier thanks to the numerous cocks before. He was stretched wide and brimming with the best lubrication he had. If ever he could take that knot, tonight was the night!
Over and over again, Stiles felt Derek brushing up against his pucker. Closer and closer, deeper and deeper, Derek's shaft buried its way through Stiles' interior. Stiles didn't know if Derek could feel the pack as well, but about half a dozen men were pinned between Derek's shaft and the wall. Forced to endure the brutal fucking first hand!
Finally, Stiles felt the knot pushing against his ass. "READY TO YELP, BITCH?"
"Fuck yes!" The two pulled apart slightly. Stiles braced his hips and readied himself to push back, at the same time Derek spat down over the base of his cock, growling ferally as he pulled back for one final thrust! The two men collided, and the only thing louder than the resounding POP of Derek's knot inserting in place was the high-pitched yelp of pleasure ridden pain escaping Stiles lips!
Both men came in a haze of lust and euphoria. Derek was locked in place bent over Stiles protectively, his fanged lips gently kissing Stiles neck as the delicate boy caught his breath.
It took Stiles a while to notice the issue. Derek was still there. He was still locked in place by his knot. He hadn't shrunk! "Uh oh." Something had disrupted his spell, and know instead of his ward, Derek's gigantic knotted cock was trapping the others inside his guts! "Hey Sourwolf, we need to get back to the house. I need my tome. Derek? Oh shit." Stiles tried talking to the man, but realized that Derek was holding him down. Stiles was locked at the waist to the stubborn wolf, and his attempt to move them both were futile. Scrawny human strength versus superhuman werewolf strength and all. And maintaining the wards all night had drained most of his energy, so he couldn't matter up a spell to help him escape. He, like the rest of the pack, had been caught in a trap of his own design.
He sighed as he curled into Derek's burly arms. At least he could sleep knowing that the rest of the pack was safe, if a little cramped and would soon be waking up pissed. But those were problems for the morning. Tonight, his only problem was figuring out how to get Derek to roll onto his side to sleep.