SHIFTING

Story by The Copilot on SoFurry

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This is a story that's been in he head for almost a decade that I just wanted to get out of my head. What happens when the dog is bigger than you and turns out to be more than meets the eye? A needy desperate fuck gives opportunity for a reunion in an unconventional way.

This is 100% a smut piece done in a day. Hopefully there's not jarring issues but if there are let me know. Enjoy!

*story has been updated for potential sequel*


**warning: contains implied bestiality**

Brooks sighed in exhaustion as he threw his duffel bag into his old SUV and hopped in through the passenger side. The door let out a hollow thrum and rattle as he shut in, having to open it and slam it harder to get it to shut all the way. His dad had given him this truck for his first vehicle 8 months ago at the start of his Senior year and they had been slowly fixing it together, but it wouldn’t start this morning so he had taken the bus. That meant his Dad had fixed it after work while he was at practice. The thought made Brooks smile, his Dad always did little things like that. A big calloused hand landed on his head, knocking his baseball cap down into his eyes and he grumbled and pushed the bring back up where it belonged.

“How was practice son? You look exhausted.”

Brooks was soaked through with sweat in his baseball uniform, stinking of dirt, grass, and the funk of exercise. He had been headed back to the locker room when he heard honking and saw his Dad in the parking lot, pointing at his wrist watch. As a result, he’d not taken the time to change and shower in the locker room, instead grabbing his duffel bag and walking right back out. The older man however looked like he’d been able to shower after leaving work as his shirt lacked the dried sweat rings he typically came home with. Summer in Texas was a real bitch.

“Same as always, Dad. You got Smokey running, what was wrong with it?”

“Battery terminal had worked loose and wasn’t making a good connection, I’ll show you later.”

“Okay,” Brooks said, leaning back in his seat. Smokey was Brook’s name for the truck as they had soaked the cylinders in oil before firing it up for the first time in 22 years. When it clattered to life it left out a huge plume of blue smoke from the exhaust. “Is there a reason you picked me up, what’s the hurry?”

“Did you forget? I need to swing by Jack’s place and have a little chat with him about the LLC.” He patted a manila folder on the seat. “It shouldn’t take too long but I wanted to get it over with before next week. If it does, you can always borrow a kayak and go explore the creek like old times.”

Jack was his father’s accountant and he lived an hour out into the countryside. He had a strange relationship with his father, meeting him more often than was probably normal for an accountant. It was likely due to the financial strain Brook’s father had been under since his divorce a decade ago, but at least Jack’s house was interesting. Supposedly it was built in the late 1800s and had been trucked out to its current location some 30 years ago where it was restored to living condition while he was working for the IRS. It definitely smelled old and was always kind of warm.

“I did forget actually. You sure I can’t go back in and shower real quick?”

“I want to get on the road before traffic gets bad. If we’re lucky we’ll be headed home before the sun goes down.”

“Okay, I guess.” His fathers large hand landed on his cap and shook it gently.

“I know you’re tired, son. Why don’t you nap and I’ll wake you up when we get there. Yeah?”

Brooks just shook his head, glaring from the bill his Dad had knocked low on his head. He pulled the sweaty cap off his head and repositioned it lower on his head as he slouched into his seat. The cool AC washed over him, drying out his uniform and causing a momentary shiver. He shifted in his seat and adjusted himself, fixing the pinching sensation in his crotch from his jock and was quickly out like a light. His father smirked at the youth. Baseball had been good to him, helping him trim some of the pudge he’d gained in middle school and now in his senior year his son was tall, fit, and trim. He had put on some muscle but was still lanky. Some had called his son a bean pole, others called him a ‘dorito’, but that was okay, Sawyer had been built like that at Brooks’ age but years of hard work had caused him to bulk up with mass so there was no telling whether his son would wind up the same. He hoped his son would be able to find a career that wouldn’t require him to work as hard as he had.

~~~~~~

A little over an hour later, the old SUV turned off the highway and rumbled down a farm road. The slowing of the vehicle had been enough to wake up Brooks and he sat up and stretched. He had been a little embarrassed to find he had manspread himself in the passenger seat, vibrations having caused a boner that pressed along his hip. He tried to cover it with his arm, but his uniform made it hard to hide. He hoped his Dad hadn't noticed him sporting wood alone with him. Outside was the familiar look of the Texas hill country, brushy mesquite and cedar trees, low lying scrub, yellowed grass, and rocks. They meandered through the properties, crossing bridges over a creek several times as they passed a few large houses. Properties out here were huge, each home they passed had no other buildings within sight. It left the homes feeling isolated and private. Some of them were lucky enough to back their property onto the creek. When Sawyer gently hit the brakes and pulled to a stop, Brooks looked out to see the large old home he had a vague recollection of. It wasn’t the first time he’d been here but the house was now in need of a good coat of paint.

There was a chain link fence between the road and the house but curiously there didn’t seem to be a dog. As they closed the doors to the SUV, Brooks stretched once again. The salt from his sweat had crystalized and was chafing him in a few areas. His Dad patted him on the shoulder as they headed to the gate in the fence and walked through. Still, no dogs. Was the fence instead to keep other animals out? Suddenly the front door to the house opened and an older man walked through. He had to be about the same age as his Dad, maybe a little older. He had gray hair and gray in his beard. Not nearly as muscular as his father, he had a strength in his gaze that said he still wasn’t someone to be messed with. A gigantic german shepherd pushed past him, bounding towards the newcomers. At 6ft tall, Brooks was surprised to see the dog was level with his navel. The dog shouldered him in the hip, rubbing up against him and around him, whining and yipping. The dog jumped up at him and Brooks was surprised to find himself knocked on his ass, face filled with the loose jowls of the sniffing german shepherd. As he began to push himself back up, he was surprised to see the huge hanging sheath of the dog swinging so close to him, two inches of beer can thick rocket sliding out the tip while most of it remained in the swinging sheath. Large plum sized testicles rested in the dirt under the dog, jumping in the sack as his cock twitched. Ace whined, pawing at Brooks as if to ask why he was getting up instead of staying to play.

“Ace, leave the poor boy alone,” Jack called. The big dog stood back up and spun around to bark at Jack, presenting his pucker to Brooks. As Ace looked back at him, his tail flicked to the side.

“Ace, I said get over here.” The german shepherd bounded away but kept circling Brooks, seeming to ignore Jack as he scolded the dog. After a minute he gave up and ignored the shepherd, shouting to Brook’s Dad instead as he helped him off his ass.

“Sawyer! Good to see you!”

“Hey hey Jack, it’s good to be here!” Sawyer replied, smacking the dirt off his son's butt. Brooks blushed at that, waving a hand to ward off his father. The german shepherd was doing laps around Sawyer and Brooks, sniffing at their feet, pressing his nose against them, forcing their hands to pet his head before bounding away. “Sorry for Ace, he hasn’t been able to run off his energy today because it’s too hot out. He just mopped around the house. Seems he’s excited to see Brooks again. It’s been a bit, boy! Good to see you.”

“Again?” Brooks asked, unsure what Jack meant by that and looking at his father. He’d remembered coming here but he didn’t remember Ace. They ignored him.

Sawyer said, “Ha! I cannot blame him, it was a hot one today.”

“I can tell, just look at your son here. Have a rough practice?” Brooks turned a little red as attention turned to him. He nodded at Jack’s question.

“Yes, Sir. It was stupid hot out there today.”

“I can tell, I can almost smell you from here.”

“Sorry, Sir. Dad said–”

“I didn’t give him time to shower after practice, Jack. It’s my fault.”

“No no, it’s not a problem. I shouldn’t have said anything. I heard you turned 18 recently Brooks, is that right?

“Yes, Sir.”

“WIll you be going to college?”

“I… haven’t decided yet, Sir.”

“Well, you know my son went to school, he really enjoyed the experience. I think you should consider it, if you want.”

“I will, Sir. Thank you.”

Why don’t you both come inside, we have work to do. Did you bring your documents, Sawyer?”

“Sure did,” Brooks’ father said, holding up a manila folder.

“Good, good. Come in then.”

When they entered the old home, Brooks found the old office to the left right off the entryway. There was an old heavy desk covered in documents with shelves and file cabinets full of books and other documents all around the room.

“Son, why don’t you go to the sitting room and wait there. I’m sure Ace will keep you company,” Sawyer said, patting Brooks on the back.

“If you want, you can go down to the creek at the back of the property, the water is spring fed, nice and cold. Kayaks should be by the shed still, do you remember the way? ”

“I don’t have a swim suit, Sir,” Brooks replied. The cold water did sound nice.

“Boy, I’m sure you saw on the way that there’s no one around for miles. You don’t need a swimsuit. It's a perk of the property being all the way out here.” Brooks turned red at the thought and both his Dad and Jack laughed at him. “Don’t be a chicken shit boy. If you want to go swimming, go. We’ll holler at you when your father is good to go. This should only take an hour or two.”

“I think I’ll sit for now, thank you,” Brooks replied as he went to the next room. He felt bad sitting on the fancy old couch in his dirty uniform as the office door slid shut. He could hear his father and Jack talking through the door but the sitting room was silent, other than Ace’s panting. There was a bookshelf on the other side filled with books and photos and he was tempted to grab a book. Instead he looked at the photos, vague memories of playing on the property long ago. He remembered playing with Jack’s son who was some years older than him chasing him around the yard as they played tag or went for a swim in the creek. The older boy had been wearing briefs and once wet, they left nothing to the imagination. As a pubescent teen it had been fuel on the fire as he gripped with his homosexuality. He’d been off to school for some time now and Brooks wondered when he’d see him again. They had been friends right? He’d definitely been a crush of his and fantasy most nights alone. That’s why Brooks had joined baseball in the first place, he wanted to be like his crush.

Ace was on the floor across the room, watching Brooks with big brown eyes. He whined, crawling forwards on his belly before stopping. He did it again, causing Brooks to chuckle. This dog was so unusual and big, looking the size of a man as he crawled across the floor. Brooks was thinking about his crush as he reached out a hand to pet the dog, calling to him. Suddenly the large head of the german shepherd was pressing up against his hand as he stepped forward, panting happily as Brooks scratched him behind the ears. Then Ace barked loudly, jumping on the couch to sniff his ear before jumping back down to sniff his feet. The scent of the dog was strong and musky, like musty newspapers mixed with a men’s locker room. It caused Brooks’ head to swim a bit as he ran his hands through the thick fur.

He was still embarrassed from the dog’s attention earlier but the scent seemed to make him feel warm all over, head swimming. He felt hot all over as his dick began to swell in his jock once more. The feeling was uncomfortable but he just felt so god damn horny. The thought of his old crush was strong in his head but then there was that musky scent of the canine that drew him back to his reality. Ace was panting up at him through half lidded eyes. Brooks was certain if he looked, that huge red rocket would be slipping free of its sheath once more. He could almost feel the heat of it near his ankle, knowing all it would take was to move his foot just a bit and he would feel the thing pressing against him. He throbbed in his jock, iron hard erection visible in his thin uniform pants. Brooks shook his head to clear it, what the hell was he thinking? He shifted in hand a bit and the shepherd let out a groan, huffed at him, and licked his lips as he looked up with big soulful eyes. They reminded him of the boy in his memory and he throbbed once more.

“You're such a goofy dog. Fucking big too, I don’t think I’ve ever seen a shepherd as big as you.” The dog looked pleased at the compliment, licking his lip and letting out a huff. It was almost as if he had understood Brooks, that was curious. He looked back at the photos across from them and a vague memory of a german shepherd running with them as they splashed in the creek. It was a good memory. As he breathed deep, pining for the boy he had once known, a hot flush surged through him once more. Suddenly Ace’s nose pressed into his groin and began to sniff aggressively. Brooks bit back a groan as he looked down in shock. The gigantic german shepherd looked up at him with big brown eyes as his black nose pressed to the wet spot in his uniform.

“Woah boy, what the hell are you doing?” Brooks squeaked, trying not to be loud enough for the others to hear him. He tried to push the big dog away but he was too big, too strong. He kept coming back to where he wanted, hot breaths snorting against his cock and balls through his sweat stained uniform and jock. It was enough to make his 18 year old cock twitch and swell, rapidly growing as that hot flush washed over him. He nearly moaned aloud when a big strong flat tongue lanced out and began to lick through his thin uniform pants. Ace was wagging with his whole body as he looked up at Brooks with what looked like a smirk on his muzzle. A paw came up to his thigh as Ace tilted his muzzle, licking in longer strokes over his growing cock.

Brooks sat frozen in shock for several licks, staring in shock as Ace’s attention. With a gasp he stood up suddenly causing Ace to scramble to his feet and away. The dog then sat in front of him, putting a paw up to beg as he wagged. Between the shepherd's legs, about a third of his cock was out of his sheath, about 5 inches of cock poking out and bouncing between his legs as it drooled onto the floor below him. Brooks could almost swear he could smell the metallic scent of the thing from where he stood as he watched those giant orbs rise and fall with each twitch.

“I gotta get out of here,” Brooks mumbled, walking quickly to the front door. “Dad, I’m going to the creek!” He called as he walked by the office. Ace tried to follow him, eagerly pushing against his legs and licking at his hands. Trotting as his cock swung heavily back and forth, slapping at his sides.

“No, stay! Stay!” Brooks hissed, using his leg to push the dog back. Ace whined, pawing at him, his ears back and tail tucked. It hurt Brooks for a reason he couldn’t understand, but he needed to get away before that dog had his way with him. He could hear Ace whining and pawing at the door as he stood on the other side. Looking down, Brooks looked down to his traitorous boner tenting his pants as he panted with wild eyes. A breeze caused him to shudder as the once warm spot of Ace’s licking rapidly cooled. He rested his head against the door to gather his thoughts before walking around the side of the house and beginning to jog down the slope to the creek.

“What the fuck is up with that dog, I can’t believe he did that,” Brooks mumbled to himself. Where did he even learn to do that? He stopped dead in his tracks as he wondered if the dog had been taught to do that. The thought was alarming, but the sight of that huge red rocket throbbing and twitching for him still wouldn’t leave his head. He couldn’t help but press his palm against his bone, groaning as he rose to the tips of his toes. He hadn’t been this hard since he had been railed by a line backer from the football team months ago, he never got this hard by himself. At least not normally. He almost felt dizzy with need from the whole experience, wanting nothing more than to drop to all fours and work a load out. He hurried on his way, rounded the shed close to the creek moments later.

He was so caught in his own thoughts he didn’t hear the thundering noise of approaching paws. Ace had whined at the door for only a few moments before he trotted to the doggy door at the rear of the house. He had stood and watched Brooks from the back steps of the house, the boy jogging towards the creek. His keen eyes picked out his erection before Ace yipped, navigating down the back steps and bounding across the yard. Brooks sat down behind the shack, out of sight of the main hose with his back against the wood slats. He looked around to make sure there were no homes within view and no one was around before he quickly unlaced his baseball pants. He pulled aside his saliva soaked jock and cursed to himself as he fished through his cock. Eight inches of steel hard uncut cock throbbed into the open air as he wrapped his hand around his manhood.

“Oh fuck, I’m so fucking close already. I need to cum so bad,” Brooks hissed, pulling his foreskin back. Normally he wasn’t such a hair trigger but something just made him feel hot and bothered. He pulled up his shirt, fingers reaching for a nipple and playing with it. A pinch and roll and he throbbed a string of pre into his hand. It wouldn’t take more than a handful of strokes and he would spill himself. He was panting and stroking his way rapidly to orgasm, inches from tumbling over the precipice of a messy orgasm when suddenly a hot breath washed over his crotch. His eyes shot open in alarm, hand leaving his cock as he pushed himself up in an effort to get away. It didn’t help as Ace crawled forward the remaining distance on his stomach once more. The hot heavy ribbon of his tongue pressed against the underside of Brooks’ achingly hard cock, and dragged up hard as the boy shuddered in pleasure. He stared in shock as the dog licked once, then twice, the huge tongue flattening out and enveloped most of his rod as he looked up into Brooks eyes. Could a dog smirk? It certainly looked like it as Ace licked long and slow, his nose pressing against the head of Brook’s cock as his tongue worked inside his foreskin. Brooks was panting, the strong scent of Ace making him feel warm and hot again as the shepherd pulled his muzzle back leaving a string of pre between that black nose and Brooks’ glands. The image was enough to make the teen shudder and throb, tipping over into his orgasm.

“Ugh fuuuuuuu–” Brooks breathed out, fingers gripping the soil under him as he gave a single thrust into the open air. Shame filled him as his cum spurted out and against Ace’s tongue. Suddenly the dog’s muzzle surged forward to envelope his entire rod within and Brooks' hands shot to the back of the big canine head, pulling him down against the base of his cock. That warm muzzle pressed against his balls, huffing as that flat muscular ribbon of a tongue rippled around him, wriggling around in the canine mouth. He could feel the dangerous fangs and teeth pressing against his most intimate areas as he whimpered and shuddered. Cum lanced out into Ace’s muzzle, rope after rope splashing against the back of his throat and mixing with the thick drool that ran down his tongue into Brooks once more wet jock and pants. 3 shots, 6 shots, then 9, then 12. Brooks had never cum so hard in all his life and yet here he was, hunched over and humping a load up and into a persistent muzzle of a fucking gigantic dog.

“Oh fuck, oh fuck, oh fuck!” Brooks gasped, gripping the fur of Ace. The dog whined in pleasure, swallowing around the boy within his mouth and pressing his nose deeper into his musky sweaty pubes. He could feel the boy's foreskin slipping loosely around in his muzzle and pulled back to allow his strong tongue to toy with it, reveling in the musky bleachy taste of the boy's load in his muzzle. Brooks was tugging at his ears, trying to pull him off his lap as squirmed, growing more and more sensitive with each stroke of that rough tongue against his cock. Ace pulled back, panting as he did and allowing his spunk covered tongue to hang where Brooks could see it.

“God damn, you such a fucking weird dog. I can’t believe you just–”, Brook had started, but the dog Ace pushed closer to him and Brooks suddenly found his mouth filled with the large tongue of the mutt that had just made him finish in his muzzle. The big tongue forced its way into his mouth, licking at his tongue and teeth. Brooks was shocked and disgusted, attempting to pull back and instead bumping his head against the shed. Then he tried pushing the dog away and found he didn’t have the strength of leverage to do so. His panicked eyes met the canines and he could almost hear the dogs thoughts.

That’s right, you can’t get away. You just came in my muzzle and now I’m using your mouth for my own pleasure. Taste yourself on my tongue, and taste me. Know me, taste me, smell me. Drink me in and submit.

That hot flush was once again coursing through his veins as Brooks shifted from pushing the dog back in disgust, to sitting without resistance, to closing his eyes and moaning into the odd kiss with his needy beast. Now his fingers were pulling the shepherd into the kiss with need. Why was he so hot and flushed, like he was in heat? He felt needy, his cock throbbing steel hard once more. The canine pulled back, huffing down at him. Brooks looked up at him, eyes trailing to where that huge rod was once more poking out into the air. It was enough to shatter the spell Brook was under as he tucked his hard cock back into his jock and tried to hurry to his feet. He didn’t get too far before the giant shepherd shoulder checked him, knocking him to his knees. Brooks tried to get up three times before a paw landed on his back. It made him pause just long enough for the dog to get his teeth into the waistband of his pants and began to pull them back with a growl. Brook reached back and tried to keep his pants from slipping down but he had already loosened the laces. It didn’t take much before Ace had the pants where he wanted, lifting his cold nose to sniff at Brook’s rear.

The human gasped as the cold sensation was replaced with the fiery wet sensation of Ace’s tongue dragging over his rear. The dog was practically dancing on his paws as he huffed into his rear, licking urgently. That tongue was parting his flesh and forcing its way inside, spreading slick hot saliva. Brooks couldn’t do much more than bite down on a finger, moaning as the dextrous tongue surged forward. He was so hot and horny, needing something, anything to scratch that deep itch inside him. He imagined this was what being in heat felt like, so desperate to have a male scratch that itch. He moaned for the canine, looking back over his shoulder to see the knowing look reflected in the big dog's eyes.

That’s right, you’re letting a dog do this to you. You’re such a slut Brooks, allowing me to sully you like this out in the open. It's been forever since I’ve had someone receptive to me in this form, Brooks heard within those eyes.

This form? What does that mean? Brooks thought to himself. His thoughts were interrupted as the heavy shepherd leapt onto his back, coarse paw pads wrapping around Brook’s hips. He felt hot slick heat against the back of his legs before it surged up between his legs. As he braced himself and looked down between his thighs, he shivered at the size of the cock that slid out of view. Brooks hung his head, torn between whether to try running or to let the hulking canine have his way with him. The choice was made for him as a heavy weight settled onto his back, forepaws gripping his waist as a tongue licked along his spine. That tapered tip of the throbbing dripping rod trailed up his perineum and poked him against his ass. The sensation of a shot of hot pre searing into his passage made him gasp and shudder as Ace panted urgently behind him.

That firm rod pushed relentlessly into him, pressing forth with great power as those forepaws pulled him back into the deep thrust. Brooks found his breath leaving him as that veiny member explored his depths deeper and deeper. The canine’s cock felt hotter and longer than anyone he’d ever been with as it stroked easily past his prostate and into his deeper reaches. Ace then pulled back and thrust back in with a growl, quickly pulling out and pushing back in again. The pace and force was rapid, lubed by only the voluminous output of precum. Brooks found himself moaning under the beast. Each thrust and throb seemed to cause the dog to grow larger within him. Soon he was rapidly becoming alarmed at just how full he felt, the dog only growing larger.

“Fuck, fuck, ugh, fuck,” he cursed in a breathy whipser. Ace started pulling him into his thrusts harder, giant canine testicles slapping against Brooks much more moderately sized set as precum dripped from his rear and down his sullied jock and uniform pants. Those thrusts had gotten so violent, Brooks found his forearms giving out, leaving him a moaning mess with his rear parked high in the air for Ace to have his way with him. Paws now pushed against his shoulder blades, pushing his face down into the first as he drooled in pleasure. He would be ashamed if Ace wasn’t fucking him so good. Instead, he felt like he would shoot a load into his jock any minute. The panting breaths of the dog behind him seemed to be shifting as the cock inside him continued to grow larger in length and girth. The knot had slipped out and was crashing against his poor abused pucker. Brooks was certain if he looked between his legs he would see a bulge in his belly moving along with every thrust. Suddenly a large furred hand landed on either side of his head. Not a paw, but a clawed and furred hand. Another found his hip, pulling him back into a particularly violent thrust that threatened to spread him on the large mound of flesh at the base of Ace’s dick as Brooks cried out.

“Fuck me, you’re tighter than the last piece of tail I had. Then again, you always were a scrawny thing, Brooks,” rumbled a deep voice. “I think that’s why I had a crush on you all those years.”

Brooks slowly turned his head to look over his shoulder, his mouth falling open at the sight. The giant shepherd that had sucked him off less than 30 minutes ago and had been blasting his rear to bits was now a sizable furred canine man looming over him. He was heavily muscled, pecs and arms corded with effort as he worked himself in and out of Brooks. His lips were pulled back in a half snark as he grit his teeth, arching his hips and clapping them into Brooks upturned rear with mounting strength as he grew larger and larger before the boy’s eye. Were he to stand, he had to be 8 feet tall and he looked like he could lift a car if he tried. The strange hunk of a man smirked down at him, shifting a paw back to his shoulder to pin him in place once more as he looked up in a mixture of panic and awe.

“I can see… you’re thinking… about running,” the shepherd man huffed down on him. “Stay right where you are. Be a good boy for me and I’ll make you feel like you’ve never felt before.” The words made Brooks whine in the back of his throat as that fat cock crammed itself deeper into his body. The large man leaned down and sniffed his neck, nibbing the exposed skin there and licking up along his jawline. Brooks was having a hard time trying to reconcile the dog man behind him with the four legged beast he had been dealing with up to now. He didn’t feel in danger, he felt on fire! The dog man was now growling as he thrust, forcing his fat bulb against Brooks with slower, more deliberate thrusts. Brooks took a deep breath and relaxed, pushing back into the next thrust until a lightning strike of pain flashed through him as the largest thing he’d ever felt slipped in. Ace barked above him, suddenly wrapping bodily around him as his hips stuttered into a staccato of rapid thrusts. The size of him grew larger and larger, alarming Brooks as he breathless felt that battering ram pull against his hole and the force itself against his prostate. Strings of thick precum were forced from him as Ace worked that knot around in his rear, panting raggedly into his ear.

Brooks suddenly seized, rope after rope lancing from his half hard cock as that knot forced him to orgasm. Ace looked at the boy, listening to him as a keening noise left his mouth. Brook was clearly caught between pain and pleasure but the smell of seed wafting up to his nose propelled Ace along. He didn’t want to stop fucking the boy, he looked cute in the uniform and was tasty and delicious in his post practice funk. He leaned down and buried his nose in the boy's armpit, tongue licking at the fabric there. Brooks could feel that hot tongue licking him under his arm as the man above him shuddered, grinding deep against his ass. He pushed back and clenched deliberately, causing himself to gasp and shudder as that fat bulb of flesh pushed against his prostate with vengeance and made him seize up again, once more spilling himself on his jock. With a bark, that giant cock throbbed hard inside him. Teeth bit into his shoulder as Ace pulled his knot free and slammed it back in again. Brooks practically screamed and Ace stuck his furred fingers into the boy's mouth. He knotted Brooks over and over again, growling down into his shoulder before he finally barked loudly. Both Ace and Brooks moaned as magma hot cum lancing out into the boys rear end. The wave of sensations was so intense, Brooks found himself gasping out incoherent moans as his yet another load spilled into his jock and uniform pants.

The sensation of his ass spasming around the throbbing knot was so intense that Brooks saw stars. His rear end clamped rhymically around the canine man causing Ace to squirm and shudder, paws going to his hips to push Brooks flush with his hips as he collapsed down on top of him. Ace throbbed deep inside, jet after jet of hot canine cum filling Brooks and leaving him warm and full. The heavy weight against him held him in place, preventing him from attempting to move as the dog man panting into his ear. Ace eventually guided Brooks to lay flat into the grass, squishing him flat against the dirt as he did. Both men paned, desperate to find their breath in the oppressive summer heat.

“Damn Brooks, that was… amazing.”

“What? How do you know my name?”

“I’ve wanted to do that with you for so long but it wouldn’t have been right until you were eighteen. And then seeing you here, in that uniform brought back so many fantasies. I just couldn’t stop myself.”

“I don’t understand–”

“Sometimes the canine urge gets so strong, especially when shifted. I just couldn’t stop myself, not when I could smell that you wanted it too.”

“What do you mean by I wanted it to? You were a fucking dog!”

“It was hard to manage in college but I graduated last year and I’m back now. And then here you were, smelling so good and looking so amazing in that uniform I just couldn’t–”

“Who the fuck are you?” Brooks practically shouted, causing the dog guy who had buried himself so deep he could practically state it to finally stop talking. He shifted behind Brooks, pulling some of his weight off of him. A hand pulled them both back up before lifting one of Brook’s legs up and helping him spin around to be face to face, the boys back to the dirt. The feeling of the knot twisting in him caused Brook to grab the dog man’s chest, fingers pulling fur as he strained out a choked cry and came on his belly. The canine smirked at that, thumb retrieving the spunk to lick it with a moan as Brooks watched.

“FUCK!” Brooks gasped, face tight in a grimace as the big bulb in his ass tugged on him. Ace also whined, another hard throb shooting yet another glob of cum into the boy in his lap.

“That was so hot,” the canine mansaid, his hand tracing Brook’s cheek. The hands that were pulling his fur began pushing him away, as a thunderclap of anger spread across Brook’s face. It was enough to make those canine ears flatten and causing his tail to tuck, even while it twitched with his next jet of cum shooting into Brooks.

“Who… the fuck… ARE YOU?” Brooks demanded once again. The man whined, not understanding.

“What do you mean? Brooks, it’s me!” His paw pressing to his chest. “I’m Ace! I’ve always been Ace.”

“What the fuck are you talking about?” Brook said, trying to squirm away and wincing when he found he was stuck. “What did you do to my ass?”

“We’re knotted,” Ace said, tail wagging as he beamed with pride. “It’s a canine thing, carries over to my half shift if I do it right only it’s bigger in this form. All of me is bigger, it's kinda hot. I just couldn’t contain myself.” As his tail wagged, Brooks could feel it tugging the shaft around inside him causing little dribbles of cum to leak from his soft cock.

“How are you doing this? Why did you do this?” Brook asked, his hand petting the furred chest in front of him. Ace rumbled deep in pleasure, nose pressing against his face.

“Being a dog, things are more black and white. I wanted you to see how much bigger I am now and was so excited. When I smelled your… your erection, I thought you remembered who I was and I believed you thought I looked sexy in my canine form. That you wanted it too and were just playing hard to get.”

“Hard to get?” Brooks seethed up at him. He bit out the next words. “You. Were. A fucking. Dog.”

“You mean you didn’t… you didn’t remember me? That I could shift?” Ace whined. “You don’t remember us playing together, as kids? You used to love it when I shifted for you. I figured I would surprise you now that I'm back from College.”

“Are…are you a werewolf?” Brooks asked timidly “Will I… become one now too?”

“No, I’m not a werewolf silly. I already told you, I am a shifter. You really don’t remember, do you? Don’t you remember all those days playing in the creek?” Ace laughed low ending in a huff. “I caught you checking me out so many times,” the dog man slowly began to change into that of a human. He was similarly muscled as he was as a dog man, just not nearly as large. Shaggy brown hair and matching warm eyes looked down on him. The once giant knotted cock also slowly shrank inside him until finally Ace pulled free with a pop. “Don’t you recognize me?”

A hazy memory came back to Brooks, a snapshot of a decade ago as he played with an older boy in the lower yard by the creek. As he chased him around a tree, suddenly the boy was gone and a young german shepherd was there, barking in a play bow. Ace had always called it his little magic trick but that had been so long ago. More memories came from when they grew older, chasing each other through the creek in just their underwear. A teenage Brooks had blushed furiously as Ace sat on his legs, pinning him down in his wet briefs. The boy was almost a man now. He had smirked down at him as he crossed his arms. By then Ace was in highschool, muscles filling out his frame and having grown noticeably in other areas. The weight of it against his thighs had been heavy on him, leaving him with fantasies for years to come. How had he forgotten his secret trick?

Yet here he was, smiling down on him as his features melted into something more familiar. There was no denying how handsome Ace was with his 5 o'clock shadow and chiseled jaw. He had a broad muscular chest and sculpted abs, shoulders rounded with muscle. His legs were thick and that pendulous sack hung low and fat despite what they had just done. He leaned back and away from Brooks, rising to his knees with Brookes between his legs as the younger boy pushed himself up on his elbows. He could feel hot slick cum leaking from his stretched asshole as watched with a red face as cum dripped slowly from Ace’s shrinking uncut cock. Ace had olive collared skin and was dusted in all the right places with brown hair. When the older boy reached behind his head to scratch his scalp nervously, Brooks marveled as the muscle bunched with the action. Ace took notice and smirked down at him, flexing as corded muscle bunched.

“See something you like?” He asked. Brooks blushed, unable to reply and Ace relaxed. “You seriously didn’t know it was me when I came running out? Or when I was licking you on the couch? I thought you knew. I thought you might find it hot. I know I did.”

“How would I have known? I haven’t seen you in 5 years man, what the fuck. I was a teenager, I didn’t know you were really… magic. I thought the dog was the trick, or a dream. Why… Why did you stay a dog these last couple of years?”

“I had a crush on you dude! I couldn’t process it as a person. You were young and I was old enough to know it was a problem. As a dog I could love you without it being a problem. I knew you wouldn’t hate me for wanting to be near you, pressing against you, laying on you. Touching you.”

Brooks punched Ace on his shoulder, socking him hard.. “Dude! I thought I was being fucked by a dog! I… I thought–”

“Thought you were into bestiality?” Ace chuckled. “You really were making some interesting noises.”

“I was having a crisis!”

Ace smirked down at him, fangs glinting. “Yeah, probably at how awesome that big dog dick felt. I couldn’t have been too big of a crisis because you absolutely filled my mouth, dude. I don’t even think I’ve cum that hard into my own muzzle in a half shift! It was beyond hot,” Ace said, licking his lips in a lecherous fashion. Brooks turned crimson and buried his face in his hands as Ace laughed at him. The larger boy held out a hand, “Come on, let me help you up.”

Brooks accepted and was pulled to his feet and into a hug. It was awkward at first given Ace’s nudity, Brooks pants still around his ankles. He eventually relaxed, melting into the embrace even as their genitals pressed against each other. Ace was so much bigger than he remembered seeing him last. He had to be about 6’6 now, a head taller than Brooks. He was also a nicely muscled hunk whereas Brooks was stuck as a wiry otter. Only traces of the young man Brooks remembered came through in his features, but the sensation and familiarity of the hug were just as familiar as the scent of Ace’s skin. It brought tears to Brook’s eyes as he nuzzled into Ace’s chest. His long time crush was holding him, sucked him off, had fucked him even. Was this real, or was it just another dream? The hug was like all those times Ace had held him as he read aloud about the orphan wizard boy and his school adventures. Brooks had laid on Ace’s chest in the old house up the hill as his father did work around the property for Jack. It reminded him of the way Ace held him when Brooks told him that his mother had left and was never coming back. Here in Ace’s arms, he felt at home.

“I missed this,” Ace said, swaying gently side to side.

“I can’t believe it’s you. I’ve missed you so much,” Brooks replied, close to crying.

“My little Brooks-y-boy is all grown up. And he’s a sexy baseball player too,” Ace mumbled down into his ear, nibbling as he did. Brooks hiccupped and laughed, rubbing his forehead against Ace’s chest once again before he looked up. Ace used a thumb to wipe away the tear rolling down his cheek.

“I can’t believe my Ace turned out–” Brooks blushed, hiding his face in Ace’s hairy chest. “Nevermind, forget it.”

“Turned out to be what?” Ace laughed. “A college graduate? Excellent in bed? A shifter? Sex on four paws? A–”

“A hunk,” Brooks practically shouted. Could he feel more embarrassed than before? “I can’t believe you turned out to be such a hunk. I also can’t believe we just had sex, let alone you were a dog at first. My brain can hardly process it.”

“Oh, well maybe we should do it again just to be sure?” Ace laughed into Brook’s ear.

“I don’t know, my ass kinda hurts after what you did, your knot or whatever was fucking huge,” Brooks said, stepping back and away from Ace. He had a hard time looking Ace in the face, his eyes wanted to drink him in. Ace smirked at him before he turned to face the shed. He looked back over his shoulder and pulled his cheeks apart to show Brooks his tight pucker.

“Maybe you can return the favor?” Ace said. Brooks was so stunned he didn’t move at first, simply staring at the stud spread before him. Suddenly fur began to sprout along Ace’s muscular figure as he grunted, growing taller and more muscular. What had been a sizable cock and testicles before swelled with growth as he spread his legs further apart. Eyebrows shot up on Brooks’ face as he watched the giant rod dangle between Ace’s spread legs.

That was inside me? Holy hell!

The tail that grew from his spine wagged high on his back as it grew to the full length giving Brooks a view worthy of salivating. No matter what form, Ace just seemed to be a visual buffet. “Or maybe you prefer this form? I can go further if you’re feeling REALLY kinky, I’ve always wanted to try–”

“No!” Brooks blurted. “No, this is fine. I like this.”

“Oh, didn't I like my feral form?” Ace said, wagging his tail and causing his pendulous nuts to swa as well.

“No, I did,” Brooks said, turning red from embarrassment as he approached. He placed his hands on Ace’s hips and bit his lip. “I just don’t think my psyche could handle fucking you with four paws. Not right right now.”

“Right now, huh? So you’re saying there's a chance?” Ace teased back, teasing his tail along Brooks’ front. “You’d fuck my tight little doggy as as I whined and beg for more?”

“Shut up!” Brooks said, wrapping arms around Ace as the canine man flagged his tail to the side. Brooks reached down into his jock and scooped as much of his spent load out as he could, spreading it on his cock as lube. He grabbed a handful of fur on Ace’s shoulder and pulled him lower so that he could line himself up. He pushed in without hesitation,sinking to the hilt in a smooth motion. Ace didn’t yelp or grimace, he pushed back with a deep and happy groan, panting over his shoulder as Brooks.

“OOoooooh, you kinky boy. Using jizz for lube? Fuck, that’s so hot. Good boy, Brooks. Good boy!” he moaned, pushing back as he began to thrust against his hips.

Maybe I can get used to shifting, Brooks thought as he bit down on Ace’s scruff. His mouth was filled with fur but the canine man groaned and his hips snapped back against Brooks as Ace thrust himself onto his cock. Oh yeah, definitely could get used to this.