FSE

Furry search engine

formerly SoFurry search engine

(M human & horse TF Centaur)

Lucien lives in the middle of nowhere- a cabin hidden in the roots of mountains. This would never have been his first choice of dwelling but he inherited the place from his uncle and decided to keep it after all. The view was undeniable- two giant mountains towering over the area, a forest just south of the cabin and a valley between mountains to the north. But most importantly- lots of wild horse gallop through the valley in the brisk mountain air.

Lucien even managed to charm one of the horses into being his mount, since the herd lives basically in his backyard anyway. He named the stallion Cocoa because his entire body is a very dark brown, and just like Lucien enjoys his chocolate- he is also hot. Lucien is bisexual, though leans toward males- and some of these studs are exactly his type; enormously muscular and well-hung. Cocoa's shimmering dark chocolate hide does nothing to conceal the contours of his solid muscles or even the fat veins multiplying toward his groin to feed his impressive member.

Lucien originally coerced the stallion to him with crisp apples to polish his big blocky teeth on; popping the morsels into his mouth through those soft, dexterous lips. Because it is so chilly here perpetually- the whisker-like feeler hairs on Cocoa's chin are often white, making them stand out against his dark pelt, because his breath turns to frost across them. Lucien got Cocoa used to his touch by patting him while he fed the stud- then eventually brushing his long flowing mane and tail. The other horses in his herd have wildly lashing manes from being windswept and water-tumbled from crossing rivers. Cocoa was the only one with perfectly straight and unusually soft hair from being brushed often.

Though it was exceptionally dangerous, Lucien eventually won Cocoa over entirely when he noticed Cocoa's dong wobbling out in the open. He was taken by a mare in heat, but the mare was already taken by another horse, leaving Cocoa to watch, high and dry. Well... the weather around there isn't exactly pleasant for having your junk out in the open- Lucien could not let the poor guy's dick get cold, now could he?

Cocoa nickered softly when Lucien's hot hands cupped his enormous ostrich egg sized nuts to warm them back up. It did not take more than a few gentle touches to coax the three foot, three inch member out to full mast. Like the rest of him- it is a near-black shade of brown from sheath to glans. The most sensitive parts of the horse phallus are the medial ring and the glans- if the horse is trusting enough to let you touch its nuts without trampling you to death- a soft massage of its dense, smooth scrotum is enjoyable too.

Though never equipping Cocoa with any actual reins or saddles- from that day onward the stallion let Lucien ride him around. They live in the same area, so Lucien has no need to pen him up at night, he just gets off and Cocoa trots off to his herd- never straying too far from Lucien's house in the first place.

Lucien was still missing out on the full experience though. He could get Cocoa off with his hands or mouth, but could not actually give the stud a proper blowjob, or let the stallion mount him because he would be absolutely destroyed by a dick that big. And a wild horse isn't going to hold back- he is going to ram that dick in with enough force to impale Lucien. He wished he could be a horse among them too, and eventually found an old magic grimoire on transformation that would allow him to turn horse... but then could not commit to it. The problem is that if he turns himself into a horse... he can't turn back. Because he cannot recite the incantations if he has a horse mouth. Incantations are a hard form of spellcraft to pull off, because it is extremely picky about exactly how you sound- depending on your voice; some people cannot even do it, because they cannot match the correct pitch. Incantation uses vibrations in the air- sound- to shape the ambient mana in the area, rather than a drawn rune to channel through. It was originally taught to humans by the Siren- who innately have voices that whether intentionally or not, cause whoever hears them to obey without question. As much as Lucien wanted to be a horse... he did not want to lose his hands.

Lucien read through the massive grimoire for weeks trying to figure out a way that he could possibly swap in part of another spell to preserve some of his human form, but doing that with incantation was damn near impossible... and also there was no human transformation spell in the book and none of the other creatures have hands. But then he found an incantation of a different type entirely- fusion. Rather than turn one creature into another- it merges two beings into one. Lucien found a Centaur incantation! If he turned into a centaur he would retain his hands and voice- the only thing he actually loses is his legs and average sized human genitals- swapping in the entire body of a horse in their place. The only down side is he needs to sacrifice a horse to the cause. It isn't like he is removing its head and killing it but, it also won't really be itself anymore, either.

For this however; Cocoa was still the best option. He and Lucien understood one another for the most part, they get along already, shared some pleasurable experiences. And most importantly- Cocoa was about twenty years old... horses only live 25-30 years. Cocoa was on the verge of growing old as his time starts to run out... humans live 100 years however. Now put them together? 130 year life span. Lucien might be overriding Cocoa's will, but he is also technically extending his life- several times over.

Now Lucien rounded Cocoa up, this time letting him into his cabin- lured by apples into the warm human dwelling for the first time. Soon Cocoa's body will be his own, so his cabin better get used to having a horse in it. Lucien had been building himself up for this day for some time. He decided to finally let Cocoa mount him. Normally a dick that large would be borderline fatal to try to take- if he casts the incantation their bodies will be merging anyway, which would temporarily make it impossible for Cocoa to hurt him. They could experience a perfect moment together before spending forever together. Cocoa isn't interested in Lucien's scent though- Lucien always gives him a hand when he is already worked up by something else. So for that, Lucien purchased a tiny vial of mare pheromone, and in the bedroom preparing for Cocoa to enter from the living room, he gently rubbed in the pheromone around his anus- loosening his own hole while making it enticing for Cocoa.

Inside his cabin he could be sure Cocoa was the only other living creature close enough to him for the spell to target, and used the incantation as the final stage of preparation. Lucien loved big, solid men but unfortunately could not pull the look off himself- perhaps becoming a centaur will fix that? He instead leaned in the opposite direction; his skin quite soft for a male, smooth and rather girlish. His uncut dick only as long as a single segment of his pinky finger when flaccid, though expands to a mostly average five inch dick when hard. He was already erect from lubing his anus with the pheromone and practically drooling, thinking of Cocoa's giant meat pillar filling him. Once he is a centaur his butt will be large enough to take any horse anytime! He felt an odd tingle and knew without doubt that the incantation worked the moment he finished. His body has become somewhat amorphous as well as Cocoa- but only in regards to each other, so; apart there was no perceivable difference.

He stood naked in his bedroom with a big smile, and called to Cocoa to come. As soon as Cocoa was even close to the room he smelled the air- his huge nostrils flaring large. He had to duck to fit through the doorway and his shoulders nearly brushed either side of it. Lucien is going to have a hell of a time fitting in this cabin once he is a centaur. This will be a place just to sleep- it won't be large enough to actually live inside of. Lucien's dick twitched and a glistening drop of pre formed on the head. He is both excited and nervous about how this will work, and hoping it all goes to plan, since he is doing something that would injure him severely if it fails. Cocoa wasted no time locating the source of the intoxicating smell, and Lucien bent over onto the edge of his bed, presenting his soft, shaven smooth rump and nethers to his soon-to-be second body.

Cocoa licked his taint and butt, pressing his huge tongue into the opening, testing his target to see if it was a worthy sheath for his immense tool. Cocoa went to mount but missed his mark- pressing the hot spongy head of his equine phallus into Lucien's taint and having it deflect off under him. Lucien is considerably smaller of a target than any horse, and they are already not especially great at aiming those long meat pillars. He still gave several spirited thrusts, causing his shaft to lift and part Lucien's balls and grind the bottom of Lucien's dick against the top of Cocoa's cock. The heat, weight, and size in general made Lucien feel especially tiny, rubbed up against such a behemoth member. It looked so delicious- and soon it would belong to him! Lucien stood up straighter to use his own body pressed under Cocoa to help him guide himself in. Cocoa put his front hooves up onto the bed instead of trying to grab his mate like he normally would and tried to thrust in again- this time doing it.

He plunged the head in and a bit of shaft in the first stroke- he held back because he wasn't sure he could even get it in yet. Once inside, Lucien's anus gripped the dick and the horsecock flared its glans from the feeling of the soft, warm passage inviting him in, stretching the walls wide to test its limits. Lucien exhaled sharply- the size of the phallus so giant that it was shoving the air out of his lungs with the thrust! His entire body scrunched up from the force of the horse thrusting! Cocoa shoved in to the medial ring on the second thrust, and the several after that. This was Lucien's normal limit- this was as much cock as he could possibly fit into him, and even at that, his intestines were being shoved to the sides as the wall of the first bend was stretched up into him to press into the underside of his stomach! Normally that would hurt... a lot. It didn't now though. Cocoa cannot damage the tissue, so the pain receptors did not react, only the pleasure receptors trigger.

Lucien huffed with every thrust- having to gasp for air when Cocoa pulls back before the air is shoved out on the inward thrust again- his internal organs getting shoved back and forth like he was a human accordion. It felt so good, but it also tickled his emotions, giving Lucien a sort of emotional high off knowing he could take such a monumental dong. Feeling so tight, so full- stretched around the giant throbbing shaft like a human condom! He would have grabbed his own bobbing dick below him but definitely needed both arms to brace himself against the thrusts. An odd automatic pleasure started to fade in on his shaft even without touching it. He made his own phantom thrusts a few times, closing his eyes a moment to concentrate on the feeling and then opened them wide when he realized he was starting to feel his shaft penetrating something that was not there! Or more accurately- something that was not in that location. He is feeling what the inside of his own butt feels like wrapped around his cock- because signals sent by Cocoa's nervous system are crossing into his own! He can feel Cocoa's cock slamming deep into his body but also his body wrapped around Cocoa's dick! Both of them were feeling both sets of genitals at the same time! Even Cocoa's puffy anus started to dilate, miming the action of being fucked by a phantom copy of his own dong!

Suddenly when Cocoa pulled back- the tissue of Lucien's anus went with it! It felt like his entire lower body was being dragged out with the phallus- now partially fused to it! They were both caught off guard, so when Cocoa thrust in again his dick bent at the wrong angle- the anus around it was no longer a solid object and unable to direct his phallus forward.

Even though he was already breathless from having his breath literally beaten out of him- Lucien let out a long, sharp moan and his thoughts whited out in pleasure! A massive bulge appeared in the base of his dick- like his penis was trying to lay an egg! Cocoa is penetrating his penis from behind! Stuffing a horse cock into his human cock!! Cocoa made micro thrusts- managing to get a tiny bit further forward with each grind of his hips! The giant bulge in Lucien's dick bloated even worse at the base and then it started to shove further up into his cock! His entire dick was getting yanked longer! Precum oozed out as a lazy, unbroken stream as the giant phallus inside forced it out to make room. His cock felt impossibly tight and bloated- like he somehow painlessly attempted to sound himself with a baseball bat. It stretched longer with every shove but the bloated portion extended a bit further than that- so it was still expanding overall as the bulged portion equalized up the entire length so it at least did not look deformed. His foreskin remained exactly where it had already been, now ludicrously disproportionate to the shaft it is supposed to house. Lucien gasped and moaned frantically back and forth as he felt the horse flare shoving against the inside of his glans, trying to force them to take the same shape!

Lucien's urethra stretched longer than his glans, projecting off the head a bit and the corona became stiff with rounded bumps, stretching it wider and wider. A soft medial ring started to become visible as his shaft was overstuffed beyond the two foot length. With eyes wide; Lucien looked between their legs to see Cocoa's massive balls swinging closer and closer to his own- more and more of the giant horse cock shoving into his body. It was not just stretching him around the dick now, the two cocks are becoming mingled- the difference between them quickly vanishing as Cocoa pounded more and more of it into Lucien! The giant dong wobbled violently with every thrust- the longer it gets the further it gets from its anchor point in his crotch. The skin of his foreskin became tremendously thick and tunneled up the base as it fused to his underside to become a sheath- restoring a bit of stability to the cock as it was aggressively stuffed bigger still.

Lucien tried to reposition his legs to pull himself forward and try to give himself a bit of breathing room against Cocoa relentlessly stuffing more dick into his own, but quickly realized he could not move his legs! Cocoa's leg muscles twitted around his own in response and he realized they are one and the same! Half of Lucien's legs are fused into the inner sides of Cocoa's legs! He is being absorbed into the horse! In brief gaps of thought between being blanked in white hot pleasure- Lucien only now realized he had no idea how this transformation is going to configure them into a centaur. How does he get on top of the horse from below it if they are already merging together? Is his human body going to sink straight through the middle of Cocoa's torso to get to the other side?!

Lucien could not even moan anymore between frantic breathing as Cocoa's giant hot balls started to *plap* against the back of his own small human nuts. More and more horse cock getting stuffed into his. The coloration started to fade from soft peach to deep chocolate brown! His corona stretching wide with so much internal pressure it almost felt itchy, and yanked the glans from its helmet shape to a mushroom shape and even wider and tighter than that, expanding the entire last fifth of the shaft wider like the front of a trumpet! Their scrotums now touched and held together, no more space between them! Lucien tried to squirm but was too tangled with Cocoa to really move. Like someone had broken a dam inside of him; the equine bloodstream now crossed his own and his veins immediately yanked tight! The veins on his cock immediately turned dark violet and bulged from the surface, growing larger and fatter! His small human balls were cupped against the giant horse testicles but then their scrotum fused and the balls actually touched without a curtain of flesh between them! His balls quickly fused to and vanished into the giant horse nuts which expanded slightly with their stolen mass. Their shared dick started to buck violently, firing globs of precum a foot out from their dick- the horse prostate had been blocked causing it to backup, but now that the two dicks are the same dick; all the backed up fluid was escaping!

Now there was nothing left of Lucien's legs except a triangular strip of peach toned naked skin on the upper insides of Cocoa's thighs. Drool dripped from Lucien's mouth hanging open as he continued to gasp for air frantically. His dick bloated even further, stretching even longer! Cocoa's entire cock was already in Lucien- but now Lucien's hips are sinking into his too. So the length of dick that went through his anus and pelvis is now also getting shoved into their combined cock! It continued to stuff itself larger till their size was bigger than Cocoa's entire cock even was before- because now the former size of Lucien's own endowment was also added onto it.

When Lucien's hips fused his spine pulled tight and then suddenly started to pop! His vertebrae and the horses are nowhere even remotely close to one another- so in order to fuse them together more equally you'd need to spread those human vertebrae out a lot further than they are physically able to. Cocoa started to writhe in confusion at strange sensations, slowing his thrusting- not that he had anything to thrust into now anyway. The vertebrae were firing up through him- turning to calcium jelly to flow around his own bones before re-solidifying beyond them and then his own spine popped loudly, creating a gap for them to slide into! Cocoa's entire body was stretching longer, stealing length from Lucien's body!

Without a spine to give it a more solid shape- Lucien's own torso was stretching longer trying to match Cocoa, and his back was very slowly starting to fuse from the bottom up into the torso above him! He exhaled sharply and moaned at the same time, creating an odd sounding groan. A sudden surge as their blood mixed and his veins bloated tight and fattened huge! The blood sent a surplus of supplies to his muscles with exploded in size from his back out down through his arms! Then as the changes saturated deeper, his bones started to groan and enlarge! But... they were not growing equally. His middle finger enlarged as well as his arms, but not his other digits.

Cocoa nickered and let out breathy whinnies in alarm, confused as to what was happening to him. His spine got longer and longer and suddenly his skin felt too tight! Like someone had just vacuum sealed his skin to his muscles! Veins started to appear visibly on the surface as his skin pulled tighter. His muscles became outwardly visible and the cleft between deepened. Lucien's muscles bloated massively and forced his arms to stretch longer to try and keep up! Cocoa's muscles became more bulbous and his arms cracked and popped several times as they got slightly shorter- and his cannon bones started to shrink, and branch. Little nubs started to form toward the end as he started to develop fingers!

Lucien's eyes went wide. "Oh n-n-nuh OOOOOH..." Their dick shook, spitting another massive deluge of pre that almost hit him in the face before arching down to the floor. "N-no, o-oh no. The s-speeeEEH-oh, spell... fuses us into a centaur. It... it doesn't ha-AAHve a specific orientaaah...hah-ation!"

It makes a centaur from the component parts; it doesn't stick the horse on the bottom and the human on hop- that is only where the traits go. When they merge the spell no longer regards them as two different entities. It's turning Cocoa into the human half because he was on top when the fusion started!! Lucien is becoming the horse half! That means Lucien isn't stealing Cocoa's will from him- Cocoa is stealing his unintentionally. Cocoa is the one in charge. Lucien didn't steal Cocoa's body- he gave him his own body.

Lucien's torso and arms expanded tremendously, swelling larger and veinier as the structure deformed from human to equine, and his skin darkened to chocolate! Their combined spine continued to grow longer and now the extended portion arched upward as Cocoa's torso sunk inward, taking on a human shape! His muscles remained the same size, becoming bulbous and very outwardly obvious like an incredibly well-built human. His cannon bone shrank as the new fingers and thumb grew, and what had been his hoof shrank down into a fingernail- the digit it formerly sat on shrank down into the middle finger of the now human hand! Lucien's hands did the opposite- the middle finger grew and the hand stretched longer till it absorbed the surrounding digits and became a cannon bone. The nail on his middle finger darkening as it thickens and grows till it overcomes the mono-digit, turning into a hoof!

His voice grows louder and deeper as his lungs expanded tremendously, causing his rips to pop in rapid-fire as they expand forward as well, making his torso barrel shaped. His ribs re-connected with his displaced spine as his deforming torso fit into where Cocoa's torso used to be, as his current humanized torso is shoved up further away by their combined spine. Instead of a human pelvis- they ended up with a bizarre mix of a pelvis and a gigantic collar bone to mark the divide between bodies. The glutes of the human half are fused to the trapezius muscles of the horse upper back! The pectoral muscles of the horse trail into the rock hard abdominal muscles of the human.

Cocoa's neck bulges obscenely as it becomes much shorter and then after the muscles regressed to a size much more appropriate for a human neck. Lucien's head started to fuse into the torso, sinking into the massive abs! A centaur has two bodies- but only one head! He is being phased out! Cocoa's head made rather uncomfortable sounding wet crunching sounds as the bone started to compress and his entire skull seemed like it was imploding, shrinking down into a human skull. Information, memories, knowledge, and language flooded his mind and Cocoa's pupils quivered a moment before compressing in from rectangles to circles! His iris collapsed inward, becoming much smaller and exposing his sklera, making the color of his soft brown eyes much more visible. Lucien's skill dissolved into nothing and his face stretched across the lower abs for a moment before its features seemed to fade into the skin; Lucien vanished entirely!

The equine pelt stopped at the shoulders- leaving the human torso untouched. The very dark brown of the horse flesh shifted to the soft brown of a coffee with a few creamers in it on the human torso- from the paler skin tones stolen from Lucien. Cocoa's long flowing mane remained exactly how it had been; though on a human this meant that in the back, his hairline went all the way down to between his shoulder blades. His head had also not entirely gone human. The bridge of his nose and forehead were perfectly flat with one another and his nose is abnormally wide, with large nostrils. The bottom of his nose also is not a sharp angle with his upper lip, but rather a slope, giving him a sort of demi-muzzle. His ears are also still fully equine. He has grown a second mane of half-length hair that grows in a strip between his lower back and the upper back of the horse half.

Cocoa slowly stood up- or tried to anyway. His horse form was as tall as the doorways before unless he ducks- so that means there is only about two feet of room between his horse back and the roof- and four feet of human torso does not fit in a two foot gap. He had to bend his human back almost parallel with the horse back to shimmy his way out of the cabin. He took a deep breath with his large nostrils and gust it out again as he stretched in the open air. Several horse in his herd not too far away froze up to look at him, wondering what the hell he is.

Cocoa knows what he is- that knowledge came from Lucien; so it is now his. Because of his skin color shift, he also decided to rename himself Coffee instead of Cocoa. Cocoa is too cute of a name for a mighty stud like him anyway! He reflects on Lucien's memory of the spell to understand just what happened to him. He technically experienced that as well... those are his memories now... so, should he be sad? Lucien's, er... his spell failed? Well, sort of. They are a centaur, and their life expectancy is now extended. Eh, whatever, good enough.

Lucien reared up and let out a triumphant whinny, kicking his front legs high enough that he could have put his hooves on the edge of the cabin roof. He galloped to the herd to reintroduce himself. Many of them scurried away as he approached, but eventually all came back to smell him. He still smells of horse, so he must be one of them- he just looks really weird. He felt so... refreshed. So ready for... everything! The horse in him was giddy at the thought of the opportunities he now had- with human hands he could build a shelter for him and his herd, so they can be warm even in snowstorms! He could light fire! He could build weapons and traps to destroy predators looking to eat them! The human half of his mentality was giddy with pleasure, knowing a giant horse cock was finally his, and he could finally ride with the horses as an equal!

Coffee rode up beside one of the other studs, brushing their flanks together. He huffed and turned the other way. Coffee trot ahead a pace, lifting his tail to flick the stud in the face with it, presenting his rump to the other stud. Lucien was bi with a male leaning; now blended into Cocoa; Coffee is true bisexual. A mare trot past Coffee, slowing down when she smelled his musk. She glanced at the long semi-hard meat pillar wobbling around below him and he grabbed her huge muscular rump and steadied her. She looked ahead and flicked her tail to the side to show she was ready. Coffee was keeping his eye on the stud though, smacking him lightly with his tail. Finally the stud huffed and did a bit of a hop to try and mount this arrogant male to show him who is boss. Coffee took a step forward to his mounting attempt missed. The stud huffed again and charged forward! Coffee reared up and got his upper half up onto the mare, and the stud slammed into his back! As soon as the stallion thrust into Coffee, it shoved his hips forward and forced him to penetrate the mare! Coffee chuckled and moaned, flopping his human torso over so he could wrap his arms around the mare's neck and smell her mane as he played the middle of their threesome!

Well things may not have worked out the way he wanted, but Lucien should have known; once a bottom, always a bottom.