The human centibro

by Kjarri

Three hunky frat bros spend an afternoon getting closer.

“That movie wasn’t shit,” Aiden said, crossing his large, muscular arms over his well-developed chest. The huge blond frat bro leaned back, harrumphing.

I stared at him in disbelief, turning my body to face him.

It was Aiden, Joshi, and I on the couch. The rest of the frat was out at the quarry trying to pass this hot and humid May day in the bliss of cold water and high cliffs. The three of us decided to stay in and watch The Human Centipede, much to Aiden’s excitement and behest. We thought having the living room AC all to ourselves for the day would be gold, out of the sun, out of the heat, resting and relaxing. And then the fucking air conditioner broke in the first fifteen minutes of the movie. By the end of the first act the three of us had shucked our shirts and shorts, skin shiny with sweat highlighting our big, round pecs, six pack abs, and large, musclebound arms. All in nothing but boxers.

Aiden was the biggest out of us. Six foot six, three hundred pounds, thick and corded the way a linebacker on the football team could only be. His long legs stretched before him, size 16 feet planted firm on the carpet. Arms crossed over those ponderous pecs, lightly dusted with blond hairs, a pout secured itself on that scruffy and chiseled face of his, mop-like hair hanging down into his blue eyes.

Joshi positioned himself to face Aiden and me, mirroring my posture so the two of us could stare right at each other—over Aiden’s large frame that is.

Joshi was built. Not as big as Aiden, but sturdy. Hailing from India, Joshi stood five foot six, but what he lacked in height he made up for in width. The guy was about as wide as he was tall. A gymnast built thick and meaty. Joshi’s dark skin shone through his pelt of black hair covering his body, bearded face twisting into a frown.

“Dude, what are you talking about? That movie was nasty.” Joshi looked at me. “What do you say, Marco? Gross, right?”

I bit my lip. Like my frat bros, I too shared the developed chest and firmness of body. I stood between them in height, and even six feet. My years of swimming has left me with a more toned body than the bodybuilder width of my bros, and my skin lacked most of the hair they shared, though my beard was full like Joshi’s, just shaved closer to the cheeks. Gotta cut down on drag in the water. Even my skin color was a pretty decent split between Aiden’s light and Joshi’s dark.

Aiden turned to me, big blue eyes pleading. “Come on, Marco, you know that monster wasn’t anything. I bet we could make something so much better!”

Immediately the thought of the three of us, somehow merged and converted into a segment of arms, torsos, legs, sprang into my head, and the thought was exciting.

Aiden could see. Suddenly those blue eyes understood and he started bouncing on the couch.

“Dude. Dude!”

I don’t know how he knew what I thought. I don’t know why he was so excited. I could see his cock hardening in his boxers, snaking down his left leg, pink head emerging and engorging as blood rushed in, stiffening that beast of dick.

I felt my own cock doing the same.

“Aw shit, what do you have cooked up now?” Joshi said, rising from the couch and standing before us. His dark eyes searched ours and he too somehow saw what we saw, and his boxers began to tent as well.

“How?” The word was out of my mouth before I understood what I was asking. Silently Aiden stood, one foot taller than Joshi, and leaned down, mouths connecting in a deep kiss. My bros stroked each other’s thick torsos, hands gripping bulging biceps and delts as their mouths and lips crashed into each other, hungry tongues tasting the other. One of Aiden’s hands went to his boxers, pushing them down, big, footlong cock bobbing and spreading pre onto Joshi’s furry six pack. Joshi followed suit, his own eight incher jutting between Aiden’s toned and fuzzy thighs.

“Bros,” I said, my nine inch cock fully exposed, my hand gliding up and down as I watched my two musclebound bros make out before me. All of us were panting, the hot, humid May air thick on our skin, increasing our libido. Aiden broke from the kiss and stared at me, winked, then collapsed to his knees, spinning Joshi around.

Joshi’s large, globular ass, covered in the same black fur that masked most of his body, jiggled before Aiden’s face. Aiden licked his lips and dove right in between those pert cheeks, leaving Joshi gasping.

“Oh shit, bro!” Joshi said, pushing himself further onto Aiden’s now totally obscured face. “Dude, fuck yeah!”

Joshi gripped his pulsating eight inch cock and jacked hard and fast, pre sent flying off the tip of the angry purple head. He lifted his right arm and flexed, the mound of muscle that was his bicep peaking large as a football. He continued to flex as Aiden ate his ass, all that perfect muscle rippling in orgasmic joy. Meanwhile Aiden just kept pushing his face into those pillowy mounds of Joshi, to the point where his head was getting harder to distinguish, almost appearing as if it would—

POP!

Joshi moaned, back arched, eyes wide and staring at the ceiling without seeing. He struck a double bi pose as a jet of his pre shot from the tip of his stiff cock. He grinded his ass against the broad shoulders of Aiden, head now completely engulfed by Joshi.

I bucked hard. My cock shooting a wad of pre up onto my chest, my nose, lips, beard. I flicked my tongue out to collect some of the musky nectar, letting it swirl on my tongue as I kept jacking off to the sight of my bros merging.

“Oh fuck! I can hear Aiden, bro. He’s going wild! He-oh, oh fuck!” Joshi bucked, another arch of pre firing from his cock. He collapsed, arms catching himself as I watched Aiden’s shoulders push into Joshi. Joshi’s ass expanded, swallowing the thick delts and triceps, biceps, then forearms of Aiden as more and more of him was fed into Joshi.

Joshi was beside himself, grunting, panting, moaning as he furiously rubbed his cock, pre flinging across his hairy abs and the carpet. I was transfixed. So hard. So hot. Two huge bros of mine transforming before me. Fuck!

And then Joshi went silent. Mouth open, hanging in a perfect O as I witnessed Aiden’s huge slab of pecs descend into Joshi. Joshi’s eyes widened as he looked to me, huge grin on his face.

“Dude,” was all he said before a low rumble of pure bliss reverberated through his body and out his throat. As Aiden’s upper torso fed into Joshi, Joshi’s own torso began to lengthen. Another row of abs pushed out from between his original six pack and his hips. Then another. And another!

Each row was reminiscent of Aiden’s as they shoved into Joshi. The six newer abs were hairier than Aiden’s, but less so than Joshi’s above. They were thicker as well, but not as thick as Joshi’s originals. Even the skin seemed a few shades darker than Aiden’s, yet lighter than Joshi’s.

“Oh wow,” was all I could say as I beheld my merged bros before me. Joshi’s dark, scruffy face topped a long, muscular torso of twelve cobblestone abs, followed by Joshi’s big, bobbing dick, still spurting ropes of pre, immediately leading to his dark, thick, furry legs with a bit of space/spine connecting to Aiden’s set of long, powerful legs, his dick poking up and underneath where Joshi’s asshole had relocated, long enough to poke at Joshi’s orange sized balls.

It was so fucking hot.

“Dude,” I said, rising from the couch, slipping my soiled boxers to my feet and stepping out of them. Joshi shuddered, a ripple going down the long train of his body. And then he gasped.

“Not done!”

Fuck!

Two bulges appeared on Joshi’s sides, one on each flank, right between his original and new “Aiden” abs. The two sets of abs began to separate as the bulges grew larger, the unmistakable musculature of thick deltoids running to triceps and biceps, new arms appearing as the bulges extended, growing larger and bulkier.

Meanwhile, the space beside the bulges quickly ballooned into huge, pillowy pecs, once again an almost perfect average between what Aiden had and what Joshi had, hair similar to the abs right below. I could only stare as these jiggling pecs swelled so large, so heavy, so hairy. Pert nipples being forced down from the brawn.

The four legs of Aiden and Joshi pushed out longer along the ground. Joshi’s feet grew larger and larger, matching Aiden’s massive stompers and growing a bit beyond that. Muscle on Aiden’s legs thickened and became as powerful as Joshi’s, while also growing more hair. The tops of all four feet became dusted in a light sprinkle of hair as they all equaled out to what I could only assume was about a size 19. And their cocks. So large, frotting and bobbing, thrusting as the hands on the now lower torso of Joshi grew dexterous and nimble, long, large fingers reaching for Joshi’s now 13 inch cock, the left hand making contact and wrapping around the iron rod as the right hand tried to reach Aiden’s 13 inch cock behind, but was just out of reach. The back legs kicked up and pushed the lower limbs of Joshi/Aiden towards the upper, that massive back cock sliding along the underside of Joshi’s, and finally into the grasp of the new right hand.

“Holy fuck man,” Joshi panted. “This is incredible. Dude! Aiden wants you to join us. We gotta know what the full thing feels like!”

Joshi, beautiful, dark, and hairy, stared up at me, flushed and so long. Casually he flexed those four big arms, back twitching with strength to hold up those two massive torsos.

“It feels amazing, Marco. Get over here. Join us.”

Robotically I walked toward Joshi/Aiden and knelt down, taking Joshi’s handsome, scruffy face into my hands and planting a deep kiss on his lips, Our tongues entwined and I could almost sense all those arms and legs and length, as if they were drawing me in, curling around me and flexing, bringing me into the pleasure of my two frat bros.

I could tell as we kissed those big lower arms were jerking the front massive cock, spurts of pre shooting off it and landing on my legs and own aching cock. I felt feverish as I pushed further into Joshi’s warm mouth.

Too soon he broke away from the embrace, but a large smile plastered his face. “Marco,” Joshi said. “Turn around.”

My heart sped up. I stood, my hard cock rigid in front of Joshi’s face. He leaned forward and took it in his mouth, right to the root. His and Aiden’s long body began to undulate and he bobbed on my dick, waves of rippling musculature. I thrusted into his face, my cock sliding down his throat. He didn’t gag, but brought his upper arms to grope my ass as his lower left let go of his turgid cock to balance the massive upper body of two torsos.

I needed to be a part of this.

Unceremoniously I pulled my cock out of Joshi’s hot mouth. He stared up at me, I down at him, and between us an urge unlike anything I’ve ever experienced passed through us both. We shuddered. Ready. I turned around and bent over, exposing my ass.

Joshi wasted no time. Immediately I felt the soft bristles of Joshi’s beard between my cheeks, his deft tongue probing at my hole. He got it in easily and I squirmed as that thick tongue of his worked its way deep inside of me, his lips pushing at my opening, jaw pressing harder and harder, beard tickling deeper and deeper until—

POP!

Dude, I heard Joshi say.

Dude, Aiden said.

“Dudes!” I shouted out loud, hands going to my hard cock, pre launching from the tip as I wriggled my ass against Joshi’s wide delts and shoulders. I flexed my ass, the feeling of Joshi’s shoulders against my cheeks ringing alarm and pleasure in my head as I felt how wide my sphincter grew to accommodate not only Joshi’s thick neck but head as well. And his head! It felt so full down there, my prostate screaming in delight from how much was being pressed upon it as well as filling the space.

A whole head. Inside my ass. Unreal! Especially considering the biggest thing up there before was Aiden’s footlong cock.

At that I heard Aiden’s laugh in my mind. Yeah, Joshi was thinking the same thing at this point.

Joshi laughed as well. And moaned. Fuck, I knew it would feel good being in Marco, but I wasn’t expecting this!

“Expecting what?” I asked.

You’ll see, my bros responded.

And then everything was electric.

The upper arms of the body of my merged bros reached up and pulled my ass wide, thick fingers hooking into my sphincter and practically diving in. Those big, thick, gloriously muscled arms of Joshi’s reached into me, broad hands, vascular and hairy forearms, strong elbows and finally those basketball biceps and triceps, filling me far more than Joshi’s head had. I saw stars.

Fuck yeah bro, take my arms into ya. Feel them become a part of you.

I could hardly register what Joshi was saying as his arms and shoulders slipped into me, those big, bulbous pecs following suit, his furry chest tickling as it slid into me, a burn like when a bro’s cock hits just right inside began to inflame on my sides, right above my hips. As soon as Joshi’s shoulders and pecs slid all the way into me, I erupted.

I didn’t cum, but it felt like I was as my hips and legs stretched away, my back elongating as the burning at my sides reached out, muscle and bone and strength pushing out from what I realized was going to be my second set of shoulders topping what will become my second torso.

No longer could I reach my cock to stroke it as the space between my abs and dick extended, a dusting of hair burgeoning from the skin of the two slabs of meat that quickly came to resemble giant, granite pecs. Pert nipples burst forth from my meaty muscle tits and I reached down to pinch one.

A collective moan shared between my bros and I washed through our long body.

Wait to do that with the second set of arms, bro, Aiden said.

Fuck I couldn’t wait.

Through will or through practice my legs pushed back and my ass swallowed what was the remainder of Joshi’s hirsute torso, slamming onto the last set of arms. Simultaneously two big, corded, veiny arms matching my skin tone shot out of the new set of pecs, leaving a sweet fiery sensation as nerves sparked to life and the sensation of ownership dawned on me.

Do it, bro, Aiden and Joshi said. Together we lifted the left hand of our second torso, big, meaty, dusted with brown hairs, and brought it to our left nip of the corresponding torso. Between the pointer and thumb we pinched and cried out, our big cocks shooting identical volleys of pre. All of our arms shook, our legs, our minds, as we about collapsed from the sensation.

And there was still more to go.

Growth picked up again between my legs and the second set of pecs, abs popping forth, converted from Joshi’s to ours, cobblestone and deep, lightly hairy and tan. Like a good stretch our back lengthened, pushing my legs further away from me, but pushing my possessiveness further away too. They were our legs. This was our body.

Understanding, we said.

But still distinct, Joshi said.

Sharing, we said.

But amongst brothers, Aiden said.

“Oh, bros,” I moaned.

An almalgation of two sets of legs at the end. Huge feet and toes gripping into the carpet as the sets bucked, massive, throbbing, red and angry cocks grinding against whatever they could, absolutely covered in slick pre. Above, a torso, hairy and wide, muscles rippling in fiery exertion. As the arms held up the rest of this freaky bod. A set of legs, smaller, but quickly gaining the size its mates at the rear possessed. 10 inch cock just as hot and wild as the poles waiting for it to join. Two sets of incredible, thick, massive and flexing and hairy with a deep brown fur on the four pecs, treasure trails lush connecting the two frames. Four arms rubbed this beautiful, beastly body. And the head, our head, swimming with my bros and our undeniable pleasure.

“Fuck!” we screamed.

And then things went fast.

My—our—legs pushed back on that last chest, and swallowed it in five quick, growth inducing, steps. Our legs, long and hairy and hard and thick as oaks rubbed and slid and writhed amongst each other as what was my original legs joined them at the front of our lower body. Three massive, 18 inch long cocks jutted hard into the space around them, impregnating the air in a thick, musky sent of our hot, sweaty body. Six massive feet, sizing losing meaning at the 22 inch long dogs that rubbed against each other, soft sole to fuzzy toes and top. Our legs were a mess as we tried rubbing them along our cocks, body, anything and everything.

To feel. To experience together. Everything.

Moans internal, reverberating in our minds. A chorus so heavy, punctuated with gasps, exclamations, pants and begging, happiness and a joy that filled our three hearts with a love and connection that the third torso popped into existence, one second still being produced by our extending spine, the next an orgasmic jolt ricocheting across the elasticity of our mind as the legs, pecs, and abs spun out in rapid succession as the muscle burned and flexed and became.

The breath left our body, three sets of lungs deep, in a rumbling, baritone shudder of ecstasy.

Dudes, I said, not bothering trying to speak as our body roiled in the sensation of existing.

Fuck yeah, bros! Aiden exclaimed, I knew we could do it!

Aiden’s excitement elicited yet another chorus of delight.

Bros, we sang.

We need to get to these cocks.

An idea, a plan, and soon action propelled our body to roll onto our long, long back. Our massive legs bent at each knee, sticking high along the train of our pelvis, massive, bucking, foot and a half long cocks pointing to the sky with weeping eyes. We licked our lips. Time to dive in.

With a core strength popping our 18 abs out and flexing our couch cushion sized pecs, our three torsos flung up, our head about scraping the ceiling as we slowly lowered these giant torsos to come at rest just above the peaks of our quivering cocks. Mouth perfectly inline over the rearmost cock. Eyes taking in the sheer absurdity of what became of our former selves.

Fuck we’re amazing, Aiden said.

Bros, we’re fucking perfect, Joshi said.

So big, was all I could think.

So we dove onto that succulent cock, lips locked around the flaring shaft, tongue lapping around the plump glans. The taste of our pre was sweet, tangy, and or so quenching, pushing us further onto that fuckstick as our top torso’s big, meaty hands wrapped around whatever our mouth couldn’t.

Our other cocks couldn’t not be part of the joy!

The second set of arms, on the second torso God we are so fucking sexy fuck this is incredible! brought another pair of so big, fuck so big, massive and manly and sexy! our big hands to the trembling so many cocks, oh fuck, big, manly, sexy, fuck! second cock and the last three torsos, six arms, six legs, huge, manly hairy feet, pecs, biceps, muscle muscle muscle! cock encased in the right hand of our third cock, pleasure, bros so happy so happy and hard and hot! torso.

We can’t put into words the experience past this. This level of utter connectedness and sensual bliss can’t be a verbal exchange. To truly know, to truly feel how we feel, you’d need to join us.

Won’t you join us, bro?

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