Gym Bros

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#13 of Commissions

Two large, buff, extremely musky males end a workout session by enjoying each other's gym funk and use it to have some post workout fun.

A second commission for https://www.furaffinity.net/user/happy27. Contains rimming, sniffing, dirty jockstraps, face sitting, and a loooooooooooooot of really, really, really, really heavy musk.

I actually finished this a while back, but I've been preoccupied with other things that it's taken much longer to post than it should have.

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6575 words


George purged his lungs of oxygen before taking a deep breath as he bent his legs, squatting down into a sitting position before beginning his final attempt to stand back up. The move wasn't easy for the large, muscle-bound rhinoceros given the 1500lbs of weights resting on his shoulders. His final rep of 20 in a total of 10 sets for his final workout was proving to be quite strenuous, but he was determined to finish his squats. As he pushed the weights up, contravening gravity's effect on the massive barbell and numerous plates, his body reflected the grueling task he was trying to accomplish. His muscles bulged, every vein in his cracked skin displayed, grunting loudly as he grit his teeth.

Though it took a second for the massive ungulate to begin standing again, he was able to raise the ¾ ton slowly at first until his legs were straight and he could raise the weights no higher. With a satisfied grunt, he set the barbell down on the bar holders and stepped out from under, relieving himself of the inordinate strain and sighing loudly with exultation. Taking a moment to catch his breath, the gray pachyderm took a couple steps forward to gaze at his form in the wall-mounted mirror. Standing just over 9 feet tall, the rhino was a mountain of a man whose body reflected his years of bodybuilding dedication. His biceps and triceps bulged out like enormous watermelons, his forearms and calves were larger that many smaller anthro's heads, his chest protruded out like a pair of large, fleshy pillows, and his thighs were so large they could fit a small anthro mouse inside. His abs were clearly defined and his ass was large and rotund with a thick, hairless tail resting between each glut with a thick tuft of black fur on the end.

His body was sparsely speckled with curly body hair along his chest, stomach, arms, and legs, while his pits, crotch, and ass crack saw a much denser bush. The only thing covering his practically naked body was a large jockstrap with an immense bulge outlining his giant penis. If George told anyone that his jockstrap was white when he got it, they'd find it impossible as the garment was such a deep shade of olive from countless workouts resulting in immense drenching in crotch sweat and not once seeing the inside of a washing machine. The rhinoceros's body had a thick sheen from heavy perspiration during his workout, long trickles of droplets gliding down his arms, his torso, and his legs, pooling at his feet. His jockstrap was soaked in rhino sweat and dripping steadily onto the floor. The squat rack the pachyderm just occupied had a thick pool of bodily secretions where George had been squatting.

Having finished his workout, the ungulate flexed, taking different poses, feeling up his own body, and taking pride in the protruding hills and deep crevices outlining his immaculate muscles. He held up his arms and flexed his biceps and triceps, kissing them when he caught a whiff of the funky aroma wafting from his arm pit. Having gone several months without so much as applying deodorant, the gray-skinned behemoth had a fragrant musk so rancid that it could choke the sensitive nose of a weaker anthro. For George, however, it was exactly how he liked it, spicy, abundant, and powerful just like him. He buried his nose in his pit and took a deep, long inhale at his putrid body odor, the potent scent causing a stirring in his crotch that made his cock grow in the confines of his filthy, soaked underwear.

"Grrr!" George heard from elsewhere in the private gym.

Taking a break from admiring his indelible bodybuilder physique and incomparable musk stench, the rhino turned towards the bench press rack where his partner and lover lay finishing up his own set. Laying on his back holding a bench press bar stacked with enough plates to amass over 750lbs was a bull, legs spread out, chest heaving, and wearing nothing but a filthy, olive-colored white jockstrap like his pachyderm partner. Unlike the rhinoceros, the bull was fully covered in a thick coat of reddish-brown fur from head to hoof, a thick, fuzz-covered tail hanging off the edge with a long lock of hair growing from the end. Standing, he'd be about 8 feet tall, shorter than the rhino, but no less intimidating to the average anthro. His body was just as ripped with muscles bulging from every inch of his form, though also not quite as massive as the three-toed ungulate.

His fur coat was drenched from the workout, his fur matted and clumped with copious amounts of sweat that was dribbling onto the floor to form puddles. Similarly to George, the bovine emitted a funk of intense body odor from months of refusing to shower, leaving his body covered in dirt, grime, and residual waste from effused perspiration. Spending just as much time in the gym as his dual-horned counterpart, the bull's musk was just as potent and just as toxic to more sensitive noses, but the strength and richness was just how he liked it. He lifted the barbell up off his chest, straightening out his arms as he finished his final rep, setting the bar on the holders and allowing himself to relax.

His chest heaved as he caught his breath, one arm hanging off to the side with the other resting on his belly. His eyes were closed, smiling to himself as he came down from the high of the strain he endured to improve his strength and musculature. As the seconds wore on, the bull noticed the sound of loud footsteps approaching and opened his eyes to see the tall, enormous mountain of a rhinoceros standing over him. Without stopping, he lifted a leg over the bovine and straddled his belly, his own stank fluid dripping onto the bull's matted fur. He smiled as George lowered himself down, resting on the bull's toned abs with his tail resting on the soaked cloth covering the bull's genitals.

"I finished first, Rex," the rhino said smiling seductively as the bull let out a sigh of feigned discontent. "That means I'm on top this time."

"Yeah, yeah," Rex replied. "Just try not to be a pussy this time when fucking me, alright."

George flashed him a toothy grin. "Got it. Destroy that ass."

Rex grinned back at George in a combative manner as the rhino leaned forward, placing his massive hands on Rex's chest to stabilize himself as he brought his muzzle down to Rex's. They both parted lips as their muzzles connected, sealing the gap with a kiss that immediately resulted in tongues darting out and invading the other's maw. Thick globs of saliva fell from George's mouth and into Rex's, sliding down the rhino's tongue and ending in the bull's gullet, which he gingerly swallowed. He brought his paws up and caressed the hulking pachyderm, one paw holding him behind his neck and the other grasping his flexed bicep.

They played tongue war in each other's maw, exchanging spit as they explored the inner chamber, feeling around along their teeth, gums, and the ridged roof of their mouths. Moans and grunts of pleasure escaped their sealed lips, Rex's hands feeling up his lover as George's hands fondled the enormous pecks below. After a couple minutes of sucking muzzles, Rex broke the kiss and craned his neck downward until his nose was positioned at the base of George's neck. Still coated in rancid sweat, the bull inhaled deeply the rhino's thick musk, shuddering erotically, his stomach aflutter and his cock growing hard in his underwear. He took another breath, huffing the odoriferous hide as plentiful pheromones induced his arousal, causing a large bulge to form in the tight confines of his jockstrap. His scent was strong, bitter, and hefty, as if the stink itself was weighing him down.

A few more huffs from the bull and George sat up slowly, hands moving down his torso and teasing the bulging muscles of his abdomen. Rex let his paws fall down to the rhino's massive thighs as he stared up at the flat-toothed smile above. "If you're looking for a turn on, I got just what you need right here."

The pachyderm brought his hands up and placed them on the back of his neck, flexing his arms and displaying the large clump of sweat-matted hair trapped in his arm pit. Rex instinctively flexed his cock in his underwear, drooling at the shimmering chamber under George's shoulder. His maw hung open as he sat up, the movement causing George to shuffle back a little, now sitting directly on the bull's crotch, his exposed taint rubbing up against the soaked bulge. Rex moaned as he leaned forward, the rhino turning to the side a little to allow better access to his pits. Rex took a moment to enjoy the view of rank perspiration dripping from his pit hair and dribbling down his side.

He breathed out, expelling the air from his lungs before leaning forward, pressing his sensitive snout up against the wet cracked skin. As small droplets of musky moisture invaded his nostrils, he embraced George's belly with both paws and took a deep breath in through his nose, flooding his lungs with pure, concentrated rhinoceros pit stench. As the smell saturated his olfactory senses, he rolled his eyes into the back of his head, the bitter aroma making him feel weak as his member ached to fill with blood, still imprisoned in its cloth cage. His asshole tightened reflexively and he let his mouth hang open, drooling in satisfaction at the indomitable musk.

His hands started exploring George's body as he took another hard whiff of rhino stink, his libido supercharged and climbing higher with every breath he took. He felt up the pachyderm's impeccable physique, rubbing his chest, feeling up his nipples, and fondling his abs. After several sniffs of fetid arm pit odor, Rex's brain was lost to feral lust, his crotch pulsing intensely with his rapidly beating heart. Moaning loudly, he let his tongue fall out and pressed it hard against the pachyderm skin, dragging it up along the surface and collecting as much liquid in his mouth as he could.

After a single lick, Rex brought the rancid fluid back into his muzzle and savored the taste, the same bitter and hefty aroma with a spicy aftertaste. He growled softly as he took another lick, lapping up more of George's post workout liquid residue. He licked the mostly naked flesh at first, but then focused his attention on the hairy bush in the center, closing his maw around the bushing and suckling it like a pacifier. George moaned as Rex sucked on his arm pit hair, drinking in the copious bodily secretions, his paws moving down to George's thighs. His fingers traced the creases of his quads, up and down the stone-like thighs as he continued cleaning out the rhino's fragrant pits.

After a few minutes of unceasing arm pit obsession, George stood up with Rex letting his tongue remain connected to his partner a moment before he relaxed a bit. He slowly opened his eyes to find his lover's crotch mere inches from his face. His heart rate increased and the burning lust in his loins managed to grow hotter. The putrid stink of crotch musk was already overwhelming him and he didn't want to waste it, so he grabbed a hold of George's thigh, gripping them tightly as he plunged his overeager nose hard against the filthy, sweaty jockstrap. His first inhale was stronger and longer than the first inhale of George's pit, the air so stale and heavy with groin sweat funk that it was burning Rex's throat, but he didn't care.

His cock and ass exploded with sexual ardor, the acrid stench invading his nostrils, enslaved to the undiluted scent of unwashed rhinoceros crotch, hot, fresh, wet, and permeating his sinuses. He shuddered as he huffed away, his cocked aching to grow to full mast, the heat of his own groin augmenting the discomfort and enhancing the erotic anticipation. Rex moved his paws back around to George's tight ass, the mounds at the top of his thighs as massive as the tree trunks below, softer in a way, but still built like a truck and perfectly curved. Rex squeezed the unimpeachable orbs, relieving his tension on the pachyderm's posterior as his brain went fuzzy.

His paws moved up along the surface as his nose remained glued to the malodorous garment. He eventually reached George's tail which had been swinging back and forth in excitement. He found the clasp holding the garment to the base of his tail and undid it, loosening the jockstrap before grabbing the waistband and quickly lowering it down, exposing George's massive package underneath. With his monstrous prick free from its covering, it was free to grow to full size, immediately filling with blood and growing hard and thick right in front of Rex's eyes. The pungent aroma wafting from the enormous penis gave the bull a shock of sensual ecstasy as he inhaled the rhino's funk. His huge balls dangled freely, bundles of pubic hair spread throughout, the acrid stench of odiferous testicles permeating the sweaty gym.

Rex pressed his muzzle hard against the base of George's cock as it grew to full length, an impressive 16 inches long and 6 inches thick. The bovine's paws wandered to the rhino's rear end, grasping the solid, muscular mounds and squeezing tightly, spreading them opening and letting the taint beneath breathe. He began licking along the shaft, large swaths of putrid sweat shocking his taste buds.

"Mh, you like that babe?" George asked, to which Rex answered with a soft moan. "Well, I don't think you're quite ready to fuck yet."

With that, the rhino pushed the bull's mouth off his groin and stepped to his side, gripping the waistband and sliding the jockstrap off and tossing it to the side. Rex watched with bated breath as George stepped over to straddle his bovine lover again, this time with his back to him. Rex began panting as he stared up at the thick, meaty ass with the tail wagging endlessly. Rex had leaned back to allow some room for George, who slowly began stepping back, moving his backside into the bovine. The bull leaned back more until he was lying down, George watching the whole time. Once on his back, George sat down steadily, aiming his butt right in Rex's face, teasing his partner with the sexy rump.

As Rex fidgeted waiting for the rhino to lower himself down, George finally gave the bull what he wanted and sat down on Rex's face, pressing the already odor-tortured muzzle in between his beefy pillows. With barely a sniff, the bull was met with a nuclear level of putrid musk so powerful that he cried out amorously as he arched his back, his cock flexing within his underwear. George chuckled and laid his head back as he rested on his lover's nose, the bull breathing deeply, filling his nostrils, mouth, and lungs with rhinoceros ass stink.

Rex was intoxicated by George's butt musk, the damp, musty cavern between the rhino's gluts completely infused with an odor so rank it made the bull's nose burn. Rex took several deep breaths from George's ass crack, inundating his nasal passage with the bitter fragrance, his cock alight with volcanic lust. He shuffled and bucked his hips, grabbing a hold of George's thighs and held on tight as if he could lose the source of his sexual stimulation at any moment. He was so overcome with lust that he began rubbing his muzzle up against George's taint, spreading the fetid scent into his face as he continued huffing away. With the sweat coating George's crack and cheeks, the bull infused his facial fur with the rhino's dominating stench. George's tongue lolled out of his maw as he moaned in pleasure at the snout massage he was receiving on his ass, wagging his tail with satisfaction.

Rex had rubbed his nose up against George's anus as he impregnated himself with the rhino's scent, insuring the potent aroma would cling to the bull's fur and remain a consistent source of arousal. When he stopped scenting his face with ass funk, he pressed his nose against the tight, concave opening of George's wrinkled sphincter. He whiffed and whiffed, moaning loudly and gutturally at the intense pheromones effusing from the pachyderm's ass.

With his libido ready to explode, he opened his maw and slid his tongue along the puckered surface, the accumulation of sweat and grime over months of heavy workouts and no cleaning left a volatile and lascivious taste of musk. He let the flavor linger on his tongue, swishing it around as it mixed with his saliva before swallowing the gross concoction. He licked again, lapping up every aromatic chemical clinging to the rhinoceros's butt from ballsack to tail base. He ran it up along the surface several times, the putrid taste jolting the bull's taste buds with ethereal ecstasy. George grit his teeth as his tail end was cleaned by his lover, the feel of the large, rough tongue tickling his taint and stimulating his organ. He leaned forward, bolstering himself up by propping his hands on Rex's stomach, staring down at the wet and dirty tenting jockstrap before his eyes. He licked his lips and let out another groan as Rex teased his ass once again with his masterful tonguing.

Rex spent several minutes dragging his tongue along the fetid surface, allowing himself to go mad with sexual ardor at the sensations dominating his senses, but he wanted more. Pausing a moment, he slowly pressed his lips against the cracked flesh of his lovers backside, parting his jaw to cover George's rear entrance. He sealed his lips around the rosebud, kissing it gently as he stuck his tongue out and began prodding at the opening. He teased the tight ring, gently poking it with his organ and making George tingle above. After a moment, he pressed forward forcefully, breaking the barrier and shoving his slick tongue passed the anal sphincter and delving into the dark depths of George's rectum. The rhino gave a deep but quiet roar of ecstasy, his cock bobbing as his anus was penetrated by the bull below.

Rex stuffed his tongue deep, as deep as he could, insuring that his taste buds could scrape along the surface and drown in the rut-inducing flavor of the rhino's intestines. The bull moaned through pursed lips as he frenched the tight orifice, tongue sliding in and out as if tongue fucking his lover. George let out a series of soft roars and moans as the exposed skin of his sensitive pucker was stimulated. George was breathing heavier, flexing his cock in response to the expert rimjob below. Rex squeezed and relaxed his paws, the pachyderm's thighs providing a solid support for the bovine.

George was feeling weak in the knees as the anal pleasuring was already building a steady climax. He heaved and leaned forward, Rex unceasing in his gluttonous feasting on his fragrant tailhole, the phallus between his legs standing upright, stone solid, and aching for bovine ass. Staring down between Rex's legs, he saw the tail flop around as his hips gyrated in sensual fashion. Unable to hold his arousal in check much longer, the rhinoceros, though loathe to do so, stood up from the bull on the bench, pulling his butt off Rex's face and forcing the bull's slobbering tongue from his anus.

George's sphincter sealed up again as it disappeared from the dark cavern of the rhino's asscrack, leaving Rex wanting. However, as the taste of pachyderm ass lingered on his taste buds and his cock struggled within his soaked jockstrap, the bull knew it would have only taken a short time before sucking off rhinoceros butt would cause him to blow his load, so he was thankful his lover halted his anal-charged olfactory assault. George let his tail fall between his cheeks, Rex whining as the beautiful rump continued to tease him while the pachyderm caught his breath. Taking a moment to allow his arousal to calm a bit so he could prepare for a proper mating with his partner, George stepped forward, clearing the bovine from between his legs, removed his jockstrap, and turned to face him. George placed his hands on his hips, his massive biceps flexing and his pecs protruding as his girthy cock stood tall and firm from the rhino's groin.

"Alright, cow," the three-toed ungulate stated with authority, Rex leaning up to stare George eye to eye. "Stand up, turn around, and bend over. I wanna get that fuck hole of yours nice and lubed before I split it in half."

Rex grinned mischievously and ravenously. "Yes, sir!"

The bull stood up, his body mere inches from his pachyderm lover, the height difference obvious as well as the difference in musculature. Though Rex was built like a tank, he couldn't compare to the magnificence of George's build, who was built like a mountain. The bovine stared up at the rhino who glared down with a wicked smirk in the corner of his mouth. Rex challenged him with a similar grin before doing as bid, turning his back to George and bending over the bench, holding himself up on his paws and displaying his hindquarters to the rhinoceros. George's dick twitched as he eyed the rump roast before him, a thick layer of fuzz outlining the giant, corpulent mounds of Rex's gluteus maximus. His tail dangled below, covering the crack and hiding his anus, giving George something to work for.

George licked his lips as he bent down on one knee, bringing his face to ass level with the bull. While tempted to immediately bury his face in Rex's backside, he'd been hungering for a sniff of the bovine's rancid, drenched jockstrap since beginning and figured now would be the perfect time to take a whiff. He leaned his head down and grabbed the end of the bull's tail, pulling it away to reveal a clear shot of the package nested between Rex's legs. He moved slowly and carefully, ensuring he wouldn't accidentally jam the end of his horn into Rex's rear. He brought his muzzle right next to the bulging cloth holding bovine testicles, pressing his horn up against Rex's taint and making him moan.

George pressed his nose up against the sweaty garment and took a deep breath, respiring in the disgusting stink of months of festering scrotum musk. "Rrrr!" he moaned as the odor shocked his nostrils, his whole body tingling with sexual delight. The rhino grabbed Rex's legs and fondled them, feeling up and down the furry, meaty, muscular pillars and he huffed the bull's crotch smell. The soaked underwear was leaking driblets of sweat, some of it dribbling down to the rhino's nostrils, invading his sinuses and feeding his lust. He began rubbing his nose along the surface, scenting himself with the acrid aroma, titillating Rex who shuddered with amorous stimulation. George's horn was rubbing up, down, and around along Rex's perineum, massaging the muscles between anus and testicles, tickling the bovine's libido.

After his appetite had been wetted by the savory musk of trapped, rank balls, the rhino pulled back a little, holding the bull's tail out of the way as he moved his face upward. He watched as he ascended the muscular rump staring back at him, the rotund cheeks and the deep cavern. He stopped once he spotted the bull's rear entrance, the large, wrinkled, concave surface of male, smelly, bovine anal sphincter. George licked his lips as he leaned forward, pressing his snout up against the tainted surface and quickly inhaled deeply, the powerful, pungent, sensory drowning reek of bull anus cascaded across the rhino's nasal capillaries, over his tongue, down his throat, and into his lungs. The stink was amplified by the fur coat covering the surrounding area, the keratinous fibers having absorbed months of the bovine's odoriferous stench and bolstering it over time to produce an olfactophile's wildest fantasy. The rhino's head became fuzzy as he took another huff, the strength of Rex's smelly rump putting the pachyderm into rut, his groin burning with volcanic heat of erotic ecstasy and he needed more.

George grabbed a hold of Rex's muscular thighs, pressed his muzzle harder against the furry, musky seat, and took a deeper, longer inhale. Rex groaned at the treatment to his backside, the tip of his tail twitching and gently striking the rhino's face. George bellowed at the smell, continuing to charge his arousal with the bitter stench of bull anus. He massaged the bovine's thighs, feeling up the years of hard work and dedication, further augmenting his rut. He continued sniffing Rex's butt as one hand moved from thigh to rump, fondling the stone-hard protrusion of the bull's hips, squeezing it with his thick, hooved fingers. Rex let out another grunt before George gave the rear end a heavy smack, causing the bull to jolt and moan sensually, his cock constantly flexing in his underwear.

George sniffed away at the rank butthole, salivating heavily at the richness of pheromones the bull's backside produced. After a couple more minutes of pure olfactory titillation, George stuck out his tongue, covered in drool, and dragged it up along the taint and over Rex's tight, wrinkled rosebud. The puckered ring clenched in response and Rex moaned loudly at the sensation, shuddering with lust and anticipation of the rhino's mounting. George licked again, fervently taking his time to slide his taste buds along the aromatic surface, soaking up the chemical stimulants that burned his tongue and throat with the egregious taste of ass. His cock dripped copious amounts of pre as he slavered along the bull's butt, a slick trail of rhinoceros spit matting the surrounding fur and making the large, smelly orifice shimmer.

As the exterior sphincter muscles and the surrounding area glistened with horny rhino saliva, George pressed his tongue hard against the puckered hole until it split, shoving the organ inside. Rex tilted his head back as his anus erupted with sexual ecstasy at the intrusive act, every nerve ending erupting with jolts of pleasure. George pressed inward, his tongue sliding deep into Rex's bowels, several inches of rhinoceros tongue delving into the dank cavern of the bull's back door. George continued fondling the bull's musculature as he frenched the bovine asshole, closing his eyes and tongue fucking the stud. In and out, spreading his overflowing spit along the walls of Rex's sphincter, lubricating it for the next step. His fingers kneaded the bull's fur-carpeted backside, his hand going back and forth along the bumpy surface of his thigh while the other ran circles along the curved backside, squeezing hard as his groin burned with desire for his bovine lover.

Once George had basted his partner's asshole with rhinoceros spit and saturated his taste buds with the pungent flavor of bull anus, the pachyderm pulled his tongue out of Rex's butthole, the organ exiting with a loud sloshing sound. Rex groaned and George patted the bull's cheek as he grabbed his moist jockstrap and stood up. The bovine was breathing heavily, overwhelmed by a budding orgasm that had built up at the smell and taste of his lover's rank privates and further progressed at the rhino's expert rim job. His eyes were closed, and so was taken aback as he suddenly felt a wet garment being wrapped around his muzzle, pressing against his nose and jaw, keeping his mouth closed. After a quick inhalation, the musky odor of rhinoceros cock filled his nostrils and his cock twitched, the bull relaxing at having George's dirty musk-enveloped jockstrap worn on his snout.

George wrapped the waistband around the bull's horns, comfortably holding it in position to allow the bovine an unremitting supply of sour, stinging rhino groin stench. The bull kept his paws firmly on the bench, letting the pachyderm dominate him as per their agreement. With the stink of his underwear holding his lover captive in submissive lust, George stepped in back of Rex, his 16-inch long, 6-inch thick, rigid, veiny erection leaking pre like a broken faucet. The rhino licked his lips, the taste of the bull's ass lingering in his mouth, before gripping the bottom's tail and moving it aside, once again displaying the bovine's pre-lubed, pre-stretched ring.

George slid one hand along the bull's back while the other held the tail aside, his cock so hard it remained parallel to the floor and aligned with Rex's tailhole. George took a small step forward to press the tip of his head up against the tight bud, Rex panting in anticipation and huffing away at the musky underwear. George leaned forward, smiling and grunting as he readied himself for penetration. He grabbed the bull's waist with both hands, grit his teeth, and pushed forward, pressing his eager cock passed the tongue-tested pucker and splitting his partner open. As the elastic sphincter muscles stretched to accommodate the massive girth of the rhinoceros's penis, Rex grunted into the rancid jockstrap. Though not the first time the rhino had speared him, his shaft was thick enough to prevent the bull from ever fully acclimating to it. A sharp sting rung out throughout his nether region, affecting his arousal and causing a blazing inferno of euphoric ardor to explode in his groin, the sweat continuing to build in his underwear as his cock strained against the fabric.

George inserted inch after inch of his large, mushroom glans, his nerves erupting with pleasure, causing him to throw his head back and moan loudly. Rex chuckled below as the rhino continued to plug his ass with girthy pachyderm meat, spreading his anus wider and wider, the wrinkles disappearing as they stretched beyond their natural limits. The bovine intestines ballooned out as the invasive rod filled out the bull's digestive tract. The stinging increased in his ass which increased the burning in his libido, every millimeter of George's smelly dick a stimulating encounter for the horny bovine. The length moved passed Rex's prostate, pressing down against the sensitive organ, making the bull convulse with erotic abandon. George further inserted his phallus into Rex's tailhole, the sensation of the bull's mucousal innards assisting in invigorating the pleasurable sensations in his cock.

After a long minute of intestinal delving, the base of George's penis pressed through the spread cheeks and opened Rex up to his widest, the rhino's hips now resting against the bovine's ass cushions. Rex let out a bellowing moan through the jockstrap as his butthole was split apart, the tantalizing of his arousal so effective that his climax was close at hand without his paws every coming in contact with his crotch. The bull was tempted to rub his trapped dick to induce orgasm, but kept them planted on the bench, allowing his lover to coax it out of him by other means. George took a moment to catch his breath and allow his partner to acclimate to his size, enjoying the warmth the bull's colon provided his hungry member.

Primed and ready, George wrapped his arms around the bull's chest, holding his protruding pecs tightly, spreading his legs out a bit, and slowly pulled his hips back. Both ungulates moaned softly at the retraction of George's pole from the stretched anus, several inches of hot, gray, rhino meat sloshing out of dirty, musky, bull pucker. The rhino roughly shoved his penis back inside, the two responding with a grunt. George then slowly built up a steady rhythm, in and out, several inches sliding past the anal walls in one direction and then the reverse. Rex's intestines collapsed and inflated to the rhino's thrusting, the bovine prostate experiencing sexual abuse that drove the bull wild with lust. George's hips were smacking the furry rump, echoing on the gym walls. The bench below squeaked, the weights clanging as the pair fucked against the equipment, though the two weren't worried as this wasn't the first time they tested the durability of the bench press.

Several minutes passed and George had steadily increased the pace of his hip gyrations. The sensation of Rex's nose up against the nether regions, his tongue lapping up the copious sweat on his hairy ball sack and musky ass crack, and the assault of his senses by the bull's unwashed scrotum and fragrant ass pushed him close to orgasm. Now with his cock squeezed tightly by Rex's constricting intestines the rhino was mere minutes away from achieving an explosive climax. However, Rex was closer to hitting his peak as the bull's sexual appetite had been teased since they finished their set. The manly odor of George's stink-ridden pits, the acrid funk of his musky crotch, and the putrid stench of his odor-infused asshole had already driven him over the edge of arousal. With his cock straining to grow fully erect and rubbing against the soft fabric of his moist jockstrap, he was primed to cum before George plugged his ass with his dick. Now, with his intestines inflated, his prostate getting pummeled, his sphincter titillated, and his nose bombarded with the inescapable miasma of rhinoceros genital stink, Rex was poised to explode at any moment. His body shook under the weight of the rhino, his legs weak and shaking, even with the rocking George's jackhammering was causing.

George grit his teeth and clenched his jaw as he was fucking harder and faster now, removing only a few inches from Rex's hole. He was gripping the bull's pecs, squeezing them roughly, his fingers focused on the sensitive nipples, causing Rex to shuffle underneath. The bull couldn't hold off any longer, the menagerie of stimulants pushing him over the edge. With several more pumps of George's cock into his depths, the bull's testicles finally released their contents, Rex's eyes rolling into the back of his head as his internal tubing flooded with male juices. After a number of reflexive clenches, the bull felt his urethra explode with large swaths of thick, creamy, male bull milk. With his dick still confined to his underwear, the aromatic spunk filled out the cloth underwear, mixing with his sweat and adding a new layer of musky odor to his already rancid garment. He ejaculated hard into his underwear, moaning loudly into George's, shaking violently at the sensitivity with which he experienced his latest sexual release. Countless ejections of semen into his only covering and he still had much fluid to relinquish. Eventually, his jock overflowed and began leaking, saliva-tainted jizz spilling out onto the bench press, staining it with the turbid fluid. After a couple minutes of intense expulsion, the bull's nuts were empty, the bovine feeling lighter as his climax dissipated, leaving him tired and spent.

The entire time, George was thrusting rapidly into his partner, his own climax approaching quickly. He held on as long as he could, but after a few more minutes ramming the bull stud, George couldn't hold back anymore. His vas deferens had filled with testicular juices, his urethra inflating with sperm and seminal fluid, overflowing to the point of spilling out from his cock without so much as flexing. Finally, he gave in, throwing his head back and roaring loudly as he finally flexed, spewing long strings of thick rhinoceros spunk deep into Rex's bowels. The bull never moved to remove the pachyderm's jock from his face, allowing the scent to incessantly drive him towards arousal. George humped slowly, removing only a couple inches and gently sliding his dick along the intestinal walls to milk himself dry of his orgasmic product. The sensitivity in his glans made the rhino shudder, clenching hard as sweat dribbled off the pachyderm's body from the exertion. Finally, George was as spent as the bovine below him and with one last flexing his cock was clean of male cream that Rex loved having inside himself.

The rhino finally stopped pumping, his cock fully embedded in the bull's ass, the chunky substance packed deep inside the bull's innards. The couple stayed like that for some time, catching their breath, enjoying the connectedness without the uncontrollable urge to fuck or get fucked. Rex was still holding himself up off the bench, though his arms were shaking, while George wasn't helping by keeping himself up by leaning on Rex's back.

Eventually, George finally smiled and gave the bull a hard smack to the ass, causing Rex to snort in response. "Damn, Rex! Haven't had that much fun in a while. I think your musk is getting stronger. It's makin' me so hot." The rhino awaited a response, but the bull remained silent, breathing loudly in and out through his nose. "What's goin' on, babe? You still gettin' high off my stank jock?" Rex still said nothing. "Can I have my underwear back?" Rex shook his head emphatically. George leaned in and whispered into the bull's ear. "Tell you what, you give me my underwear and let you get high on something much more stank."

Rex pulled off the rhino's jockstrap and handed it to his partner, the rhino taking it and slowly pulling out of him, his cock emerging from the stretched ring. Inch after inch exited the bull's tight sphincter with a slurping sound, the girthy length having shrunk slightly. The head appeared and finally left the smelly confines, flopping down as the half-erect organ freed itself from Rex's backside. The bull immediately changed positions, turning around and lying on his back, resting in his own emissions, his head resting on the bench.

"Alright, big guy," he said enthusiastically. "Give me that musky ass. Let me clean it for you."

George smiled, tossing the underwear aside and turning around, pointing his ass in Rex's direction. The rhino backed up until he was straddling the bull, wagging his tail in front of the aromatic rump, teasing his partner cruelly. Once Rex began to whine, George decided to give him what he wanted, sitting down on the bull's face, Rex's heart palpitating as a pair of hot, sweaty, hairy rhinoceros cheeks split apart as they rested on his muzzle. The odor was palpable, George's ass stench having grown more potent after their fuck session. Rex breathed it in, grabbing the rhino's thick, meaty thighs and massaging them as he drank in the fetid fragrance of pachyderm ass.

Rex inhaled for a few minutes before opening his maw and began lapping at the musty backside, his tongue traversing the rhino's sphincter and the taint surrounding it. The amount of sweat percolating the bodybuilder's rump and dribbling down into Rex's waiting maw was enough to fill the bull's stomach. The couple stayed that way for sometime, George simply resting on his lover's face while Rex lapped up every inch the rhino's fetid orifice over and over again. The heat and exertion from both weight-lifting and sex meant the rhino would continue sweating for some time, giving the bull beneath him enough salt-flavored, pheromone-imbued liquid to ingest and keep him horny indefinitely, making the bovine happy. The two relaxed in their respective positions and prepared to remain that way for quite a while.