Big Brother's Musk Slut

Story by wrenquire on SoFurry

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A short, 4k story inspired by some kink conversations with Zaggy Norse about incest play, musk, and body odor. Also these characters are 40 and 32 years old! Because middle-aged folks are hot, too UvU

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Clementine fussed with her skirt as her uber bumbled its way down the country road to her older brother's home. Satisfied there was not an actual hole in the red, ruffled fabric, she took her phone from her purse and opened her camera, using it as a mirror to check on her face. Despite the six hour plane ride, her hair didn't look mussed or frizzy, the copper curls currently twined into a braid when they fell past her jaw. Her hair was framed between her long, almost oval ears, the ossicones sprouting between them marking her gender for anyone who knew what an okapi was.

Not that most ever could tell. Her uber driver's only fumbling question their entire ride had been if she was some zebra hybrid, having clearly never seen one of her kind before.

To be fair, her family were a rare breed out here in the midwest.

They turned off the road into a long driveway that ended at a two story farmhouse. Its garage door had been thrown open, with an older car raised on its jacks. She just made out the legs, covered only with black gym shorts, poking out from under the car. Hooves scrambled against the cement as her brother, Jacob, fumbled out from under the car.

He stood up, working shirtless in the summer heat, and Clementine's heart fluttered seeing him. Her brother was just as tall as Clementine, with a respectable layer of muscle on him, a little stringy from age, a little layer of fat resting on his stomach and thighs. His front looked good without a shirt: chocolate red fur on his abdomen darkened nearly to charcoal on his pecs, each one still looking full and firm, dark nipples on display with how short an okapi's coat was. His shoulders and neck kept that dark coloring, before softening to red with a sharp streak of white across his face. His cropped hair had been salted with grey streaks, as had the dark, fine fur lining his lips. A sleeve of more white stripes coated his legs and forearms.

At one time, Clementine had been a younger, thinner version of her brother. But they still matched up in many ways. Same wheat-colored eyes, same hair color, same fur patterning, matching... Well, Clementine couldn't help but feel some heat rush to her sheath seeing her brother's bulge and the promise of his thick, copper treasure trail that ran down his stomach to a thatch of pubic fur peeking from the waistband of his shorts. He couldn't be wearing underwear.

The uber pulled up to the house, and a look of recognition worked through Jacob as he noticed her in the backseat. He ran to a sink set in a corner of the garage, trying to scrub the grease from his hands.

"This it, ma'am?" the otter in the driver's seat asked.

"Yes, thank you," Clementine said, already throwing open the door. She took a step towards her brother, then remembered her bag in the trunk. She rushed around to it and took a suitcase out of the back. She waved to the driver when she got clear of his car, and he did a u-turn into the yard, Clementine already rolling up with her suitcase. She dropped it and her purse at the threshold of the garage.

Jacob had finished washing his hands, arms akimbo, hip cocked. "I thought you said your flight wouldn't get in until the evening."

"I wanted to surprise you," Clementine said. "Is Poe here?"

Jacob snorted. "You know he works till four today." Jacob got closer. The garage smelled of grease, but over that Clementine caught the scent of her brother: a sharp, spicy musk of a man who'd been sweating the last few hours. He opened his arms, and she slid in against him.

Clementine couldn't stop herself from nuzzling into her big brother's armpit, taking a deep breath of his musk. That raunchy smell almost had a sweetness at the end of it, and she had to resist the urge to just lick at the thick patch of hairs there. She shuddered, their arms now wrapping around each other. "Fuck, how do you always smell so good?"

"Heh, ever think you're just a slut for your big brother?"

"Mmm, there are worse things I could be," Clementine whispered into his shoulder, still smelling him. She allowed herself to bask in his scent, feeling her cock already start to drop and firm up in her boyshorts. The crop top she wore suddenly felt too stifling, she wanted his sweaty flesh against hers.

"Like what?"

"A dirty musk slut."

"Oh yes, that would just be terrible," Jacob teased. "How was your flight, you need something to eat?"

"I need you," Clementine said before reaching under the waistband of Jacob's gym shorts. God he was damp with sweat down there, sheath a little sticky, as his cock had also started to drop. Jacob liked to try and play it cool, but she knew: once her brother got too turned on he'd be a mess of male hormones and needy sex.

"Psh, can't wait can you?"

"Three months is way too long."

"You always were so clingy," Jacob whispered in her ear. He touched her chin, getting her to finally look up. His lips met hers, Clementine's moan muffled by her brother's forceful tongue. The dark purple, prehensile muscle met hers in a quick, twisting tangle, their tastebuds coming together. Clementine pressed into the kiss, rubbing the shaft of his growing cock as it quickly filled out her palm. That fat, equine-like, meat soon pressed against the fabric of his shorts before it started sliding down one leg. Her own dick throbbed in her underwear, dotting her crotch with a growing wet spot. Jacob's lips shifted against hers, and her tongue pressed into his mouth, now both of their oral organs exploring each other's palates.

By the time the dark crown of Jacob's cock peeked out of his gym shorts, he broke the kiss. Their tongues practically slurped back into their muzzles, Jacob's grip shifting to her elbow. "Let's do this in the bedroom."

"Not out here?" Clementine asked. "Worried about giving the neighbors a show?"

"No, but we're not spring chickens, Clem. If I go down on you I don't want it to be on concrete."

She giggled. "Fine, old man."

He reached up, plucking one of her hairs. She cursed, but stopped when he held a grey hair before her eyes. "You're not getting any younger, either, girl."

Clementine huffed and shoved Jacob towards the door. "Young enough to fuck you until you can't walk for a week."

"Assuming you can get your muzzle out of my balls, first."

"How are you eight years older than me and somehow still the brat?"

"I'm the brat?" Jacob asked with a dramatic clasp of his chest. He opened the door and she elbowed him inside, not worried about her things, urging her brother down the familiar hallway to his bedroom. She threw off her crop top by the time they reached it, shimmying out of her skirt and straining boyshorts as she crossed the threshold into Jacob's bedroom--then he snatched her wrist and flung her onto the slate-blue sheets of his bed.

Clementine landed on her back, unable to suppress a wild grin as she sat up only for Jacob to climb onto her lap. His weight and warmth against her welcome as the hands on the back of her head, guiding her into another kiss. Clementine whimpered as their lips met, her meaty, mottled cock already dripping against the fabric of Jacob's shorts. His fingers combed down her back while Clementine tugged at his shorts. She could not get them past a certain point, of course, but enough of the offending fabric had been moved that his cock and balls sprung loose.

The scent that wafted up to her made Clementine weak. That raunchy sweat of her brother's balls overpowering any other smell. She swooned, Jacob's tongue in her mouth a sweet contrast to the musky bouquet coming from his crotch. Her nostrils flared, and, caught up in his everything, Jacob easily knocked her over. He followed, kissing her neck, nipping there with his blunt teeth.

Clementine arched into his touch, her dick brushing against his. She humped blindly against her brother, reduced back to the thoughtless seventeen-year-old that threw herself at him all those years ago. He kissed lower, one of those big, rough palms of his squeezing her left breast. She bit her bottom lip as he teased her tit.

"I swear these get bigger every time I see you," Jacob whispered as he groped her flesh, her breast just big enough to fill his palm. Her other he kissed, long purple tongue dragging a lazy spiral to her dark nipple.

She whimpered, grabbing his hips so when she ground up into him she felt his dick press against hers. "I-I thought you didn't like boobs."

"I don't care for them much," Jacob said, looking up from her chest. "But I love making you squirm, Clem." Her brother's lips sealed around one of her hormone-fattened areola, sucking hard against the stiff, black nipple.

"Fuck!" Precum spilled from Clementine's blunt tip. His teeth teased her teat just as he humped into her, his medial ring grinding into the base of her shaft, cocks sliding together with more precum spilling between both okapi. Clementine resisted the urge to wrap her legs around him, instead complaining:

"Dammit, Jake, q-quit teasing me."

He released her, with that stupid, handsome smirk on his face. "Can't help it if you're so fun to tease," Jacob said as he rolled off her and kicked his shorts to the floor. Clementine scooted backwards so neither of them would be hanging on the bed's edge, and Jacob followed. He sat on her thighs, touched her cheek and leaned in, "What's my little sister want, hmm?"

"You're going to make me say it?"

"Who do you think I am?"

Clementine's ears flattened at that. She wanted to be forced, of course, but that familiar rush she first felt at seventeen, when a younger brother practically begged their older, coursed through her. She said, "Sit your balls on my face."

"Mmm, that doesn't sound like something an older brother should do with their sibling."

"I need it. Your musk is too good."

"Hehe, alright. My poor little musk slut," Jacob growled before he swung around, quickly straddling her chest. She grabbed his thighs and almost yanked his backside onto her muzzle. Clementine ground her snout against her big brother's sweaty taint and moaned, unabashedly. The thin coat of fur there was damp, and the built up musk quickly smeared into her face. It was earthier here compared to his pits, but delectable. Her cock twitched, leaking against her abdomen as Clementine's tongue snaked from her mouth.

She swiped up her older brother's sweat, every part of her prehensile organ sliding free to grind her tastebuds into his damp flesh. While the flat base slid and ground against his taint, the tip of her tongue dug into the fleshy seam of her brother's fat nuts. Just the taste of her sibling's pheromones made her flare start to swell. Clementine's nails pinched into Jacob's thighs as he sat fully on her face, pressing her head and ossicones into the bed. He smothered his little sister, each breath she took a suffocating swirl of his sweaty musk.

Jacob's fat, mango-sized testes, sagged against her neck, her tongue practically blanketed by the wrinkly flesh of his scrotum. She loved it. Her senses feasted on her older brother, long prehensile muscle wrapping around one fat nut. She massaged it with her tongue, worshipping her brother's masculinity, unable to get enough of that raunchy, sweaty musk on her palate.

Clementine got so lost in him she almost didn't notice Jacob's hands grabbing her ass. HRT had made her butt lose some of its perkiness, filling it out with fat instead so that Jacob's fingers could squeeze into the flesh, blunt nails digging in a little as he tugged Clementine's back half up, curled in on herself. Her big brother's thumbs spread her cheeks. His nostrils flared at her scent, which had once been very similar to his own. Now it was sweeter, more fragrant, even if her taint still had the earthy, musky tint of an okapi backside.

He nosed Clementine's pucker and felt something firm there, only now noticing in the heat of the moment the dark colored plug she wore, its silicone blending in with the charcoal flesh of her pucker and taint. He grabbed its handle, giving it a small pull, finding it firmly rooted inside her.

"Heh, you wanted to me to fuck you soon as I saw you, didn't you, Clem?"

Clementine, mouth occupied, could only moan in response. She clenched down, pucker flexing around the toy inside her before her brother started to apply more pressure. She felt herself stretch like she had in the bathroom on the plane where she had inserted the toy. Her rim stretched wider on the silicone bulb, wrinkled flesh pulling outward as if it meant to cling on it, and Jacob, smirking, paused with the plug a quarter of the way free. He lifted his legs, grabbed his cock, and pressed it against his sister's panting lips.

"Suck on this baby, that's a good girl," Jacob growled as his little sister immediately wrapped her lips around his fat glans. She moaned as he rewarded her with stringy, jets of his precum while his hips slowly settled back down. More of that cock sunk in her suckling maw till it pressed into her throat. Clementine wiggled down, neck tilting back into a more comfortable position, ossicones pressed into the mattress, as big brother's meat filled her gullet. She swallowed around it, sucked in breaths through her nostrils which were smothered in Jacob's scrotum. He settled there, not fucking her face, not hilting her maw so she couldn't breathe. What little breath Clementine heaved into her lungs was more her big brother's pheromonal raunch than oxygen.

And she sucked and swallowed on his member, satisfied to let him drool precum down her throat, lips kissing his medial ring. Her tongue stretched past them, working along to the base of his cock, tip snaking through sweat-soaked pubes. Her eyes fluttered as Jacob finally wiggled her butt plug out of her. The bulb was almost as thick as her brother, ensuring she would be ready for him to fuck her right away. Still, Jacob could not help but shove two fingers inside her.

Clementine groaned, hooves twitching in the air, as her big brother's fingers pressed right into her prostate. An explosion of tight, pleasure filled pressure radiated from her groin, pressed into her cock and balls. Her flare fattened up some more, Clementine already put on edge with all her slobbering worship. Her ass clenched down on Jacob's fingers, inner muscles milking those digits. Her rim winked and flexed around them as Jacob growled, "That's my slutty sister."

Perhaps if the fat, inviting ass of his little sister hadn't gotten him so worked up, Jacob would have just teased and fingered her until the slut came, but he needed so much more than that pretty okapi maw wrapped around his meat. He rolled off her in a flash, Clementine whining as his cock slipped free of her mouth. She took a heavy breath while her brother grabbed her hips, not needing more than a nudge to get Clementine to roll on her front.

Jacob spanked her, enjoying the little yelp it got from his sister. He didn't let her get up, but straddled her thighs. Clementine sucked in a breath and hiked her tail, knowing a penetration on her stomach would be harder to manage. She didn't tell her brother to stop, however, enjoying how his big, warm palms squeezed her buttcheeks. He grabbed the left one and spread her, his other hand guiding his flat cock-head to her pucker. Jacob hocked a loogie and spat on the dark, wrinkled rim.

Clementine buried her face in one of Jacob's pillows, trying to relax as pressure mounted on her asshole. She felt that fat, equine-like tip caving in her pucker, soft entrance depressing before it started to stretch around his cock. Those glans, her brother's, felt so right every time they wedged their way inside her. She'd grown addicted to it over the years: no cock quite right for Clementine like big brother's. Both siblings gasped as he suddenly popped into her tight heat, her silky walls welcoming his length.

Prick lodged inside her, Jacob grunted and let go of her butt. His palm slid to the small of her back, rubbing gentle circles above her back dimples. "Doing okay, Clem?"

"Mhmm!" she answered through the pillow still stuffed against her face. She squeezed her pucker, massaging the flesh behind Jacob's glans. An invitation: her body trying to draw his closer.

Jacob rolled his hips, more of that pole of soft-firm pressure, heated and pulsing, slipped deeper into Clementine's body. What once were fingers became a girthy cum tube grinding across her prostate, complementing the satisfying stretch of penetration. Jacob worked back and forth, massaging her inner muscles looser, his cock sinking deeper. His medial ring tugged on her entrance, and Clementine groaned when it forced its way inside her. Her tail whipped left and right, and she humped blindly into the bed. Her cock felt good rubbing between soft fabric and her belly. Her precum seeped stains into the linen, making her thin coat of fur slick and greasy with her arousal.

A little curse worked through Jacob as he forced himself deeper. The hungry asshole squeezed along his shaft, trying to wring him dry when he finally hilted her. Clementine savored the warmth of his fat nuts resting against her thighs, Jacob's sweaty, musky weight pressing her into the bed. A shiver ran down her spine. By the end of this her big brother's scent would be all over her. When they lived together, Clementine would go out after fucking her brother, daring anyone to recognize the smell of his sex on her, marking her. That little thrill that some might know what she got into with her sibling always made her cock jerk, as it did now, soaking the bed and her belly. Pressed deeper into the mattress as Jacob settled his weight on top of her, nipping one of her oval ears.

"You're so tight, baby girl. Bet you've not had a stud open you up in a while, huh?"

"N-no. I've been so... so pent up without you." Clementine reached behind her and grabbed the back of his neck. "Please, Jacob."

"Please what?"

"Fuck your slutty little sister into this bed," Clementine said while she clenched on his shaft and pressed her ass into his crotch, gyrating it to entice him. "Remind her why she needs you and only you."

"That's right, slut. I own your ass, don't I?"

"Yes! Jacob please fuck me, please put me in my place."

"Mmm," Jacob rumbled before planting a deep kiss on her shoulder. He loudly breathed in her scent, tasting the sweetness of her sweat, the slight sour tinge to her musk, the pervading, earthy rut of their sex. "I'm going to enjoy breeding your ass."

Even when she still identified as a boy, Clementine relished indulging in her breeding kink with Jacob. It deepened the taboo of this. She moaned into the pillow, Jacob's blunt teeth clamping down on her shoulder as he started to rut her. He kept their bodies close: his gut pressing into the curve of her back, the heat of his thighs hugging her legs, his musky sweat sharpening with a fresh sheen as he pounded her rear. Each tug out hauled his meat until only half remained, then the punge, like a lesser male's fist punching its way back inside her, medial ring caving in her rim. The twitch of his balls, throb of his glans as each sweaty plap was met with a fresh spray of precum inside her guts.

Clementine practically went limp under her brother, loudly wailing her pleasure into the mattress. Each pump of his hips rocked her body forward and back; her fat equine-like cock rubbed into the sheets, a growing stain of her arousal soiling the bedding. Each pound of his hips grew the tension in her core. Her glans flushed to her full flare, making them even more sensitive to the fabric she frotted. The sharpness of her cries collapsed into muddled, groaning, Clementine's body drawing tight, walls clamped down on the meat still pounding her open.

And Jacob released her ear to growl, "That's it, cum bitch."

She did, babbling her big brother's name as his motions became slower, more ragged. She felt his cock pull further out, slamming back in hard and lighting her body up in a plateau of pleasure as he churned up her insides, his girth pressing against every sensitive fold of her walls. Each tingling itch, each pound of pressure, fullness, her cock spraying the bed, squirting her load into the mattress. Soiling it with the musky, sweetness of her cum. Pummeled out of her by Jacob's flaring cock, his grunts growing ragged.

"Go-gonna fucking mark you... claim you..."

"Do it, big brother," Clementine breathed, clenching hard when Jacob next hilted. He snarled and collapsed on top her, his balls drawn tight against her butt and thighs.

"Fuck... Clem..." Jacob whispered before burying his muzzle into her back, muffling his groan as he came. Clementine felt that seed shoot through his shaft like a second pulse, before liquid heat began pouring into her. Already past the point of her first orgasm, Clementine sighed, reaching behind her to stroke his neck.

"That's it, Jacob, knock your sister up."

"God," Jacob cursed as his balls twitched. A fresh, thick rope poured into her, each jerk and pump of his cock felt all through Clementine. He panted and just held onto her, pressing his hips flat, letting his seed drain inside his little sister. With a gasp, one final push of his semen filled her, leaving her ass feeling slick and lubed and warmed with her brother's musky heat.

He kissed the back of her neck and whispered, "I swear I didn't have a breeding kink before you. I don't even like kids."

"Hehe, tell you what," Clementine took his hand and guided it to her muzzle, kissing across the rough, worn knuckles, "You let me fuck you and I'll make sure you don't knock me up this trip."

Jacob snorted and Clementine sensed him rolling his eyes. "You're going to fuck me anyways, aren't you?"

"You love it," Clementine teased. Hormone therapy had done interesting things to her libido: a woman's refractory period with far more stamina when all the right things worked her up. Her big brother being all those things. She always left Jacob and his husband Poe worn out by the end of her visits. She just couldn't help herself when both of them smelled so good. Even now, the scent of their rut, sweat, and cum heavy in the air had her cock aching, ready to go again.

"I'm going to need some prep before you do anything to me. I wasn't exactly expecting to be wet and ready this afternoon."

She gave his middle finger an affectionate little bite. "That's fine. It's no fun if I don't get to make you melt under me."

"Lord, Clem, you're a monster, you know that?"

"When you smell this good, big brother, how can I be anything else?"