Their parents were out of the house... finally. Marcus let out a deep relaxed sigh as the family car pulled away, leaving the 15 year old fox alone in the house with Jay, his 11 year old brother. He loved his parents, he really did, but it got so exhausting being around them all the time when it meant he had to be so pent up.

Mom and dad were both away all night for their anniversary, however, and were spending the night away at a fancy hotel as well, so that meant the boy’s could let loose.

"Fuck yeah!" Jay cheered, immediately starting to free himself of his clothes, clearly sharing the sentiment. Marcus grinned as he watched Jay strip down to his bare fur before tossing himself on the couch, the older brother's eyes hungrily watching Jay's exposed body.

Jay's cream-colored stomach and sides were contrasted by the burnt orange across much of the rest of his body. He was small, slender, his arms and legs thin, his feet and paws dainty… and between his legs was the cutest, tightest little pussy, the lips pink and plump, his large-for-his-age clit visible.

Marcus felt his own crotch heating up at the sight, and he knew his own panties were going to be soaked in no time. The two boys were both born intersex, male in all regards but one, and while they had grown up with a very close relationship, it had recently gotten even closer. It had started with just masturbation, the two brothers touching themselves side by side. Jay had been the first one to ask to masturbate together a year ago, his blossoming puberty hormones making him confused and needy, but not quite sure what to do.

At the time, Marcus had agreed, seeing the desperate need for relief and guidance in his younger brother. But as the little cuntboy was writhing naked beside him, moaning and whimpering and cumming from the pleasure he was giving himself, that Marcus was teaching him, the older brother realized how badly he wanted him.

He continued to teach Jay how to masturbate, guiding his paws to touch and rub the right spots, the little one learning how to bring himself to orgasm after orgasm, his body becoming a panting, shaking mess of ecstasy. Then they started to touch eachother, using their fingers and tongues on eachother, exploring their bodies together.

Soon, the boys' parents caught on to the incestuous affair, finding the two brothers sleeping together on the couch in a puddle of their combined juices after a too-intense session, their clothes strewn across the room. After a brief period of being angry,  and disappointed, they came to accept that their sons were going to find a way to do this anyway, and it wasn't like there was risk of pregnancy since both of them lacked male bits. They two of them would likely find it hard to get partners growing up being sexually atypical, and growing boys have needs.

They all settled on a slightly uneasy compromise of allowing the two to play around whenever they could keep it quiet and private, with free reign to do as they pleased whenever their parents were gone. Their mom and dad still didn’t necessarily like the idea, but knew that it was better than the alternative of the two of them being unsafe with strangers.

And now here they were, Jay sprawled naked on the couch, his body still developing with the awkwardness of an 11 year old but starting to lewdly rub his slit like a pornstar, trying to entice his big brother to play with him.

Marcus couldn't take his eyes off of the sight. It wasn't that he wasn't eager to join, but just that the sight of his gorgeous little brother was almost hypnotic, the way he could see the wetness leaking out of his brother’s cunny as his little fingers teased himself...

"Come on, Marky, I know you wanna..." Jay whimpered, his eyes half-lidded, his face flushed. Marcus chuckled softly, standing up and slowly moving closer.

"I think you're right about that." he purred, leaning in over the smaller cuntboy, kissing him softly. He could feel his own panties becoming wetter by the second, his sex throbbing hard in its confines.

The older boy's paws wandered down his brother's body, gently caressing his sides and stomach, tracing his hips. The soft whimpery moans Jay was making was driving him crazy, and the fox boy knew he was going to have him cumming more times than he could count today.

"Please...!" Jay gasped, bucking his hips up as his fingers rubbed and pressed his clitty, teasing his pussy lips open.

"Please what?" Marcus asked, his paws teasing along his thighs.

"Pleeeeease touch me, Marky, I'm gonna die...!"

Marcus let out a low chuckle, kissing his brother again. "Such a dramatic little boy, aren't you?"

"Yeah, whatever, please...?" The older fox boy nodded, slowly rubbing the tips of his fingers up and down his brother's slit, letting the juices coat his fingers. His other paw gently moved to hold one of Jay's hands, pulling it up and gently licking his brother's sweet, salty juices off of his digits, his eyes half-lidded in pleasure as his tongue worked along the length of each finger.

The younger fox boy gasped softly, his back arching slightly. His hips wiggled, grinding against his brother's fingers.

"Mmfh... more, please Marky..." he whimpered. Marcus smiled and slowly pushed two of his fingers into his little brother's sex, slowly fingering him as he felt the velvety walls grip around his fingers.

"Oh gods, oh gods...! Mmnh, Marky, I love your paws so much..." Jay squeaked, his tail starting to wag behind him.

"And I love you, my little slutty boy." Marcus chuckled, leaning down and kissing his brother's forehead.

The older boy leaned down further, trailing kisses and licks along Jay's tummy and sides, his paw gently groping his brother's flat chest, rubbing the pad of his thumb over his nipple.

"M-Marky, ohhh...!" Jay cried out softly, his head tilting back. Marcus smiled, continuing to kiss along his brother's tummy and chest, his free paw now starting to stroke his own pussy through his panties, his hand buried in his pants.

He couldn't get enough of his brother's reactions. The way he moaned and whimpered and gasped, the way his body tensed and squirmed, the way his tail wagged as his body reacted to every little bit of attention...

The older fox boy couldn't wait to have his little brother crying out his name while he was taken by an intense orgasm. He kissed and nibbled his way down, slowly sliding his fingers out of his little brother, earning a disappointed whine.

"Awwwe, why?"

"Be patient baby bro, I gotta get out of these clothes or they are gonna get drenched" Marcus chuckled, leaning back up to kiss the younger boy's forehead.

Jay giggled softly, nodding. "M'kay..."

Marcus slowly pulled away, his body burning with the need for his little brother's touch. He made a little show of stripping, swaying his hips as he slowly stripped free of his shirt, his bare chest and abs on display for his brother.

He wasn't exactly built, but his body was athletic. He was a swimmer so he was lean and well-toned. The 15 year old was proud of his body, and his cocky grin at his little brother's reaction showed it.

"Like what you see, little man?"

Jay's mouth was practically watering as he saw his brother's upper body alone,  and his cocky smile just made him feel hotter, his eyes fixated on his brother's crotch.

"Yeah... get your pants off and get your pussy out, bro..." Jay muttered, biting his lip. 

"You're the boss, little bro." He brought his hands to his waistband and took an exaggeratedly long time sliding out of his jeans, showing off his soaked panties by pulling them up higher for a moment, giving himself a cameltoe.

Jay was squirming impatiently, his hips wriggling, his paws rubbing his thighs, his eyes glued to his brother's crotch. Finally, after what seemed like an eternity of teasing, the older fox boy's panties dropped, leaving his dripping pussy on display.

"Fuck, you look so good..." Jay breathed, his eyes wide. Marcus just grinned. He had taught his younger brother all the naughty words he knew, even taught him how to talk sexy when they played around. He was actually quite good, having mostly gotten over the clumsy overuse  that young boys often have when they first find a place they can curse freely.

"Thanks, little man. But, you know, you've got a pretty good body too."

The older fox boy knelt down, running his paws down Jay's body, feeling the way he squirmed under his touch. Jay's skin was so smooth, so soft, and his body was so slim and lithe...

"M-Marky..." the little fox boy gasped, his legs spreading as his big brother's paws caressed his body.

Marcus' heart was racing, his body burning. He slowly positioned himself between his little brother's legs, leaning in and planting kisses on his stomach and hips, working his way down to Jay's cunny.

He was almost drunk on his brother's scent, the smell of his arousal, the scent of a young male. He was starting to develop the musky scent of a mature fox but there was still a lingering sweet-and-sour boyishness to it that drove Marcus wild.

His lips met his brother's sex, his tongue slowly licking up his slit, Jay's hips trembling as his big brothers tongue slowly lapped up his juices, the older fox boy's paws resting on his thighs.

"O-oh my god, oh my god, Marky..." Jay gasped, his hips starting to grind his pussy against his brother's muzzle, his paws reaching down to grab the back of his head.

"Mmffhh, fuck, I love your pussy, Jay..." Marcus growled, his paws massaging his brother's thighs as he eagerly licked and kissed his cunny, tasting his sweet juices. The older boy sent one of his paws down to rub at his own clit, his eyes fluttering as he felt himself becoming more and more turned on.

The older boy couldn't stop licking his brother's delicious cunt, his tongue working up and down his slit, pressing deeper to tease at his inner walls. His paws groped and rubbed his thighs and hips, his fingers kneading into the soft flesh, feeling the way his body was squirming and shuddering from his brother's oral attention.

"F-fuck, Marky, it feels so good, your tongue feels so good... t-tongue fuck me already big bro..." Jay whimpered, his head tilting back, his toes curling.

Marcus moaned, his tail wagging hard behind him, his eyes half-lidded with pleasure and desire as he pressed his muzzle harder into his brother's sex, his long canine tongue delving deep into Jay's pussy, working inside him.

"Mmmfhh, mmff, fuck, Marky, yes...! Yes, Marky, y-you're such a good big brother, o-oh, fuck, you make me feel so good...!" Jay was crying out, his voice cracking, his words slurred with ecstasy.

Marcus loved making his brother into a quivering, gasping mess, loved the way his voice would rise and crack, the way his body would shake, the way his breath would hitch. The 15 year old felt the needy ache between his legs, the burning, desperate need for release, and he could tell Jay was getting close too.

The older boy could feel Jay's legs shaking and trembling around his head, the way his whole body was starting to tense, the way his breathing was getting faster and faster, more and more desperate as he pressed forward into Marcus’s muzzle, body begging to be finished.

"Cum for me, little man, cum for me..." Marcus panted, his voice muffled by his little brother's sex.

"Ohhh, f-fuck, Marky...!" Jay squeaked, his voice cracking, his words trailing off into a high pitched whine, his whole body tensing up, his legs clamping around the older boy's head.

"M-Maaaaaarkyyyyy!" Jay wailed, his back arching, his head tilted back. His body trembled, his pussy squirting a stream of juices into Marcus’s mouth as his orgasm rolled through his body, his tail thwacking against the couch cushions as his toes curled.

Marcus groaned softly, lapping up his little brother's juices as his own body shook, his fingers rubbing his clit fast and hard, the stimulation bringing him to his own climax. The older boy moaned loudly into his little brother's cunt, his legs shaking.

The older fox boy could hardly hear anything, his ears ringing as his whole body quaked, the pleasure rolling through him in waves.

"F-fuck, fuck, fuck, ohhh fuck..." Marcus moaned, his voice low and hoarse.

"Ohhh, bro..." Jay sighed, his body slowly relaxing, his hips still twitching and shuddering.

Jay was smiling wide, his cheeks flushed, his fur sticking to his skin. He looked so cute, Marcus couldn't help but chuckle.

"Feeling good, baby bro?" the older boy purred, slowly crawling up over Jay's small form, wrapping him in his arms.

"Y-yeah... thanks, Marky, I love you..." Jay whispered. Marcus couldn't help but feel his heart swell.

"I love you too, little bro. You want some more already?"

Jay grinned and nodded.

"Yeah, yeah I do... mmm, I wanna… wanna hump our pussies together..." Jay said, his eyes glimmering with mischief.

"Well, how can I say no to that?" the older boy chuckled, slowly moving to sit on the couch, guiding his brother into a straddle, positioning their crotches against each other, both boys letting out soft gasps and moans as they felt the heat of their bodies.

Each felt the twitching aftershocks of the others orgasms as they pressed themselves against eachother, wet sounds filling the room as their juices mingled, both boys shuddering and moaning as their sensitive clits rubbed together.

After a little bit of teasing eachother, Jay looked like he had been shocked and looked up at his big brother.

"Um! Wait, I just remembered something!”

The older boy was confused, but his brother quickly slid off his lap and Marcus watched him run to the stairs.

"What's up? You okay, little man?"

"Yeah! But stay right there, I got... um... a surprise." Jay called down.

Marcus was curious and decided to play along, laying back and waiting, his paws lazily rubbing his thighs and folds. He wondered what his little brother was doing, and couldn't help but get a little aroused at the possibilities.

A few minutes later, Marcus heard the padding footsteps of his brother at the top of the stairs and smiled.

"What's my baby boy up to...?"

"Shh, you'll see. Lay still and close your eyes!"

Marcus let out a slightly nervous laugh, but nodded and closed his eyes. He heard what sounded like metal clinking together and was tempted to just peak a bit, but he was a trustworthy big bro.

"Okay, you can open your eyes now!" Jay chirped.

Marcus did and gasped softly. His 11 year old little brother was standing over him, a harness buckled around his hips with a thick double ended knotted dildo in his hand, obviously meant to attach to the mount on the front of the obvious strap-on harness.

"J-jay, holy shit, is this...?"

"Yep! When you and mom and dad went to that dentist appointment the other day I... um... found their toy box. I think mom uses it on dad.” Jay chuckled at the thought of his father bent over the bed, before continuing bashfully, “And well, I was thinking... I could actually fuck you, you know, like a real boy." Jay's cheeks were bright red and he was smiling shyly, his ears flattened in embarrassment.

"I would love that, baby boy, I would love it so much. But you know you are a real boy, so am I. And... what if mom and dad find out? I know for a fact they won't like us using their sex toys."

Jay smiled wide and hugged his brother tightly, nuzzling into him. "I'll put everything back the way it was, don't worry, I've got it all figured out! I even took a picture of the box before I took it out so I get it right, see?"

Jay held up his phone to show the photo, showing a box full of other toys that looked fun to play with, and the older boy nodded.

"Wow, good job, little bro, you're such a smart boy."

Jay giggled and wiggled a bit in his big brother's arms. "Mhm, I'm a smarty pants, now can I fuck your pussy? Pretty please? I wanna know what it’s like to have a penis.”

"I'd love that, little man. First, we gotta get one side of that thick toy in you though. I’ll help you get it on the harness and work it into you." Marcus smiled and stroked his brother's cheek gently, kissing him softly.

"Okay, Marky..." Jay nodded. "You're really sure it’ll fit though, right? I could just, like, hold it between my thighs-"

"Absolutely, bro. Don't worry."

Marcus got off the couch and sat on the floor, patting his lap. Jay smiled and walked over, slowly kneeling down, sitting his rump on his brother's knees. Marcus loosened the strap on the harness and socketed the double ended dildo in the middle of the mount and positioned one end at his little brother's glistening hole.

"Are you ready, Jay? Are you ready for me to put this in you?" the older boy asked, kissing the younger’s forehead.

"Yeah... please, Marky..." Jay nodded, biting his lip, his hips wriggling.

"Alright, let's get it inside you..."

Slowly, the older fox boy eased the toy inside his little brother's tight hole, watching the way his brother's eyes widened and he let out a gasp.

"O-oh, oh my god, Marky, it's so thick already...!" Jay moaned, his back arching, his toes curling.

"I know, it's really stretching your pussy out, isn't it baby boy? Does it hurt?" Marcus asked, his free hand slowly rubbing Jay's back soothingly.

"Mmmf, a-a little bit... but keep going, it also feels really good... I wanna wear it and fuck you, big bro..." Jay murmured, his voice shaky and unsteady, but his determination showing.

Marcus slowly pushed the toy in deeper, watching the way his little brother squirmed, his mouth open as he gasped and panted.

Finally, the dildo was almost fully inserted in his little brother, all that was left was the knot. Jay was quivering and shaking like he had run a marathon, his chest heaving, his breath fast and uneven.

"F-fuck, Marky, it feels so full, a-and the knot... it's so big, i-it's like as big as your fist... do you... can I really take it? Ahhh~"

"Shh, yes, you can, its not that big. You can do it baby bro, just breathe, okay? I'll put it in slowly, and then you can fuck me with it, okay? Can you be a brave boy for me?" the older fox boy soothed, hugging his little brother close, holding him tenderly.

"Y-yeah... I'll try..." Jay mumbled, nuzzling his big brother's neck.

"Alright, just relax and let me put it in you, little man."

Marcus started slowly easing the knot into his little brother's hole, feeling the way his body spasmed against the large intrusion, the way he squirmed in his lap. Jay's arms wrapped around his big brother's neck, squeezing tight.

"Oh my god, oh my god, f-fuck, ohhh, Marky, i-it hurts..." Jay whimpered, trembling and quivering, his claws digging into his big brother's shoulders.

“I know, I know, it's so big, so thick... but you can take it, Jay, you're so strong, you're so good. Just relax and breathe, okay?” the older boy murmured, holding his little brother close, slowly pushing the knot deeper.
"O-okay... o-okay, Marky, I... I.... hnnngh!" Jay did his best to relax, but his body took over and forced him to bear down against the huge mass of silicone trying to gain entry. However, in trying to push it out, he opened up enough that in one last push, the knot fully seated itself inside him. The slight give in the silicone enough to keep it from truly injuring him, but it definitely still hurt… and hit all the right spots. Jay gasped sharply, his voice hitching, his eyes wide.

"Ohhhh, fuck, o-oh my god, Marky, oh my god, I-I can't... I'm cumming... I'm... ahhhhhh!" Jay's entire body stiffened, his claws digging deeper into the older boy's skin, his back arching sharply.

He cried out, a high, keening wail of pure pleasure, his eyes rolling back in his head. He shook, his mouth hanging open, his tongue lolling, his whole body shaking.

The relief of finally getting the knot in mixed with the massive amount of pressure now inside him sent the 11 year old boy over the edge in an instant, and he was currently riding out the most intense orgasm of his young life.

Marcus watched in awe as his little brother squirted, his juices squirting out from around the knot, the older boy's lap soaked. He didn't think Jay was physically capable of cumming this hard, but he held him close, whispering words of praise and encouragement, rubbing his back.

After a few minutes, Jay slowly started to come back to reality, his body shaking and trembling, his breath coming in ragged gasps.

"Ohhhh, f-fuck, oh fuck, M-Marky... I d-did it..." Jay whimpered, clinging desperately to his big brother.

"Yes, you did. Look at you, you took that whole knot, baby boy, I'm so proud of you, you did such a good job. Look down." And Jay did. He gasped at the image, because now that one half was inside him and the harness held the other half at the ready, for the first time in his life the little cuntboy was looking down at himself with what appeared to be an erection.

The boy giggled in spite of the massive knot stuffed inside his poor puffy cunny and reached down to touch the thick rubber shaft, shivering a bit.

"It's so hard, Marky... ohhh, when I jerk it... I feel it move in me... i-it's... I-I've never been more horny in my life, b-big bro..."

"I know, little bro, I can see. It looks amazing on you, and the best part is, now I get to feel how deep it goes inside me. Come on baby boy, do me." Marcus tightened the straps on the harness back up, got down on his hands and knees, and raised his tail, inviting his little bro in.

"You really mean it?" the boy whispered, getting on his knees behind his brother, his hands trembling as he took hold of the toy.

"Yes. Now put it in me. Breed me."

"O-okay..." Jay said cautiously, licking his lips and grabbing the dildo, lining the tip up with his brother's waiting hole. And he pushed.

The older fox boy shuddered and moaned softly as he felt the toy breach his hole, slowly slipping inside, his walls spreading around the thick toy. Being a bit older than his brother it didn't cause him any pain as much as discomfort. Both of them had used their fingers inside eachother so being filled with something wasn't foreign, but the size was a new sensation.

Marcus bit his lip, groaning softly, his ears flat, his tail trembling, his claws digging into the carpet. The feeling of the toy stretching him open, filling him up, was unlike anything he had ever experienced, and his body shuddered. No wonder Jay came from just the knot popping in, it must have been like a damn orgasm bomb going off if the shaft said anything.

Jay gasped as he felt the dildo slip deeper inside his big brother, shuddering and moaning softly. He could feel the resistance of the other boy's insides, the way his body squeezed the dildo, all through the half of the toy that was now inside him, and the young boy was starting to lose himself, his hips slowly rocking back and forth.

"Ohhh, oh fuck, Marky, I gotta... I gotta hump... it's so good..." Jay sighed, his eyes half lidded, his hips working the toy deeper and deeper inside his big brother, who moaned. Every push and pull was mirrored inside him, the part of the toy anchored in him rubbing deliciously over his g-spot.

"O-oh, yeah, that's it baby bro, fuck me, fuck me with your big dick, fuck me just like you wanted to..." Marcus moaned, pushing his hips back against his younger brothers thrusts, panting softly, drool dripping from his open mouth, his eyes rolling back in his head. “F-fill me, Jay, f-fill me with your pups…” Marcus encouraged, indulging on his little brother’s fantasy of having a big, throbbing cock, being able to breed him.

The next several minutes were nothing but lust filled moans and pants, all overplayed with the wet sound of the dildo working its way in and out of two hot, slick, juicy, desperate, eager, slutty holes, the two boys' voices growing in pitch and frequency.

"Ohhhh, I'm, I'm gonna... ahhh! Marky, I'm gonna cum again, I'm gonna cum, big bro, oh god, I'm gonna cum...!" Jay whined, his small hips working as fast as they could, the dildo being buried again and again inside his big brother, the other end pounding his own poor abused hole, his juices drenching his thighs, his clit swollen and throbbing.

"Fuck yeah, me too, baby boy, give me... give the knot! Knock me up!" the older boy panted, his voice cracking, his whole body rocking back and forth.

"I'm cumming! I'm cumming! Ohhhh, fuck, Marky! Take my pups!" Jay cried out, his small form tensing up as his second orgasm hit him hard, his claws digging into his big brother's skin, his cunny clamping down around the thick shaft inside him, and his hips slammed forward, the knot forcing its way into his brother's cunt.

Both of their orgasms were powerful, intense, and explosive, and the sounds they made were music to each other's ears. They were the only two people in the world from the pleasure they were sharing, and neither one would have it any other way.

As the last waves of orgasm washed over the two boys, Jay leaned forward, draping himself over his brother's back, nuzzling into him and practically purring.

With the force of his own orgasm making his legs and arms a shaking mess, Marcus fell forward, collapsing onto the floor, taking his little brother with him.

"Ahhhh, f-fuck... that was amazing..." Jay sighed. "I love you, big bro..."

"I... I love you too, baby boy." The older boy chuckled softly. "That was the best idea you've ever had, little man."

"Thank you for letting me, Marky... I can't wait to do it again.”

"Oh, I'm using it on you next, bro… No way am I not. But first... I think I need a nap. I... I don't think I can feel my legs!"

Jay giggled and kissed his brother's cheek, smiling.

"Alright, big bro, I'll pull out, but you gotta help me, I... um... don't think I can get up on my own either."

Marcus chuckled softly and nodded, the two brothers slowly maneuvering themselves until the knot popped free from the older boy, the dildo sliding out of his hole. After panting on the floor for a moment from exhaustion Marcus turned around and held his little brother, slowly and carefully pulling the toy out of his tight cunt, shuddering a bit as he watched the knot pop free with a push from Jay and a tug from him.

"Wow, Jay... look at how open your pussy is..."

Jay glanced down between his legs, whimpering from how used and sensitive his hole was. It was well and truly gaping from the large knot that was in him. Marcus’s was a bit open from his side of the toy, but the 11 year olds…

"O-oh, wow, it's... I didn't think I could stretch that much. It's a-awesome..."

"I can see all the way inside you, baby bro... you're all pink and shiny, and your clitty is all cute and swollen and red, and your lips are so puffy..." Marcus gently played with his brother’s gaping cunny as he teased him.

"Marky... i-it's embarrassing..." Jay whimpered, burying his face in his big brother's chest, batting his big brother’s hands away from his sore crotch.

"I know, and that's why it's hot. Now come on, let's go to my room and cuddle. I'm not done snuggling with my baby bro yet."

"Mhm..." Jay nodded, hugging his big brother and nuzzling him. "I wanna cuddle too..."

The two shakily made their way to Marcus's room, supporting eachother along the way. where they curled up on the bed, snuggling close and nuzzling each other, Jay purring happily, Marcus running his fingers through his little brother's fur, gently massaging him, kissing his head. Before they drifted off into an afterglow warmed nap Marcus set an alarm on his phone so even if they didn't get a chance to reverse the rolls later, at least they would have time to clean the toy and put it away so no one else could find it.

But that was a problem for later.

For now, the two brothers would rest, lovingly snuggled up together, blissfully content.