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As any normal day in the Zeuler household, the day began with the same old routine for Mr Landon Zeuler and his son Mark Zeuler, both of the doberman dogs would wake up at the crack of dawn and head out for a stimulating morning jog through the nearby park.

Both father and son enjoyed keeping their similarly well sculpted bodies fit with routine workouts and a healthy lifestyle. And their joint morning jog, which always happened under a tempered silence, measured breathing and paced speed. Like clockwork both of the hunky doberman studs were out the door before the sun could rise fully, and be back home right as the last morning mist evaporated, panting, and having worked up a nice sweat.

After some post-workout stretches and winding down, it was first come first serve to the bathroom for a refreshing shower. Whomever slacked behind would throw the dirty workout clothes in the washer and simply take to wait around stark naked and doing other chores until the other one was finished so they could clean up while the dobie who got the first shower could get breakfast started. Neither father or son thought it weird to see the other in the nude, as they were both just proud of showing off their well built bodies and treat the whole situation as if nothing was wrong. But after the shower they would at least get some well fitting underwear or jockstrap on.

Yes one could easily say that the Zeuler's have a good lifestyle and a good father-son relationship, especially since Mr. Zeuler having raised his son by himself have had quite a bit of trouble when Mark hit his teenage years. Back then he had been rather the rebellious boy, never listening to his father and getting in trouble in school or with his two cousins.

To ensure that his son would learn some discipline and burn off excess energy, Landon made his son tryout for the football team, where he surprisingly quickly and easy fell into line with the other teens and showed a great aptitude for the game. It didn't take long for the two of them to bond over their mutual love for exercise and Landon was more than pleased to actively partake in his son's training and getting to understand him more than he ever could have before.

Ever since Mark enrolled in Northridge College with a scholarship and placed under the esteemed football coach Richard Henderson however... Landon felt like there had been a wedge pushed between himself and his son. Sure they still worked out together when time permitted it, and Mark still treated him with respect. But things began to feel awkward after some time. He would have to go on morning jogs by himself when Mark said he felt sore, and he'd make jokes about "Your coach is really riding you hard eh?" after which Mark would disappear into his room, striking Landon as very odd. Or there would be sudden awkward silences if they bumped into each other to and from the showers with little to no clothing on. Which he considered odd since they've been pretty relaxed about seeing each other nude.

After a year or so attending Northridge, Mark's behaviour tended to shift towards more and more awkward situations, Mark excusing himself from workout due to being sore, and any free time he had was spent out partying with friends or staying locked up in his room.

Then, a fateful afternoon several months ago, when Landon came home from work at the construction company he owned, and he was heading to grab a shower when he passed Mark's room with the door slightly ajar, and he heard a moan.

His first instinct was to just move along swiftly and get to the shower before the ultimate awkward situation would befall him; walking in on his son masturbating.

But something held him back, just for a moment. And in that moment he heard something which would lead to so many more similar situations in the future as the one that's about to unfold right now.

In a mix between a moan and a whisper, one word that could only mean one thing. "Mhhh, coach..."

Landon's world suddenly stopped once he managed to process what he had heard. His son was fantasizing about his football coach while masturbating? That would mean... "Mark's gay?"

Any further thoughts on that was interrupted by another loud and incredibly lewd moan.

Before he knew it, Landon had crept up to the door to his son's room and was intently eavesdropping with his cropped dobie ears perked.

"Wait no, what am I doing. I can't listen in on my own son..." He gulped when he heard a slight shuffle and an even deeper, guttural groan of pleasure. "Masturbating..."

"Fffuck yeah coach... Your cock feels amazing..." Quiet like a whisper, but Landon heard it all perfectly from behind the open door.

Curiosity got the better of him at this point, and without thinking he gave the door a light nudge and peep inside between the centimetre wide gap.

Squatting on the floor, leaning back against his bed and supporting himself on it, was Mark, completely nude, with his ass sitting just at the tip of the biggest dildo Landon had ever seen in his life.

And as he watched in stunned silence, his son lowered himself down onto the dildo, taking the entire monstrosity down to the fat knot at the base.

After the shock wore off after seeing Mark repeat the movement with obviously practiced ease, before anything else, Landon remarked to himself with how impressed he was with his son's form during the squatting movements.

His impressive muscles bulged and flexed, his thick thighs bringing him up all the way to the top of the dildo and stopping at just the right moment. Then he'd rest there for a heartbeat before going back down, squeezing the monster dildo inside his remarkable ass.

Not once did he quiver or shake, even under the obvious pleasure he was feeling. No, Mark was as steady as ever like Landon had seen him during their workouts.

It was easy to tell that his son felt nothing but pleasure riding his ass on the dildo, since his own red rocket fully erect, bouncing in front of him as he went up and down on the dildo, painting the floor in front of him in white streaks from his dripping pre.

So lost in admiring his son fucking himself with the dildo, it took a while before Landon noticed his own shaft had begun awaken. By the time he had noticed he was already sporting a full red rocket in his pants.

"This can't be happening." He thought, reaching down with a paw to grope at his erection through his jeans. A small moan escaped his lips, but luckily it got drowned out by an even louder moan coming from his son's bedroom. Just as he looked back up and peeked in once again, Landon got the perfect view of Mark going down completely upon his dildo, knot and all. Throwing his head back in a howl of pleasure, clutching onto the bed tightly, and without even laying a paw on his own twitching cock, Mark's orgasm exploded. Painting the floor in his room his sticky white fluid.

Before Mark finished cumming, Landon decided he'd seen enough and hurried along to the shower he like he had originally decided to do before he got sidetracked. Even as he quickly got undressed and in under a cold shower, the dobie father's erection just wouldn't die down no matter what he did. The image of his son's muscles flexing, his deep moans resounding inside his head, and the thought of his thick juicy cock bouncing up and down...

As much as he'd like to pretend not to believe any of it, all of these thoughts about his own son turned him on harder than anything has ever done before. He should be disturbed or disgusted by the very thought, and yet his cock was still rigid hard. The last remaining option was to wrap his fingers around his throbbing shaft and start to stroke it.

It didn't take Landon much encouragement to get himself over the edge once he squeezed down on his fat knot, coming within a moments notice and painting the shower wall with his cum. As he watched the would-be brothers and sisters of Mark wash down the drain, Landon put his hands against the wall and let the water splash over his broad back and his sleek black fur. In thoughtful contemplation he considered what had just transpired, and what he had just done, and slowly, veery slowly, he came to a realisation.

He had just masturbated thinking about his son after watching his son ride a dildo, and found out that he liked it. The image of Mark's firm bubbly butt skillfully taking that massive canine dildo, and his thick manhood which very much resembled his own. Making him a very proud dad indeed.

A loud thudding on the bathroom door startled him and made him perk his cropped ears along with his tail nub both.

"Are you almost finished dad? I need to grab a shower as well." Mark shouted from the outside to make himself heard over the running shower.

"Y-Yes I'm almost done, I'll just be another minute." Quickly finishing off and a swift rub down with a towel to dry off as best he could before getting out of the bathroom and returning to his room as fast as he could to get dressed. The last thing he wanted right now was being seen by Mark, since he wasn't sure just how he would react coming eye to eye with his son after rubbing one out thinking about him.

The days that followed, Landon seemed to find himself in more and more situations that made things increasingly awkward between the two dobies. Landon repeatedly found himself staring at Mark's bubble butt whenever his back was turned against him, or getting glimpses of the sizeable bulge at the front. Or simply getting lost mindless admiring his well defined muscles during their workout.

To make things unintentionally worse for himself, one day when Mark was out of the house and having seen his son use his dildo a few more times, he did something that both scared him and aroused him beyond anything he's ever felt before. By sneaking into Mark's room and finding the same dildo, and use it himself.

Now, there had been a number of years since Landon had taken a cock of this size up under his nub, but that didn't stop the dobie father from trying.

With a copious amount of lube and a lot of pushing the thick dildo in and out of his tight tailhole inch by inch several times. And over the course of a few weeks of additional training for Landon, he had finally trained his tailhole enough that he could take all of dildo except for the bulbous knot at the base.

While Landon had been getting in some private practice during the times Mark was out of the house, it didn't go unnoticed by the dobie son that something was amiss that whenever he'd come home and find his father snoozing on the couch or taking a nap in his bed, that he'd also find that the dildo coach Henderson had given him was not always in the exact same spot that he had left it in. The more he used it, (which was fairly often whenever he couldn't get the real deal), and the more times his coach railed his ass, the more attached to the gifted dildo he became, and would start to notice if it had been shifted only slightly when he went to use it.

While he suspected his dad had been using his dildo whenever he wasn't home, as he was the only suspect who had access to his room, he couldn't figure out why his supposedly straight, manly man dad would use it in the first place.

And for some reason, he didn't seem to mind it that his dad and he was sharing the same dildo. Somehow the idea that the dildo replica of his coach's thick manhood was satisfying both doberman father and son, was both amusing and sexy.

Mark hadn't ever thought this way about his real... no, his biological daddy before. While yes, he got off hard by calling his coach daddy whenever they fucked, but it had always been a thing between the two of them. To him coach Henderson was his real daddy, and Landon was his father and dad. He didn't care what others would think about this way of thinking.

But now his mind was broadening, and he began to see his dad in a new light. He had always admired his dad for the workout he puts himself through to have the peak masculine body he has today, but only now is Mark beginning to really appreciate every muscle, every inch of silky black & tan fur that shone with his good health despite his age.

And his eyes began to wander as the weeks went by. Catching glimpses of a mighty fine bulge at the front of his dad's pants or jockstrap, or an mouths drooling view of his perfect bubble butt.

The doberman dad had an ass very much like his son, perfectly round mounds of sleek fur and bouncy firmness, Landon was more filled out than Mark, and had slightly softer buns than Mark's youthful, well trained glutes.

Not that Mark had any actual proof of his dad using his dildo, but with all of the football practice and college work, (and plenty of time spent in coach Henderson's office). He simply didn't have any time to investigate the matter much further.

Until.

After coming home a friday late in the evening, after a rigorous practice session with the team, Mark kicked off his shoes after closing the door. He grumbled a little under his breath as he shrugged off his Letterman jacket. A significant bulge in the front of his jeans was a result that the special coaching he had hoped for today was postponed as coach Henderson had been called by the dean for one reason or another. And it didn't help the matter that the big black wolf had pulled him into the broom closet after getting out from the dressing room to practically molest him. Groping his ass cheeks through his jeans, nuzzling into the still damp fur in his neck and grinding his bulge against his sheath. Which of course made the doberman grow instantly rock hard and panting, becoming like putty in the wolf's large hands, whining into the wolf's chest as a paw squeezed the outline of his red rocket. "To make it easier to think of the real me when you get home and use your present." Henderson had told him after a sloppy kiss. Before the coach had suddenly left just as sudden as he had appeared, leaving Mark alone in the closet, with a raging erection and wagging up a storm.

But now he was home, after heroically travelling on the bus with a stiffness in his pants that just didn't want to die down. It had been hard enough getting home as it was, with his mind buzzing with images of him and his coach fucking like wild beasts. And he could still practically feel a burning mark of his coach's burly paw squeezing down on his bubbly rump cheek, even though it's been at least half an hour since then.

Making his way to his room, Mark went straight for the shoebox under his bed and pulled it out. To his disappointment, his dildo was gone. But he knew exactly who had it. Getting up from the kneeling position he had been in, he left his room and cautiously approached his dad's room, which he had left half open. A low, rumbling grunt told the dobie jock that his dad was indeed using his dildo, and that he hadn't expected him to come home this early, else he'd returned the toy to its rightful place.

Mark paused and listened for a while, his ears perked as he heard the lewd grunts and moans of his dad, along with the bed shifting as he moved. He contemplated just barging in on his dad and catch him in the act. But he had no idea how well his dad would react to him catching him using his son's dildo on himself.

But just as he decided against it and turned to leave, he heard it.

"Mrrhh, Mark, give it to daddy." Followed by a deep rumbling growl, a growl which almost sounded like Coach Henderson trademark growl.

"No way. Dad is actually using my dildo and... imagining me fucking him?" Mark's breathing sped up, and he whipped around to stare at the half open door. Slowly he crept up to it, and after a brief pause of hesitation, he peeked inside.

And there he was, Mark's father, a man's man who had at one point slept with a woman and made him. Now the muscular doberman father was sitting on his knees on his bed, naked, holding onto the headboard of his bed, with his meaty, bubbly ass in direct view from the door. Nub perked up and waggling, and the mold-replica of Richard Henderson's fat knotted cock going balls deep inside his spread and puffy tailhole. Only the knot remained outside and kissing that battered, puffy ring of muscle.

Before he knew what he was even doing, Mark had stepped inside the room quietly and stepped up to the foot of his dad's bed. Reaching out with a paw, he'd grab hold of and squeeze Landon's tail nub. A gasp, a moan, and a bark all at once came from the surprised doberman father, and just as he turned his head to look over his shoulder and exclaim; "Mark!" His son already squeezed down again on his nub, making him involuntarily arch his back and roll his hips, tightening his grip on the dildo with his ass, and exhaling a low moan.

"I'm home early, daddy. Did you miss your son?" Mark said with a twisted grin, holding his dad's nub hostage with one hand, and the other moved up along his broad, muscular back.

"M-Mark, this isn't... you..." But whatever else Landon was going to say was left in another surprise bark as his son grabbed him by the scruff of his neck and pulled his head back until his back arched further and further until he was forced to fall onto his back. With the dildo pushing against his prostate, and being overwhelmed in surprise that his son had caught him with it, Landon didn't get a chance to protest as Mark climbed onto the bed with him and swung a leg over his head. Placing one knee near each armpit of his dad, Mark had efficiently pinned down the older doberman by placing his jeans-clad bubble butt right on his muzzle.

With his father on his back, and him pinning him down his arms with his knees and legs, and his well rounded, firm rump pushing his face down, gave Mark a perfect view of his dad's fully erect cock standing tall before him. It was much like his own, a dark red rocket at about 9 inches, but a fair bit thicker than his.

"Not a bad dick that you got there dad. Do you stroke it when you think of me fucking you, or do you get off by just riding my dildo imagining it's me?" Reaching forward, Mark wraps a hand around his dad's shaft, hearing an audible gasp of surprise from underneath him.

"M-Mark wait, I c-can..." Landon begun to raise his arms up in a meek attempt at pushing his son of him, but all he really managed to do was get his paws on Mark's clothes rump.

"Oh raunchy aren't you? To think my old man was this perverse." Giving his dad's cock a couple of slow strokes, he'd enjoy watching a few pearly droplets of pre escape from the pointed tip. Still pushing his ass down on Landon's face, burying him against his bubble butt.

"You're bigger and stronger than me dad. But you haven't thrown me off yet and I'm barely keeping you down. You must really be wanting this." Mark said with a playful tone as he gave his dad's knot a soft squeeze.

Before Landon could answer, Mark continued. "I know that you've been using my dildo for a while, and I know that you think about me when you use it. I know that you want this, so when I climb off, I'll start to strip. If you don't move and stay where you are, I can show you just what kind of man I've grown up to be. Or you can leave and we'll never speak of this again, alright?"

Landon let his arms fall back onto the bed, and as Mark climbed off him, he took a deep breath of fresh air as it had been rather suffocated having his son's clothes rump pushing down on him.

Mark got undressed in record time. Even the jockstrap came off, which he usually kept on when he was with his coach. When he turned to look at the bed, his dad was still there. Laying on his back, arms spread out and his legs kept spread as well. He didn't seem nervous, but a smudge of uncertainty was on his expression, and he turned to look at his son when he climbed back into his bed.

For a moment they just looked each other in the eyes, both doberman father and son, completely naked and with raging erections, next to one another in the same bed.

Leaning in slowly, Mark gave his dad an affectionate lick on his cheek before he whispered into his ear. "Stay still daddy, let me show you how it's done." Getting up on his knees, Mark would once again straddle his dad's face, this time unhindered by any clothing, he'd get his rather-recently showered bubble butt over Landon's face. Bringing his plump taint and caramel coloured balls to rest over his dad's nose.

Bending forward, Mark wraps a paw around his dad's length, stroking it while he brings his muzzle down to give the dark red shaft a long lick with his tongue. Much to his satisfaction, he heard a loud, deep and rumbling groan of pleasure which heavily reminded him of coach Henderson, and he could feel his dad's hot breath spilling over his balls, taint and tailhole. Then he himself stopped a moan when he felt the mature, rich taste of his father's shaft, like a fine wine he tasted exquisite. And yet again Mark was reminded of his coach's unique heavy taste. Giving Landon's dick another long lick.

"Mhh daddy, you taste so good." Mark teased, and began to lap away at the thick dark red canine shaft standing tall in front of his nose. Using all the skills he had acquired from his coach, the dobie soon rolled his flat doggie tongue around his dad's girth.

Landon squirmed underneath his son, apparently struggling against showing any signs of enjoying himself at all. But that became increasingly harder with the tongue wrapping itself around his cock and his view obstructed by his son's plump balls and bubble butt. And his nose being assaulted by an exquisite young and virile sort of musky scent, mixed with a faint traces of the soap that Mark had used in the shower after practice. A scent he recognised as how Mark usually smelled whenever he grabbed a shower after their workout sessions. But now it was intense and his nose kept brushing against his son's caramel coloured, palm-filling orbs.

Something inside Landon would slowly come to a decision. As Mark spent a rough five minutes licking on his cock like a lolly, the doberman dad surprised his son by reaching up with his paws and grabbing hold of his son's well rounded, protruding mounds of caramel furred buns. Earning a low gasp of surprise from Mark who momentarily stopped assaulting his dad's cock with his tongue. Mark's own cock twitches as his ass was groped firmly by his father, dribbling pre under Landon's chin and onto his pecs, as the buttslut in him reacted to having his ass squeezed by a pair of strong paws.

"You've been doing good work with your squats Mark." Landon sounded much more sure of himself this time, finally allowing himself to appreciate his son's hard work. In response to the compliment Mark waggled his rear, and dragged his heavy nuts over his dad's nose.

"You can thank Coach Henderson for making me work my ass off." Mark said with a chuckle. Opening his maw wide, Mark suppressed a groan as his dad squeezed his ass again as he lowered his muzzle and took his father's thick cock into his mouth and closed his lips around it. Immediately he began to bob his head up and down along the thick red length, sucking and slurping hungrily on it. The more he sucked the more his dad groaned and squeezed his rump, which in turn only made him more eager to double his efforts sucking him off.

For a while Landon lied back on the bed, groping and squeezing down on Mark's ass during the time he treated him to a blowjob like he's never been treated before. This was nothing like his college days where he gave and received a fair amount of blowjobs himself. Thinking about it, Mark sure had some incredible skill with that mouth and tongue of his. That can't be something that his coach had taught him, was it? He easily took every single inch of his manhood into his maw, even as the tapered tip poked at the back of his throat, Mark skillfully relaxed his throat and let the thick shaft slide down it. Once his lips come to rest upon the bulbous knot, kissing it affectionately, he was deepthroating him with little to no effort. Slurping wetly on his father's cock, Mark moved one of his paws to grasp and gently squeeze Landon's incredible bouncy balls. As he did so, he was rewarded by having his ass squeezed in response to him laying claim to his dad's family jewels. The cock in his mouth and the balls in his hands was what had given him life. And now he was eager to take what was rightfully his.

Suddenly Mark let Landon's dick drop from his maw and he sat back up on his knees, bringing his ass down once again on his dad's face. Panting slightly and letting his dad get a facefull of his ass before making his next move.

"Alright, time for the next step. Let's see if this old dog knows any tricks." Mark slapped Landon on his thigh as he rose up on his knees and climbed off his dad once again. "Roll over." He said. Grinning at the grumpy expression on his dad's face.

Nevertheless, Landon rolled over to lay on his stomach, groaning slightly as the dildo shifted inside his tailhole. His nub tail was perked high over his meaty bubble butt, and as Mark moved over to kneel between his dad's spread legs, he got a perfect view of the red base of the dildo and the fat knot being kissed by Landon's puffy ring of muscle. Landon's tailhole was truly stretched wide by the thick dildo replica of Richard Henderson, even if he couldn't take the knot yet.

Mark felt that he didn't need to tell his dad just yet, that the dildo he had shoved up his ass was a mold of his coach's cock. Reaching out and grabbing the base of the dildo, he made his dad moan deeply as he began to tug on it and pull it out slowly.

Once he had extracted the toy from his dad's tightly clenching ass, he was pleased to see that the excessive use of the dildo had left Landon's stretched tailhole gaping slightly. And he couldn't resist pushing the fat dildo back inside with a lewd squelching sound as the liberal amount of lube that Landon had applied to the dildo was now coating his insides.

Landon's ass clenched down tightly around the dildo as it pushes deep inside him. His magnificent creamy caramel furred glutes rippled with the use of his marvelous muscle control. Mark was unable to resist moving his free hand to stroke, rub, squeeze and grope that marvellous ass which belonged to his dad. He almost forgot what he was originally planning to do as he pulled the dildo back out all of the way and watched his dad raise his plump ass up and hear him moan and groan as he pushed the thick, slick toy back inside all the way. It was amazing watching the pointed cocktip of his coaches dildo cock easily enter the dilated tailhole and slide inside with very little effort. The tailhole stretched out as the dildo gained thickness as it pushed deeper inside, and when Landon flexed his muscles he almost sucked the entire cock into his ass with his muscles alone

"Damn dad, you're a more skilled buttslut than I am. And that's saying something." Mark complimented his dad as he tugged the dildo back outside once again, but with a slight difficulty as Landon's ass seemed to pull it back inside.

This was all for too much for Mark to handle, pent up as he already was from his coach teasing him earlier. Putting the dildo aside, he turned his attention back to his dad, who remained still in the same position, holding tight on the edge of the bed, ass up, and his tail stub perked and wagging. The sight of that perfect bubbly doberman ass, and the puffy tail ring between the two large mounds which glistened with lube, ready for entry, nearly made him blow his load right then, but he held back long enough to climb forward over his dad and bringing his leaking cocktip to poke and drag between the two buns and touch his dad's sensitive puffy ring. The moment got so heated that neither of the dobies uttered a word or sound as Mark's tapered cocktip poked at the dilated, gaping hole. Only a low groaning moan which slowly grew louder was heard, as Mark lowered his hips and began to slide inside his father's ass.

First an inch, then two, and every second that he could feel his own dad's warm, wet, and slick insides slowly envelop his cock, Mark's mouth gasped in a soundless moan. He was unable to halt himself, sinking lower and lower inside as he did. And his dad's incredible muscles seemed to pull him inside of their own accord. If he hadn't had a fat knot himself he would have thrust balls deep inside his dad on the first thrust. Although his knot was smaller than his coach, he was still hindered by Landon's tailhole as he fully inserted himself inside him. His knot was kissed by the puffy ring, and their plump balls pushing against each others.

Mark was only vaguely aware that he was fully sheathed inside his dad's ass, his groin cushioned by Landon's bubbly ass, as his mind was soaring through the height of delight. Still without uttering a single word, the younger doberman began to pull out about halfway before getting overwhelmed with need to shove back inside, and so he thrust down and hilted inside Landon once again.

Over and over he repeated himself, pulling back slowly and then thrusting back inside his doberman father's ass. A low, grunting groan raised between them. And each time it grew louder as the thrusting grew faster, deeper and more urgent.

Soon Mark was thrusting away madly into his dad's ass. The skillful insides of his dad's anal passageway played him like a fiddle, pulling him in when he thrust forward and clinging needily to his shaft as he pulled back. The bed beneath the two dobies creaked slightly as the younger doberman buried himself hard and deep into his guts over and over.

His coach's teasing, his dad's amazing ass, the idea that the stoic manly man doberman was taking his cock without complaints, but with needy grunts. Not to mention that he was finally able to use the topping skills he'd been taught by his coach, hoping to make him proud. All of it overwhelmed the young doberman son, and in a final, desperate thrust full of love and need, he howled out loud as he crammed his thick knot into his dad, and as his heavy sack had tightened he was finally able to blow his load deep inside Landon's ass, his father, his dad. Shooting wave after wave of his potent cum deep inside his dad, getting hot at the thought that he was pumping his dad full of his own grandkids. His orgasm was followed immediately by his father tensing up around his knot, milking him for every drop of his rich puppy batter.

Mark collapsed onto his father's broad back as he neared the end of his orgasm, panting slightly as he only just now realised how truly drained he felt from fucking his dad.

......

The true realisation of what he had down dawned upon him and he suddenly felt awkward, despite crossing the line way, waaay back. Here he was, balls deep and tied to his dad's ass. Trying to act as confident as he'd been before he slowly pushes himself up so that he isn't laying atop Landon.

"Uh, you okay dad?" He asked gingerly, watching his dad beneath him remaining still for a moment, aside from some heavy breathing before he pulled himself up on his elbows with ease and looking back over his shoulder at Mark. His eyes had a sharp look in them but his cheeks was still flushed slightly red.

"... I'm fine. Though you really did a number on my ass, I haven't been fucked like that since my college days." He sighed, wincing slightly as he shifted around. "And did you have to knot me? I was planning on making dinner before you came home."

"You uh, you seem awfully nonchalant about letting your son fuck you." No matter how he worded it, it would sound weird. Given their current situation he felt like he didn't need to mince words.

"Well if I didn't want it to happen I wouldn't have let myself get into a situation like this." He sighed again, turning away to rest his chin on his crossed arms. "Guess we gotta wait out that knot of yours. I gotta say I was surprised by how big you are. You've grown quite a lot." He murmured under his breath, and Mark could feel the short tail nub wagging against his lower abdomen.

Grinning slightly, Mark laid down atop his dad's back and brought his muzzle down to his cheek. "So what's for dinner dad?" The dobie son asked cheekily, nuzzling into his dad.