Story by Custos
(Original posting 19 August 2018 on https://inkbunny.net/Custos)

Please don’t repost this story, let it remain in my gallery on inkbunny!
This story contains material for adults only, do not read if you’re a minor.
The material presented is fictional and for adult fantasy only.
The author does not condone any of the depicted illegal activity in real life.

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SenGrisane commission: When Daddy Comes Home

Sen moans at the sensation of the bulbous silicone surface rotating and grinding in between his butt cheeks, the little six year old donkey boy lying over his mommy’s lap in the parental bed. Mom is handling the large fake equine shaped penis, gently prodding its tip at her young son’s anus in preparation for when his daddy comes home. The donkey boy moans out again as his prepared hole starts to give, his own little cocklet stiff as a nail and grinding down into his mother’s lap as mommy’s free hand strokes Sen’s hair.
“Shh, just as we practiced. Deep breaths and relax your tushy, sweetheart.”

It happens almost so fast that Sen didn’t notice, the young donkey boy gasping when suddenly his anal ring gives way and allows the entire head of the dildo to enter his heated little body. Mom just smiles, patting her son’s head as she can feel his little cock twitching on her thighs:”Very good, Sen. I’m so proud of you.”

If Sen were a kitten, he would’ve started purring at the praise, the boy closing his eyes and smiling broadly as he wiggles his cute little bum up into the large sex toy:”I love you, mommy!”
His mother leans down, her fuzzy large breasts gently caressing Sen’s back and her pert nipples tickling him as his mommy gives him a kiss on top of the head:”I love you too, sweetheart.”

Mom then grabs the dry base of the dildo firmly, her other hand holding Sen still as she gently but firmly starts pressing the toy inwards with small thrusts. Little Sen is panting by now and humping his little willy into his mother’s thighs, grasping at the bedsheets and closing his eyes as he groans in both pleasure and discomfort. Somehow his mommy is always able to spare him from any pain, the woman having a natural instinct of just how far she can push her son’s limits at any time. She rests the dildo inside her son’s butt for a moment, the toy by far not even halfway inside yet but it’s not a race. Slow and steady is her motto!

Sen’s mommy reaches in between Sen’s spread legs and underneath her precious little boy, finding his throbbing excitement and his cute little balls pulled up against his body. She gently squeezes each individual testicle, as if testing grapes for ripeness, which again elicits a pleasurable moan from her six year old son. She and her husband have always taught their little boy to have an open mind, to explore freely but always to remember consent and have the other party’s well being in mind. Ever since Sen was a baby he loved having his cute little sac squeezed and played with, perhaps even more so than his penis, and thus she and her husband have spent many hours just caressing, massaging or even licking and suckling his sensitive little balls. On many occasions it has helped Sen sleep when he was fussy or had a fever.

Mom gives Sen’s little balls another squeeze, making him giggle, before she takes hold of the large silicone penis again and proceeds to gently but firmly thrust it inside her son’s anus. Sen is clawing at the bedsheets by now, his young immature mind overstimulated and when suddenly the equine sex toy’s medial ring is pushed inside of him. He cries out and bucks his hips, allowing the invader to slip even deeper inside his young anus and cause his stiff cocklet to twitch in a powerful immature orgasm. Sen’s balls are drawn up tight, wet in the lube that has dripped down from his tail hole, but to mommy’s delight she can see her little boy’s perineum bulge and relax in a futile attempt to spurt forth semen.

She keeps stroking her little boy’s back and mane as Sen continues to ride out his blissful dry orgasm, whispering sweet words of praise and encouragement to her son as he bucks his cocklet into her lap. Finally Sen calms down, the six-year-old closing his eyes and laying down exhausted on his mother’s lap as his anus completely relaxes, allowing another large chunk of the sex toy to slide in until it bottoms out. The sex toy is almost the same size as dad’s penis, which allows him to intimately love his son as well.

Mom and dad have always had two baby albums, one fit for public viewing with only innocent pictures, and a private one they allow only their closest like-minded swinger friends to view. Included in this album are also pictures of dad’s penis where mom marked the length able to disappear into their son’s butt in washable marker. The earliest they were able to fit even just the tip inside Sen was when he was six months old, the picture featuring a proud erection with a marker line just underneath dad’s cock head and the symbols ‘6mo’ written next to it. The erection dangles above Sen’s crib, the baby boy sleeping but mommy holds his legs apart to show the camera his gaping sperm leaking anus.

The other pictures are similar, but ‘6mo’ changed to ‘1yo’ and in the latest one ‘6yo’. Sen also started to be active in them, the little boy growing older and holding his daddy’s penis or kissing it as he proudly shows off the marker line going higher up his father’s erection.

Mommy sighs contentedly, all those happy memories flashing by in an instant as she keeps the toy secured inside Sen’s anus, the donkey boy’s breathing calming down and his anal ring starting to grip the toy harder again. She gives another few shallow thrusts with the fake penis before reaching for her nightstand again, retrieving a small leather harness she made just for Sen. She ties it around his waist and underneath the bottom of the dildo, locking it in place as she allows Sen to stand up. The leather harness holds the sex toy inside her son’s anus perfectly, preventing it from tightening up again before Sen’s father comes home.

They don’t have to wait for long as their intimate play has taken well over an hour, Sen’s mom in the kitchen preparing dinner and Sen lying on the couch watching cartoons when the front door opens, “Honey, I’m home.”
Mom has pulled on her pink nighty again, the see-through fabric leaving nothing to the imagination, with no panties at all, leaving her blushing pink pussy bare for all to see. She meets her husband in the hallway, Sen already ahead of her as he’s lifted up and gripped in a bear hug by his daddy, the boy still naked except for the dildo and harness, “Hey champ! Missed me?”
- “Uhu, daddy. Me and mommy!”

Mom smiles and hugs her husband and child as she leans in for a kiss:”Very much!”
Daddy looks down at mommy’s pussy immediately, blushing a little as he feels something twitch to attention in his trousers:”I can see that! First mommy, then Sen or the other way around today?”
Sen pipes up immediately, excitedly jumping up and down in his father’s arms and almost falling down:”Me first daddy! Mommy and I practiced for you!”
Dad grins and nuzzles his son’s nose, one arm holding up his six year old son underneath his legs whilst the other moves from his wive’s waist to touch the dildo sticking out of his little boy’s anus:”I can see that. Feels deeper than last time. Very good job, kiddo!”
Sen grins back at his daddy, his little cocklet stiff as a nail again and rubbing into his daddy’s chest as he’s still held up:”Uhu! Hurry daddy, hurry! I want a new picture today!”

Sen’s dad looks at mom, the beautiful donkey woman with blonde curls on her head smiling as she winks:”I can take care of dinner. You go take care of our son.”
The donkey man grins and puts Sen down on his hooves, taking off his jacket whilst his son already fumbles with his daddy’s belt buckle. Dad just chuckles as he puts away his briefcase, his pants already down and his six-year-old rubbing his erection through his underwear before the adult man has even had a chance to take off his shoes:”Hehe, hold on, kiddo! Daddy needs to take off his shoes first.”
Sen smiles and nods, daddy sitting down on a nearby chair as he starts undoing the laces on one shoe whilst his son does the other. Sen doesn’t have the hang of tying his shoes quite down yet, but he’s a champion at untying them, especially when that process means his daddy can play with him faster!

Finally the adult donkey man has his shoes off, his son jumping up and down impatiently as his daddy pulls off his pants and underpants, leaving on only his shirt. Sen can’t wait any longer, though and jumps into his daddy’s arms, the man chuckling and holding his son to his chest firmly as he walks upstairs to the parental bedroom. Unlike his son, his equine penis is almost completely black with very few white splotches, the tip of his erection bouncing back and forth against his son’s naked buttocks as he carries the giggling boy, his sac heavy and firm, fully loaded with love for his son and wife. Sen pulls up his daddy’s shirt a little so his erect little cocklet can rub freely skin to fur with his father’s chest and upper stomach, something the boy enjoys a lot.

Dad enters the bedroom and lays down his son on the bed, the bottomless man smiling down at Sen as he starts to undo the buttons on his shirt. He is a little surprised when his son stops him from doing so, the little boy kneeling down on the sheets since sitting down is not possible with so much dildo still sticking out of his butt:”What’s up, kiddo? Is daddy not allowed to take off his shirt?”
Sen shakes his head and just grins cheekily, looking at his daddy wearing only a half-open shirt. The adult male stands tall and proud, just like the erection bobbing up and down with the pulse of his heartbeat, not overly muscular but just enough to be the strongest daddy in the world. Daddy’s penis is framed perfectly, thanks to him still wearing the shirt, Sen’s cocklet tingly and twitching as he starts to clumsily masturbate just looking at his strong and wonderful daddy standing there at the foot-end of the bed.

Dad smiles, his heart beating faster at the knowledge that his son admires and worships him so much that the six-year-old spontaneously started masturbating at sight of his daddy half naked. He is one very lucky dad to have such a loving wife and wonderful son.

After allowing Sen a minute to take him all in and masturbate a little, grinding down on the toy in his butt, daddy unbuttons his shirt completely and pulls it off. Now naked as the day he was born, daddy crawls onto the bed and grins as he starts to play wrestle with Sen, the donkey boy squealing in delight as he fights his father. Dad’s hands are everywhere, making Sen’s body heat up even more, grabbing his tight little buns, stroking his tail, caressing his back and stomach, tickling his little sac and squeezing his small but firm erection.

Eventually the boy ends up cradled into his father’s arms whilst the man sits indian-style on the bed, the lips finding each other and smooching somewhere in between an innocent peck and a French kiss. Daddy’s free hand is still caressing Sen’s body all over, making the little boy’s penis twitch in excitement, whilst Sen embraces his father’s neck with both arms, kissing the adult male passionately with his eyes closed. Sen’s pink little tongue connects with his daddy’s, the slimy organs swirling and dancing around each other passionately but delicately, as dad always takes care to be extra careful with his special little boy.

Finally, when daddy’s fingers start squeezing the six-year-old’s erect cocklet, Sen breaks the kiss and whispers huskily:”Ngh, daddy. I want your penis inside.”
Normally, the adult male would tease his little boy a little and pretend to be hesitant about his son’s skills to take him, but today he feels like Sen needs his daddy really hard, especially after he had barely seen his dad that week.

Incredibly delicately and lovingly, dad pecks another kiss on Sen’s lips and lays his special little boy down on the bed, their eyes never breaking the connection as daddy slowly undoes the harness and withdraws the silicone dildo from his son’s anus. Still staring into each others eyes, eyes so full of love, Sen’s dad gently slips two fingers inside his son, eliciting only a pleasurable groan from the little donkey boy which pleases him. When he notices his son can easily take both digits, dad adds another, opening them up a little to test how far his son can stretch.

Sen groans a little, his daddy tries but is never as delicate or soft as his mommy, though sometimes it’s more fun even for the tyke to play a little more rough. Daddy’s extra finger feels good, though, and Sen humps back into his father’s hand. Sen’s dad smiles and gives his son another kiss, speaking softly:”On your tummy or on your back?”
The six-year-old grasps his daddy’s hand, forcing his fingers deeper inside of him:”I wanna see, daddy.”
Dad nods and retrieves the bottle of lube, laying it down next to his son before he grabs Sen’s legs and holds his bottom up in the air, diving his head down as his tongue makes contact with the donkey boy’s sensitive anal ring. Sen gasps and clutches the bedsheets around him, bucking his hips fruitlessly in the air above his face while his daddy’s tongue worms itself into his anus. Daddy masturbates himself, his eyes closed in bliss as he tongues his little boy’s tail hole, his nose bumping into Sen’s balls, the little sac pulled taut.

The six-year-old cries out in pleasure, the bed shaking as he wriggles around:”Ngh, daddy! Deeper, daddy!”
Pulling his son almost completely upside down, Sen’s dad holds his little boy up by embracing his arms just underneath Sen’s thighs. Only Sen’s head and neck touch the bed anymore as he hangs upside down, his lap hanging from his dad’s arms whilst dad’s tongue digs ever deeper inside of him. The donkey boy can feel his father’s penis throbbing hard against his back, pre-cum dribbling down and causing the penis’ friction to go smoothly.

Finally Sen’s dad lowers his boy down on the bed again on his back, Sen not having time to recover from the wonderful rimming as his dad grabs the bottle of lube, squirting some in the palm of his hand as he slathers the lubricant all over the upper half of his angrily throbbing penis. Dad scoots forward on his knees, hooking Sen’s hooves behind his shoulders to keep the boy’s legs up and spread, touching his son’s anal ring one last time with lubed up fingers:”Ready, champ? Daddy will be careful.”

Before Sen can even nod, he gasps out again, his fingers grabbing and digging into the fur on his father’s chest as he can feel the tip of his daddy’s penis finding its mark and sinking inside in one smooth motion:”Ngh, daddy! Daddeeh!”
Sen’s dad hushes his son with soothing murmurs, a lustful and needing haze clouding his mind a little as he can feel his penis bottoming out. A large portion of his shaft is still visible outside of Sen’s butt, but the medial ring has already passed inside.

They hold still quietly for a few moments, giving the little boy time to adjust to his father’s penetration, the adult male planting soft kisses slowly all over Sen’s face and lips. The donkey man then slides his arms underneath Sen’s back, holding his son tight as he lifts his precious little boy up into his arms, the donkey child groaning out as gravity causes even more of his father’s penis to impale him. Daddy holds Sen close to his chest, allowing his son more time to adjust before gently starting to thrust up into him. Sen can feel a tear welling up in the corner of his eye, even though it feels pleasurable, breaking new ground feels very uncomfortable at first. It’s always been this way throughout his career of advancing more of daddy’s dick inside of him, but once a limit was broken it started feeling very good the times after.

Dad hushes and soothes his son still, bouncing him gently up and down on his lap as the adult still kneels on the bed with his son impaled on his cock in his arms. Sen’s stiff little cock is pressing and rubbing into his daddy’s stomach, creating some pleasure to offset the discomfort in his bum, the little boy suddenly leaning his head towards his father’s nipple and taking it into his mouth. Dad smiles and nuzzles the top of his son’s head, allowing him to nurse emotionally from him. Suckling nipples is something Sen loves to do with both parents, but it also helps when he’s feeling distressed or uncomfortable, it usually helped in the past when trying to take daddy deeper than before.

Soon the discomfort starts to wane, Sen’s breathing becoming calmer again as he suckles his daddy’s nipple, swirling his pink little tongue around the sensitive nub. Daddy can’t hold it any longer, the delight of his son’s tight anus squeezing and milking his cock for all its worth is causing his large hefty balls to draw up in imminent orgasm. Quickly, daddy husks to his son:”Ngh, Sen, sweetheart. Wanna suck daddy’s tongue so daddy can give your bum some delicious soothing milk?”

Sen quickly releases his daddy’s nipple and leans his head up whilst daddy leans his face forward, opening his mouth and presenting his tongue by sticking it out. His little boy has always been very orally focused, loving to suck on anything or stick anything in his mouth. Somehow, daddy found out that Sen loved the taste of his daddy’s tongue when he was mere days old and home from the hospital, allowing his son to suckle on his tongue like a pacifier whenever the baby boy wanted. The first time was when dad was changing his baby boy and after finishing leaned over to blew raspberry belly farts onto his tummy, somehow daddy’s tongue found its way into Sen’s mouth and the boy had contently suckled it for minutes before falling asleep.

The six year old donkey boy closes his lips around his daddy’s tongue, closing his eyes and clutching the strong adult male tight as his father’s thrusts grew in velocity and speed. Dad closes his eyes as well, clutching his precious baby boy as he suckled on his tongue, daddy grunting out and planting his penis deeply inside Sen’s butt. Hot semen spurt forth from daddy’s penis, painting Sen’s insides and heating his sore tushy up in warm comfort, the adult male’s balls drawn tight to his body as he hunches into his son’s tail hole. Daddy rides out his orgasm, panting around his son’s muzzle as the boy still suckles on his tongue as if it were a pacifier, the donkey man feeling all energy drain from his body as if he were transferring his very life force and love into his baby boy through his spasming cock.

A few minutes after the spurts had died down to mere dribbling, Sen’s daddy lays himself down on the bed with his precious boy next to him, both still connected through daddy’s penis. Sen had stopped suckling his dad’s tongue and now his head lies in the nook of daddy’s neck against his chest, listening to the adult’s racing heartbeat. Daddy raises his son’s face by the chin, smiling down at Sen and murmuring:”I love you, Sen.”
Sen smiles widely and hugs his daddy tight:”I love you too, daddy.”

Time passes and both are dozing off to slumber land, when suddenly Sen can feel his daddy stir. He can feel his daddy looking down at the end of the bed, hearing his mommy talk softly before a hand grabs the base of daddy’s penis as it is still connected with their son’s butt, “Just marking, dear. We’ll take the picture after dinner.”
Sen can feel mommy’s hand with the marker brush his buttocks, the woman marking the little boy’s progress of taking his daddy’s cock. Sen smiles, nuzzling back into his daddy as he feels the adult man’s hands stroke his back. He can’t wait for the day where he can take daddy completely.