Around twenty years ago, Percy's father had married his high school and college sweetheart, Amphitrite. Percy's dad had been somewhat of a jock, and was a good enough swimmer that he actually won a couple of gold medals in the Olympics for swimming.
Within a couple of years of marriage, Percy's dad had cheated on Amphitrite. He had an affair with Percy's mom, Sally Jackson. When Amphitrite found out, she just about immediately divorced Percy's dad, who then got engaged to Percy's mom when they found out he was on the way.
Fast forward five or six months, and Percy's dad went on a small fishing voyage with some friends. Whether they crashed into some rocks or if he just abandoned Sally with their son, none of them ever knew. For Percy's sake, Sally always told him he had been lost at sea.
Up to that point, Sally and Amphitrite had only a met a couple of times, and both likely would have escalated to violence if it weren't for Sally being pregnant. But with Poseidon presumably abandoning Sally with her newborn son, Amphitrite now viewed her in a different, sympathetic light.
Amphitrite visited Sally when she was in the hospital, shortly after giving birth to Percy, and comforted the new mother. While Amphitrite and Poseidon were both in their mid-twenties, Sally was only nineteen. Sally was skeptical and mistrusting at first, but she soon formed a bond of sisterhood with Amphitrite.
The next sixteen years saw Amphitrite and Sally becoming practically sisters. Percy was raised by the both of them, and despite having his father's eyes and most of his strong facial features, he was quickly able to worm his way into the hearts of his mom and his 'Aunt Amphitrite.'
When Percy was fourteen, Sally started dating a teacher from his high school, Paul Blowfis. Percy didn't mind him, but because of the absence of his father he had always been very close to his mom and 'aunt', so he had a hard time trusting Paul.
One day, Percy got home from school to find that his mom and aunt were baking cookies. "Hey sweetie," his mom said. "How was your day?"
Percy's mom was, objectively, extremely good looking. She was in her mid thirties but still in her prime - if possible, she was getting even more attractive with age. Her long brown hair descended to her shoulder blades in slight curls. Her warm blue eyes glinted in the sun. Her face was round and angelic.
"Not too bad," Percy said, slinging his backpack off his shoulder and dropping it into a corner.
"Uh huh," his aunt said, not sounding impressed. "And why are you an hour late?"
Amphitrite had flowing black hair and dark eyes. Despite her hands being on her hips in an attempt at sternness, her lips were curled into a kind smile. At forty-five, she was hitting her peak as a MILF, although Percy tried not to think of her in those terms.
Percy scratched the back of his neck. "I got detention again." He said it quickly and quietly, hoping Sally wouldn't hear him.
"Oh Percy!" Sally said with an exasperated but fond sigh. "What happened this time?"
"This senior was bullying Nico, so I punched him in the face."
"Punching people in the face doesn't solve anything, Percy," his mom said sternly.
"I know," he said sullenly. "But if you had heard some of the names he was calling Nico..." Nico was like a brother to Percy; they had been friends for years. Along with their other friend Grover, they made quite the trio: the cripple, the queer, and the dyslexic/ADHD kid. And people like Luke Castellan had a remarkable tendency to piss all three of them off.
"Oh honey," Sally said with a sympathetic frown. She knew the type of insults high school bullies would use against Nico.
Sally tried to change the topic. "Anyways, Percy, I've got some exciting news."
Percy peered into the oven. Blue cookies, his favorite! Something terrible must have happened. He braced himself: "What is it?"
"Paul proposed to me!" Sally exclaimed. She stuck out her hand, which Percy now saw featured some added bling.
"That's great, mom," he tried to sound enthused.
"I told you he wouldn't be happy," Amphitrite said.
"Its not that I'm not happy for you," Percy defended. "I just... I'm used to it just being us three, I guess."
"Oh Percy," Sally said, pulling him into a hug. "I thought you might say that. Which is why we made the cookies for you - and why we're going to give you something you've wanted for a long time."
Percy drew back, confused but eager. "What's that?"
"I know the way you look at your aunt," Sally said. "And the way you look at me."
Percy's eyes went wide. "I don't know what you mean," he backtracked.
"We're gonna give you what you've wanted for so long," Amphitrite said. "We're gonna let you fuck your mommy and your aunty."
Percy staggered backwards but only found a wall. "This ... This has to be some kind of a messed up prank."
"No prank," his mom said. "Just a mom and aunt, loving their son and nephew."
Percy stood, stunned, as both his mom and his aunt kneeled in front of him. Sally, his mom, unbuckled his belt and pulled down his trousers. Amphitrite, his aunt, pulled down his boxers as well. Despite his best effort, his cock sprang out, rigid as it had ever been.
"Oh my," Amphitrite said, her eyes widening. "I never knew our little Percy was so big!" She wrapped her hand around his shaft. When she saw how little she covered, she added a second hand and began to jack off his hard cock. She went slowly at first but soon sped up, adding twists to her motions as well.
Sally went underneath her sister in all but blood's hand and suckled on his heavy nuts. She tugged on his balls before letting them fall out of her mouth with a wet pop. "Your balls are so big, baby. When's the last time you came?"
Percy shrugged, as the question had woken him up from a trance. "This morning, I guess."
"Really?" Sally asked, weighing his balls in her soft hands. "I must have forgotten how horny teenage boys can be!"
"So you came this morning?" Amphitrite asked, rolling his foreskin between her fingers. "Who were you thinking of when you jerked off?"
"Oh, I uh, I didn't," he admitted. "Masturbate, that is. A girl at school gave me a blowjob."
"She gave you what?" His mother asked, outraged. Percy almost whimpered as she let go of his balls. "Who was this hussy?"
"My math tutor," he confessed.
"That sweet Annabeth girl?" Percy nodded. "So that'swhy your mark hasn't been going up," Sally concluded.
That said, she returned to his balls, thankfully.
Amphitrite picked up the conversation. "So when you do jerk off, who do you think about?"
"Mostly Annabeth," he admitted. "A couple of the girls in gym class wear skirts that show a lot, so them also. And..." He looked away, ashamed.
"And who?" Amphitrite asked. Percy didn't respond. She let go of his dick, and Sally's grip on his balls tightened. "Who else?"
"You," he said weakly.
Amphitrite smiled victoriously. Instead of returning to stroking him, she now put his lips around his cock and took him deep into her mouth.
"What about me?" Sally asked. Amphitrite trailed her teeth down his shaft as they waited for a reply.
"Yes," he answered. It was the truth; Sally had a tendency to bend over in front of him to get things from lower cabinets and dressers, and Percy was always rewarded with a lingering view of her fantastic ass.
"Oh, you dirty boy," she said before returning to attend to her son's swollen testes.
Thoughts of his mom's ass made him think about bending her over a table and fucking her, harder and harder until she was barely conscious. Such pleasant thoughts combined with his lovely aunt giving him head, and he soon found himself at his limit.
"Aunt Amphy, I'm gonna cum!" He said.
Sally kept suckling his balls, pushing his cum into his shaft. It rocketed up through his long dick and shot into Amphitrite's throat. He put his hands behind her head and pushed his hips up against her face, making her gag on his cock as he filled her throat with seed.
Amphitrite swallowed every last drop, coaxing his entire load into her mouth. She had had a lot of experience with giving head, though she hadn't done much of it in recent years. Still, it came back to her like she was a natural.
Percy's mom and aunt both stood up and pressed themselves against his sides. Sally turned his head towards and kissed him directly. Percy turned into the kiss and put his arms around her back.
Amphitrite, who had just gotten home from work, took off her black blouse and red skirt, leaving her in just aquamarine colored bra and panties. This accomplished, she pressed against Percy's back, kissing the back of his neck.
Percy felt the round covered breasts against his back and turned to kiss her. He tasted his essence on her lips and tongue, but was so turned on from being sandwiched between his mom and aunt that he could ignore it.
Meanwhile, Sally pulled off her jeans, and old shirt, and her apron, as apart from baking cookies she was a moderately successful author. Like her close friend, she was left in matching sea green lingerie.
The pair of lingerie-clad mature women now pressed against Percy from his front and back. His dick was rock hard, and somewhere in the mix his pants and boxers had been completely removed, leaving him in his orange t-shirt. This was soon removed as well.
Each MILF unclasped her bra and pulled down her panties, exposing their nude forms to Percy. "Holy shit," Percy muttered as he drank in their figures. He had always known that they were attractive, but... holy shit!
Both were significantly shorter than Percy. Percy was around six feet and still growing; both Sally and Amphitrite were around five two, five three. Sally's entire body was tanned, with a triangular strip of dark hair above her crotch. Percy, like most teenage boys, wasn't too familiar with bust sizes, but he knew that Sally's 38E's were huge, the biggest he had even seen.
Amphitrite wasn't as tanned as Sally, and had more noticeable tan lines on her chest and rear. Her tits were huge in their own right, 32F, and when they turned around, Percy saw that as round and perfect as Sally's ass was, Amphitrite's was even bigger and rounder!
Percy began suckling on Sally's tits, the breasts that had nourished him as an infant, and began teasing her pussy with one hand. With his other hand, he put it between Amphitrite's thighs and fingered her as well.
Sally ran her hands through his hair and pushed his head further into her bosom. "Oh yeah, molest those big titties baby," she whispered.
Amphitrite leant over Percy's head and kissed Sally. Sally returned the kiss eagerly, and their tongues soon engaged in battle.
Before long, and far too soon for Percy's tastes, Sally pulled away from the other two. "Percy, honey, I know that you'd love to return the favor, but today's supposed to be all about you." At Percy's crestfallen look, she said, "But if you live up to your size, I'm sure we can find a way to make this happen again."
Percy's eyes lit up at that prospect.
Sally grabbed his manhood, which had been left untouched these last few minutes but was still rigid. It was covered in Amphitrite's saliva, which meant that Sally wouldn't need any extra lube.
"Well, baby," Amphitrite said, putting her hands on her wide hips, "This is your day. Who do you want first?"
Percy barely had to consider that and pulled his mom against him. He grabbed her ass tightly and jiggled them as he kissed her neck. He slowly began to push them forward until her legs came up against a couch.
He pushed her over the side so she lay along the couch, her legs hanging over the edge. She parted her lips with her fingers as he slapped his prick against her thighs.
Percy gradually trailed his dick down her thigh until he rested it on top of her thatch of hair. She kept her lower lips parted with her fingers.
"Please, baby. Put in in me, put in mommy."
Percy placed his head against her lips and pushed through slightly, just enough that his head was inside her but the rest of his shaft was still outside.
"Please, baby," Sally whimpered. "I need you inside me, please!" Without any warning he shoved his length forward all the way; Sally cried out, "Oh fuck yeah! There's a good boy, fuck me so hard!"
Percy didn't give her any time to adjust to his cock inside her and started moving inside her immediately. "Oh god, mom, you're so tight," he said as he felt her inner walls clenching around him.
"I don't know if its that I'm tight, or if you're just so fucking big! Holy shit this cock is so huge!"
Percy reached forward and grabbed her knockers. He squeezed Sally's huge tits and pushed into her harder and faster.
Amphitrite had been fingering herself, but now she kissed Percy. He took one of his hands from his mom's big boobs and inserted his fingers into his aunt's core. She moaned erotically and bucked her hips against his hand. He broke the kiss soon after and nipped his way down his throat and collar. When he got to her bosom, he licked the sweat from the valley between her breasts and kissed her soft flesh. He sucked and licked around her hard, rosy nipples.
He brought his other hand from his mom's tit and began palming one of Amphitrite's tits while sucking and licking at the other. All the while, he kept pushing two fingers into her sopping wet core, while still barreling cock first into his mom.
Sally, who's breasts were now feeling ignored, grabbed and squeezed her own breasts. The naughtiness of fucking her son and the amazing feeling of his dick inside her had her quickly approaching her first climax in many years.
"Oh my god baby, keep fucking me, I'm gonna cum so hard on that beautiful dick of yours, ohhh fuck!" She trailed off towards the end, her voice taking on a higher pitch. Her cunt throbbed around Percy's prick, squeezing him for all he was worth as she came.
Sally's breath hitched as Percy kept slamming into her as fast as he could. Her back arched from the pleasure, lifting up her ass and giving him a better angle to fuck her. He slipped his hands under her ass and lifted her further up and fucked in an almost downwards direction into her.
Her nerves felt like they were on a feedback loop as Percy's dick already sent her to another climax. She nearly passed out from the pleasure and was sure she was drooling as he hammered into her.
Distantly, she could hear Amphitrite whispering, "I bet you love this, don't you, you slut? You love your son tearing apart your pussy! You want nothing more than your son's cock, forever inside of you!"
Sally couldn't formulate a response, and couldn't help the pathetic "No," that escaped her lips when Percy pulled out of her.
With his mother in a nearly comatose state, Percy carried her upstairs. He made to go towards his mom's bedroom, but Amphitrite grabbed him by the swollen cock and led him to his own bedroom instead.
He deposited Sally on the swiveling chair by his desk and then turned towards his sexy aunt. He remembered how huge her ass had seemed, and now he wanted to take a closer inspection of it.
"Bend over my bed," he said. Amphitrite obeyed happily, wiggling her hips at him as she braced her hands against his bed.
He rested his heavy prick on her ass crack. He grabbed her fleshy ass and jiggled them against his dick. He felt like he could cum just from watching her ass.
He lowered his penis down her ass until he was pressing against her wet slit. He slowly pushed forward until he was sheathed all the way inside her. To his awe, she was even tighter than his mom was - probably because she had never given birth before. He spanked her ass, causing her to shriek in surprise, and began rolling his hips against hers.
Percy fucked his aunt from behind, enjoying the feeling of her pleasant walls gripping his manhood. His balls were heavy and full of a huge load, and every time his hips met hers they slapped against her flesh.
Amphitrite bit her lip to hold back breathy moans. She had seen how quickly her closest friend had been turned into Percy's cock slave, and she didn't want to turn into the same squealing mess. She still uttered the occasional moans as Percy rammed so far inside her and as he touched her all over her sensitive body, but at least she wasn't saying anything too embarrassing.
But as Percy sped up his pace, she began to feel her pleasure increasing. His balls were somehow managing to slap against her clit with every passionate thrust, causing more pleasure than she had ever felt from a single person before. She uttered a string of profanities that she couldn't prevent.
Percy smirked confidently above her as he worked her tight cunt. She was holding out better than Sally had, but she was right where he wanted her. He doubled his speed to an almost frantic pace.
"What do you think, Aunty Amphy," he said, using a nickname hadn't used in close to a decade. "Is your little nephew as good as you had hoped?"
Amphitrite's eyes nearly rolled back into her head, but her pleasure only increased her determination. She rolled her hips against his, and he abruptly stopped as she wiggled her hips furiously against his, nearly making him burst. "I don't think we can call you little, that's for sure," she teased.
Percy frowned and grabbed her roughly. He yanked on her hair and pulled her towards him, making her body bend. Then he once more started sheathing himself inside her, more roughly and harder than before.
Percy's spanks, which had previously been light slaps to make her ass jiggle, now gained a sadistic edge, spanking her fiercely and making her yelp in pain. His handprints soon covered her ass, but at no point did she tell him to stop.
"You love this cock, don't you?" he asked.
It was too much for Amphitrite. Her pussy seized around his cock as she broke. "Oooh god fucking yes, I love your cock so much! Fuck, make me cum, make me cum, there's a good boy, ooooOOOH YES, you own this fucking pussy, no other dick can live up to this, FUCK!"
She came again and again on his throbbing erection as he finally let go of her hair. He squeezed her tits from behind while he continued fucking her with all his strength, intending to drive her into a coma like his mother.
Speaking of Sally, she had woken up just before this, and unnoticed by both had left to go to her room. She now returned with a long, thick rubber penis tied around her hips. Despite its nearly comedic size, it still wasn't as big as Percy's real dick.
Sally stepped in front of Amphitrite, her strap-on waving in front of her face. She forced the dildo into her mouth and began riding her face, making her gag on her fake dick.
When Amphitrite's series of orgasms had finally subsided, she finally noticed the new penis inside her mouth. She gave her a confused look but sucked on it obligingly. Mother and son spit-roasted Amphitrite for some time before they agreed to change things up.
It took some negotiating, but it ended up with Amphitrite on her back, wearing the strap-on. Sally lay on top of her, their breasts smushed together and the plastic cock inside her. Finally, Percy was on top of her, and slow pushed his dick into her rosebud.
Sally's ass was incredibly tight, almost painfully so. It was clear that she had never done anal before. Percy's huge dick spread her sphincter open, while Amphitrite slowly but with increasing familiarity fucked her pussy.
Sally had barely managed one big dick inside her, and once Percy gained momentum in her asshole she could feel her insides being torn apart by the pleasure of double penetration.
Not wanting to be the focus of pleasure any more than she already had been, Sally now donned the dildo. They moved around so that Percy was on the bottom with Amphitrite on top of him, her back against his chest, so that his dick was buried inside her ass. Meanwhile, Sally mounted Amphitrite and plunged into her.
Amphitrite's ass was even tighter than Sally's had been, but this position didn't give Percy as much freedom. He shuffled his hips against the huge butt on top of him, but wasn't able to thrust very hard.
In addition, Sally proved to be surprisingly willing to experiment, at one point trying to force her dildo into Percy's ass, which he quickly put a stop to.
Before long they switched up once again to their original positions, but with Amphitrite and Sally switched. Percy now had full access to his aunt's ass, but soon enough he realized that he had access to his mom's ass, too!
Percy switched between asses, taking each for several thrusts before switching. His balls were bubbling as he neared his much anticipated climax.
"Ah shit, I'm gonna cum!" he warned. His heavy balls tensed up and shot semen through his dick. He jerked his hips as he came, flooding Sally's ass with his load. When her ass was dribbling with his cum but his cock was still spurting out a healthy amount of sperm, he switched into Amphitrite's sphincter and filled that, too. Finally, when that was full he launched his last couple of spurts in between the two women, coating their stomachs.
He lay on his back next to the pair of MILFs. Amphitrite got off Sally and lay on Percy's other side.
Breaking the silence, Percy said, "Can we do this again sometime?"
Neither older woman needed to look at the other. Simultaneously, they both answered in the affirmative.
Well, Amphitrite said "Fuck yes!"
Sally responded, "Once you finish your homework."
From that day on, Percy's homework was almost never late.