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WARNING: This story contains sexually explicit adult material, including sexual relations between adults and minors. This is purely fictional and is for the sole enjoyment of consenting adults. Seriously, folks, if you can't distinguish fantasy from reality then you need to seek other entertainment. The author in no way condones nor approves of any illegal activities involving underage children. If you are not authorized to read such material in your region, you are strongly urged to leave this site immediately. Feedback and comments welcome at thonglover79@proton.me. Thank you, and enjoy the story!


The Alien Experiment

By: ThongLover (©2022 - ThongLover)

(Mb, Mg, Fb, MFbg)


Julie Walker stood at the bottom of the stairs and shouted up to her children. "Hey kids, make sure you have everything you need for the car ride! It's going to be a long drive!" She could hear her son and daughter scuffling around upstairs as they got their things together for the trip.

Galen Walker was out in the driveway getting everything packed into the car. Chuck, their next door neighbor, stood at the fence between their properties. "Where are you guys headed?" he asked.

"Hi, Chuck! Oh, Julie and I have some vacation time saved up, so we're taking the kids to DinosaurLand for a few days."

"Well, that sounds like fun. Long drive, though."

Yeah, about six hours one way," stated Galen. "Julie and I will take turns driving, so it won't be too bad."

"Well, have a safe trip, neighbor!"

"Thanks, Chuck!" Galen returned to his packing, and within minutes the kids came running out of the house and jumped into the car.

"Is your mother coming?" Galen looked at Trevor and Sara, but they were both lost in their phones. He couldn't help but smile to himself at just how much the kids had grown. Their son, Trevor, who was fourteen, was already about five and a half feet tall with short, brown hair and deep green eyes. He was athletic and had a swimmer's build, and Galen admired his tanned, hairless legs pouring out of his tight boy shorts. His eyes stopped on the apparent bulge underneath the boy's fabric.

Their daughter, Sara, had just turned thirteen and was a spitting image of her mother. She had shoulder length dirty blond hair and bright blue eyes. Galen admired the way his daughter was starting to fill out. She was a few inches shorter than her brother, but shared the same lean athletic appearance. Her developing breasts were accented by the tight crop top she was wearing, which barely reached her pierced navel. Her pink shorts hugged her slim hips and Galen could clearly see her camel toe as it practically begged for attention. His cock twitched as he looked at both of them.

Just then his wife walked out the front door. "I'm coming, Honey! Just had to make sure everything was turned off," Julie said as she made her way to the car. They both got in and buckled up.

"Everything's packed up," stated Galen. "Did we forget anything?"

"Only our favorite toy," Julie replied, giving her husband a mischievous smile and reaching over to squeeze his crotch. He knew full well what she meant by "favorite toy." His cock twitched more as he thought about the double-ended dildo that he and his wife used frequently during sex. Sadly, they would be sharing a hotel suite with the kids, so any sex play would have to be put on hold.

Sara rolled her eyes at her parents, then went back to texting her best friend. Trevor just ignored them, a talent he had perfected once he became a teenager.

Soon, they were on the road and headed for Southern California. About three hours into the trip, they pulled off the freeway to grab lunch and let Julie take over the driving. The burger joint was packed with fellow travelers but the family managed to find a table after ordering their food.

Sitting at a table near them was another family of four. The dad and teenage daughter were on one side, the mom and younger son on the other. The daughter wore a white pair of short shorts and a tight, light blue top that appeared semi-transparent. Galen's eyes were glued to the two quarter size dark spots showing through the fabric. The girl clearly wasn't wearing a bra. Galen glanced over at Trevor and saw him staring at the girl, too. He smiled. Like father, like son.

Halfway through the meal Galen noticed the dad's hand was now resting on his daughter's inner thigh. His fingers were making slow swirling motions that were grazing the outside edges of her camel toe. The girl was acting normally and carrying on a conversation with her mother on the other side of the table.

Galen looked around to see if anyone else was noticing. He saw that everyone was lost in their own conversations, or simply didn't have the same view that he had. He looked over again and saw the daughter's hand reach under the table and move her dad's hand higher, shoving it against her pussy as she spread her legs wider. Galen began choking on his burger.

"Are you alright, Dear?" Julie asked.

Galen swallowed a few sips of his soda. "Yeah, I'm fine. I just took a bigger bite than I should have." He smiled at Julie as he gulped down his drink.

He looked back over at the other table and saw that the dad's hand was now inside the front of the daughter's shorts. He could clearly see rhythmic movements underneath the fabric. The daughter was eating slowly and no longer in a conversation with her mother. Her eyes looked hazy.

Galen's cock was now hard as a rock and straining painfully against his shorts. He moved around in his seat in a futile attempt to relieve the pressure. He glanced over to Sara and suddenly found himself wondering what it would be like to do the same with her. This was not helping his painful situation.

"Isn't that right, Dear?" He heard Julie's voice and looked over at her.

"What was that?" he asked.

"Oh, for goodness sake," she said. "Weren't you listening to what I was saying? And why is your face so red?"

Galen took a few seconds to compose himself before answering. "Um, sorry, Honey," he replied. "I guess I was still trying to recover from choking earlier.

Julie gave him a puzzled look and he did his best to give her a reassuring smile.

"Well, I'm glad you're okay, Dear," she said, then turned to her children. "Kids, are you finished with your lunch?"

The family gathered their trash and placed it on the tray to discard as they left. Galen stole one more glance at the other table and saw that the dad's hand was no longer in his daughter's shorts, but there was a large, noticeable wet spot in her crotch. She had a satisfied smile on her face and was looking lovingly at her dad. Galen smiled to himself and got up to leave with his family.

After the much needed pit stop, the family was on the road again and anxious to get to their hotel. About half an hour later, Julie could see smoke pouring out from under the hood. She alerted Galen, who was taking a little nap in the passenger seat.

"You'd better pull off to the side so I can take a look," said Galen, clearly alarmed.

Galen opened the hood and examined the engine. He looked around for a few minutes but couldn't spot the problem. He got back in the car and called for a tow truck.

Forty-five minutes later, they were being towed to the nearest garage, which was in a remote area of California's Central Valley about five miles from the freeway. It was more of a glorified rest area with a gas station and one motel.

The prognosis from the mechanic at the station wasn't good. They needed a special part that wouldn't arrive until the next day, so they were forced to spend the night at the motel. They were all disappointed, especially the kids, but since there was nothing they could do they decided to make the best of it. After a greasy meal from the gas station "deli," they settled down for the night and were looking forward to resuming their trip the next day.

Because there were only two full size beds in the room, Sara and Trevor had to share one of them. This did nothing to improve their mood, and Sara made it perfectly clear that Trevor was to keep as far away from her as possible. Galen and Julie did their best to referee the situation. Luckily, they were all pretty tired and just wanted the night to be over with. Sleep came quickly.

Sometime in the middle of the night they suddenly awoke to an intense green light flooding the room, and what sounded like a howling wind outside. Julie and Sara began screaming as the beds started shaking violently. Suddenly, the beds started rising off the floor and the green light got brighter. All four of them were blinded and dizzy, and soon they were all unconscious.

The family awoke to a soft white light shining somewhere above their heads. Their beds were gone and they appeared to be laying on some sort of padded floor next to each other. They had no covers on and they suddenly realized they were naked. They all made attempts to cover their genitals as they looked around disoriented and afraid. All of them rose to their feet and realized that it definitely wasn't their motel room. This room was round, about twenty feet across, and had no windows or doors. Looking up, they could see the soft light but no ceiling.

Galen began speaking in a shaky voice. "Hello?" He paused for a response. "Hello? Is anybody there?"

"Where are we?" asked Julie, more to herself than anyone else. She was still a bit dazed and trying to cover her breasts and crotch. She looked over at Galen who was still trying to get someone's attention.

"What's going on?" asked Sara, also trying to cover her small, budding breasts and her mostly hairless pussy. "Why are we all naked?"

"Goddamn it!" Galen was now shouting and pacing around. "What the hell is going on? Someone answer me!"

Galen walked around the circular wall looking for some sort of door or opening, discovering that the wall was completely smooth. He wondered how they had entered as he continued shouting.

Suddenly, a metallic voice sounded from somewhere above them. "Welcome, humans. Please do not be alarmed," the voice began. "We have interrupted your sleep pattern in order to conduct an experiment. In a moment you will see the light briefly change to the color red, and you will hear a soft chime. Once that happens you will feel momentarily dizzy, but rest assured that the feeling will pass. You are in no danger, and no harm will come to you."

"Who are you?!" shouted Galen. "And why are you doing this?!"

There was no answer. Suddenly, they all saw the light change to red and they heard the chime. The light changed back to white and all of them suddenly felt dizzy and disoriented. Galen bent over and placed his hands on his knees, trying to stave off the nauseous feeling in his stomach.

His wife stumbled around, looking pale. The kids were doing the same. None of them seemed concerned about their nudity anymore. They just wanted the dizziness to go away and to somehow get out of there. But as the feelings wore off, a warm liquid-like sensation passed through their bodies, making their skin tingle. Their faces and chests became flushed and suddenly they all felt extremely aroused. They all looked at each other, their eyes full of lust and longing.

Galen and Trevor suddenly noticed that they had rock hard erections. The sensations flowing through their cocks were unbelievably overpowering. Precum leaked steadily from the slits. Their hands darted unconsciously to their crotches and they began to slowly stroke their shafts, unconcerned that the girls were watching. All they cared about was relieving the incredible lust building up inside them.

Julie and Sara were feeling the same overwhelming sensations, and watched as the guys played with their cocks. Their hands, too, had minds of their own and soon found their soaked pussies. Their juices were dripping out of their cunts in streams, coating their fingers and running down their legs.

For the first time, Julie watched her 14-year-old son stroke his erect cock, and watched as her 13-year-old daughter played with her pussy and furiously rubbed her clit. She knew all of this should feel wrong, but the sensations were so overpowering they drowned out any guilt she was feeling. Her kids were now objects of her intense desires.

Without feeling in control of her own body, Julie walked over to her son and dropped to her knees in front of him. She stole the cock from his hand and gave it a few strokes, then began licking all around the head. She licked up the precum that was leaking out, then ran her tongue up and down the underside of his shaft. Trevor let out a series of soft moans.

"Oh, Mom," he whispered loudly. "That feels so good! Suck my cock, Mom! I want to cum in your mouth!"

Julie took her son's entire cock in her mouth, and wondered how he learned to talk so dirty. Her cunt was getting wetter just listening to his foul mouth. She could feel the head of his cock touching the back of her throat as her mouth closed in tighter and her tongue massaged his shaft.

His mom's warm, wet mouth was almost too much for Trevor. Soon, he felt the familiar sensations of an orgasm flow through his body.

"Oh, fuck, Mom! I'm going to cum! Swallow my cum, Mom!"

"Yes, Baby! Give Mommy all your cum!" Julie shouted as she kept stroking and sucking her son's shaft. "I want to taste your fucking cum in my mouth!"

Just then Trevor let loose streams of boy juice inside his mom's pretty mouth. Julie swallowed it all as it kept squirting out. It tasted a bit different from her husband's cum, but she really liked the slightly salty and musty taste of her son. She kept stroking and sucking Trevor's cock, trying to squeeze out one last drop before she had to remove it from her mouth.

While Julie was sucking on Trevor, Sara had walked over to her dad and was mimicking her mom. She had her dad's cock in her mouth and was trying hard not to choke on it. He had his hands on her head, moaning loudly and thrusting his shaft into his daughter's gorgeous teenage mouth.

"That's it, Baby Girl! Mmm... yeah! Suck Daddy's cock! Make your daddy cum!"

This was Sara's first experience at sucking a cock, but the intense feelings flowing through her somehow managed to make it appear like she had been doing it for years. She stroked and sucked like a professional.

"Oh, shit, Baby Girl! Daddy's cumming!" shouted Galen.

"Give me your cum, Daddy!" replied Sara. "Fill your little girl's mouth with your hot cum!" She gave her dad another few strokes and ran her tongue over his piss slit. Galen couldn't believe how naughty his daughter could talk. He quickly shot his load deep down her throat. She choked on it at first, but managed to swallow most of it. Some of his cum dribbled down the corners of her mouth and onto her small breasts. She looked up at her dad and smiled.

He helped her to her feet, then planted a sensuous kiss on her lips. Their mouths opened, and their tongues were soon dancing frantically with each other. Galen tasted his cum in his daughter's mouth. His hands were roaming all over Sara's cute ass and into her crack as they continued kissing. He found her puckered hole and teased it.

Julie stood up after finishing with Trevor and looked over to see her husband and daughter engaged in a passionate kiss. It was such a turn on to watch them, and soon her hand found her pussy, her fingers sliding in and out of her wet hole. She looked at her son and saw the lust in his eyes as he watched her play with herself. She leaned in and gave him a passionate kiss, feeling his still-hard cock pressed up against her stomach. Soon, their tongues were dueling as well. Soft moans echoed through their mouths as mother and son were lost in blissful surrender.

Trevor's hands roamed all over his mom's ass, disappearing at times into her crack and pressing against her rosebud. He could feel her breasts against his chest, her rigid nipples trying to pierce his flesh. He broke off their kiss and lowered his head to her breasts, taking turns sucking and biting each erect nipple. She moaned loudly and continued rubbing her clit.

"That's it, Honey. Suck Mommy's nipples," she said, breathlessly. "Suck them and bite them, Baby! Make Mommy feel the pain!"

Galen noticed that his cock had not softened since his orgasm. In fact, it was even harder now and spewing more precum. The feelings of lust also seemed to be increasing and he felt like an animal in heat.

He guided his daughter to the floor, laying her on her back. He knelt down and spread her legs out, then buried his face in her crotch. He smelled the intoxicating scents emanating from her teenage cunt and quickly placed his mouth over her hairless opening. His tongue began roaming through her wet folds, causing his daughter to start moaning loudly. She started playing with her nipples as his tongue found her entrance and began probing. As soon as Galen's tongue found his daughter's clit, she let out a loud moan.

"Oh, Daddy, that feels so good!" Her hips began making small thrusts against her dad's mouth. Her body was begging to be ravaged. "Daddy, fuck me!" she exclaimed, breathlessly. "Please fuck me now! Please! Please, fuck me! Fuck your little girl!" Her voice was low and husky. She was possessed.

Julie and Trevor heard Sara's cries and decided to join in on the fun. Julie went over to Sara and got down on her knees, straddling her daughter's face. She lowered herself until she could feel Sara's tongue start licking and probing her drenched cunt.

"That's it, Honey," moaned Julie, "Lick Mommy's pussy. Oh, yeah, right there! Fuck Mommy's cunt with your tongue!"

Galen's head was now inches from his wife's breasts as he fucked his daughter. He moved closer and started sucking on Julie's nipples as she ground her pussy into their daughter's mouth. Trevor noticed his dad's ass moving up and down in the air and just couldn't resist the opportunity. He knelt down between his dad's legs, spit into his hand, then coated his cock to get it nice and wet. With both hands, he parted his dad's ass cheeks and gazed down at his light brown puckered hole. His dad momentarily stopped fucking his sister.

"Oh, yes, Son," Galen said, "Fuck my ass! Sink that beautiful boy cock deep in my ass!"

Trevor let a glob of spit fall onto his dad's tight rosebud, then moved his body forward until the head of his cock was pushing against the puckered hole. His dad winced a bit as Trevor slowly inserted the head past the tight ring, but relaxed and started pushing back on his son's cock. Galen slowly went back to fucking his daughter as his son began plowing his ass. Both kids were now moaning loudly and talking dirty, blending in with their parents' screams of ecstasy.

Sara was now moving her tongue back and forth between her mom's pussy and asshole, probing deep into each one.

"Fuck Mommy's ass with your tongue, Baby Girl! That's it! Fuck me! Fuck Mommy!" Julie's moans got louder as her daughter's tongue went deeper.

Trevor was now balls deep inside his dad and matching the rhythm of Galen's thrusts into his sister. "Oh, Dad!" he shouted, "Your ass feels so good on my cock! Fuck, you feel amazing!"

The sounds of ecstasy and the smells of sex filled the large room. The family had succumbed to their carnal desires without the slightest feelings of guilt or shame. Their need to satisfy their lust was overpowering.

Julie was the first to cry out as an intense orgasm washed through her body, sending juices gushing out of her cunt into her daughter's eager mouth. Sara soon followed with her own orgasm as her mom's juices kept flowing.

"Oh, fuck, Daddy!" she cried out, shouting into her mom's dripping cunt. "I'm cumming! Your little girl is cumming, Daddy!"

The feeling of his daughter's pussy spasming around his cock sent Galen over the edge. He shot stream after stream of hot sperm deep into his daughter's tight, wet cunt as it continued to squeeze his cock dry. Trevor felt his dad's asshole spasm around his cock and this caused him to release his load of hot boy juice deep inside Galen's bowels.

The entire family collapsed in a pile of intertwined arms and legs, hands roaming all over each other's bodies. Nipples were pinched, cocks were stroked, and tongues danced together. The guys' cocks were still hard and erect, and still leaking precum. They were all still incredibly horny and wanted more. They couldn't seem to control their desires and wondered how long this could last.

Soon, though, they noticed the light above them change to red, and that familiar chime echoed throughout the room. The light returned to white and they all felt the intense feelings of lust escape their bodies. The guys' erections finally subsided and feelings of exhaustion took over. Just then the metallic voice returned.

"We want to thank you for allowing us to observe this side of human sexuality. It was most enlightening. As promised, no harm has come to you. In a moment, you will feel very sleepy. Do not be alarmed. You will awake safely in your place of departure, and you will remember everything that has transpired here. We bid you farewell."

Galen started to speak but suddenly felt extremely exhausted. He looked over and saw his family begin to fall asleep and before long his world turned black.

The family awoke a few hours later to sunlight breaking through the curtains of their motel room. They were back in their beds, Galen with Julie and Trevor with Sara. They all felt refreshed and wonderful. A strange energy seemed to flow through their bodies.

They looked at each other and wondered if it had all been a dream, but the fact that they were all naked and smelled of sex made them realize that it was all real. Memories of their previous hours came rushing back, causing the guys to become erect. Julie and Sara could feel themselves getting wet, and everyone instinctively reached for their crotches.

"Boy, that was pretty wild, huh?" said Julie, her face flushed and nipples erect.

"Yeah, Mom," replied Sara. "What was that all about?"

"Well, I think we just got abducted by aliens," said Galen, then chuckled to himself at the thought. "I'm just glad the little green men didn't probe us with their instruments." That got the family laughing.

"Well, it certainly was a fun experiment," added Julie, looking around at her naked family as she slipped a finger through her wet folds and played with a nipple.

"It sure was!" exclaimed Trevor. He suddenly realized that he had been absentmindedly stroking his cock in front of his family, and he didn't care. He looked over and saw his dad doing the same thing.

"Why doesn't all of this feel wrong?" asked Sara. "I mean, I just had sex with my parents! And my brother! I should be feeling so embarrassed right now." The rest of the family looked at her as she rubbed her wet teenage pussy.

"I know, right?" added Julie. "A mother isn't supposed to have sex with her kids. But it felt so good, and I'm not ashamed!"

"Me either," said Galen. "In fact, that was the best experience of my life!"

The family all looked around the room at each other, watching all the cocks being stroked and the pussies being rubbed.

"Okay, I'm just going to say it," Julie finally said. "I think this was a good thing, and just what we needed! I say that we make this a regular part of our family activities from now on."

"Really, Mom?" asked Sara, looking excited.

"Awesome!" exclaimed Trevor.

Galen looked at his wife with lust clearly written on his face. Then looking over at the kids he smiled and said, "You heard your mother. Get over here and fuck your mom and dad."

The family spent the next hour pleasing each other before resuming their road trip. None of them would ever be the same after this, and that's just the way they wanted it.