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The Device

The Device

by Jamesmadalyn
20 min read
4.65 (10800 views)
incestsistermotheralienscifi
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########## Dreams ##########

Lianna tossed and turned in bed. Her husband had fell asleep nearly an hour ago, she was jealous he was able to sleep as soundly as he did. Her own sleep had been fine as of the past few months, but for the past few days she could hardly fall asleep before her own typical bedtime of 9pm.

Was it her dreams that had kept her from falling asleep?

For the past few days, even when she could sleep, she was having ridiculous, erotic dreams. They were strange as well. Not just because they were so erotic, but because she didn't know what they could be coming from.

Normally her dreams had some significance to her lived experience: missing class in college (even after all these years), dropping her kids off late or to the wrong school. Normal anxiety dreams.

Her current dreams were much, much different.

The past two nights she had dreamed of an impossible man, one with multiple arms. The mysterious man, almost alien, carried her off to bed each night. Her husband, asleep beside her, never woke as she was ravaged and turned out by the dreamy figure. She was sure the dreams weren't real. But, if the man had come to her bedroom the way they rocked the bed would have surely woken up Brian lying next to them.

When she finally fell asleep she had a new dream. Really it was the same dream, same setting at least, but this time the figure was different. Short, at least shorter than most men, sat a figure at the foot of her bed. She checked, her husband was fast asleep again beside her. The dream was more vivid than those previous. She removed her covers, naked now beside a slim pair of satin panties.

She crawled now towards the edge of the bed. It was longer than usual, massive even, clearly not her real bed. She approached the naked male figure and began to hear some sort of wet noise coming from something she couldn't see over the foot of her bed.

She creeped closer and closer to the man, inching slowly as she approached. She was at the end when she saw a sight that she was sure could've never come from any true lived experience.

There, at the foot of the bed sat a creature, something you could try to describe as a dwarf or an elf. As he sat, his feet struggled to reach the ground, but as she got closer and took a peak around the front sat perhaps the longest penis she had ever seen (real or fake) lying off the bed. At the end of said penis was a young woman, maybe the spitting image of Lianna herself, naked and taking care of the short man's penis with her mouth and hands.

She watched as the woman, wearing a pair of panties not so different from her own, stared into the man's eyes as she held the penis up, taking the underside and running only half the length with her tongue, being careful to paint the surface evenly with spit and saliva.

How many seconds would it take Lianna to accomplish the same task?

It was herself now sitting there at the foot of the bed. She was nearly a foot and a half away from the bed but face to face with the head of the small man's penis. It was only a hair's distance away from her. She could see the head pulsing. The dick swayed in front of her like a skyscraper in the wind. It was beyond massive.

Her dream felt so real now. She could see every detail of the monster in front of her. It ran with large veins down the side and a fat pink head. It was cut and had a massive crown on the head. It looked like it would take a little work to put your mouth on, but nothing Lianna wouldn't be able to handle.

Why would she care, why was she thinking about such things anyways? She was not feet away from her husband, both in real life and her dream, and was lusting over a cock that would've outright embarrassed him.

Then she was no longer on the floor in front of the man, but on the bed next to her husband. The short figure was at her legs now. He came forward, dick in hand, and pushed his pelvis to her hips. Her panties were gone. He laid his manhood on her stomach. It stretched from the base of her legs to her breasts now. Had it grown? She could feel the thing move side to side as it worked its way in between her cleavage. It was staring at her through her breasts. The small man bent forward to press them together. Even as size-able as her breasts were they struggled to cover the thing.

She could feel it moving now, like a snake on her stomach. Lurching and wriggling with his every move like an anaconda let loose on her body.

"Mom."

She looked at her husband laying next to her. The man at her legs grabbed beneath her knees and began to lift her legs.

"Mom."

He stood up. Her legs were down next to her chest now.

"Mom!"

The short man, figure, whatever it was, drove what felt like two feet of cock effortlessly into her, she could feel every inch as it passed in, an intense pain, pleasure, something crashed into her as she contemplated how a thing like that would ever fit into a human being.

"MOM!"

Lianna awoke now, back under the covers of her bed. It was light out, she turned and through groggy eyes saw her daughter Sarah staring back at her.

"Mom it's almost time for you to leave for work. Dad said you were sleeping in and I needed to wake you if it was past 7:30. It's 7:45!" She shook her mom through the covers. "You need to get going."

"Fuck, I'm going to be late for work." Lianna managed.

She lifted past her daughter, out of bed, and rushed to the bathroom. In real life, she wore a full set of pajamas to bed, so there was no danger of flashing anyone inappropriately.

She could hear her daughter turn and leave the room, as she did Sarah gave her a last call: "Mark and I had some breakfast left over if you want any, there's still some coffee on the pot!"

Lianna sat and stared at herself in a mirror a moment. In what world was she in with these dreams? What woman was she, and what had she seen or read recently that would be anything like this?

A knock came to her door. "Hey mom, I don't know if Sarah mentioned it but I'm staying home from work today, let me know if you need anything done!"

"Ok honey I... think the house is set for today. No big chores needed."

"Sounds good mom, just checking!"

As she looked through the mirror back to the doorway, she caught a glimpse of Mark before he left the room. He was wearing the same watch he had been wearing all week. She had mentioned it to Brian but both thought nothing of it. He told her: "so what if he's obsessed with some futuristic watch? It seems like every man in his 20s goes through weird phases, weird obsessions with watches, cars, and girls."

Lianna got dressed, grabbed a coffee to go, and kept the memories of her dreams neatly stashed away for later.

########## Size Matters ##########

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Sarah strutted into Mark's room authoritatively, striding her way to his bed. It was near eight now and the house was empty.

"Mom's gone, just saw her car leave the driveway. Class is canceled for the day, so we have aaaalllllll day to play around little brother." She faced the bed and looked back at him seductively. She wore a pair of loose gym shorts and one of his t-shirts again.

Mark said nothing but smiled and flashed his watch to her, inlets glowing with not one, but two sources of electricity now.

"So do you think it's another body? Maybe it's some variant of two-dicks, or maybe this one has four dicks or something fucking wild like that."

"Feels like that would be a little derivative don't you think? I mean, I could barely take two dicks, I think there's something of diminishing return on the number of dicks you add onto a body, right?"

Sarah sat again in Mark's bed.

"If you had more people involved, you could make use of more dicks."

"Mark do you want to go to the volleyball team and ask if anyone is down for a little group fuck with an alien?"

"I mean..."

Sarah kicked at him for considering the idea.

"The last thing you want to do right now is bring more people into this situation dude. The more people that know the more people could say something, before you know it you're on the news."

"Sure you don't want to keep my new body all to yourself?"

"It's not thaaaaat great dude." She toned sarcastically. She looked up to the wall and away from him. "ok it is a little great..."

"I know this has been, great and all, and really hot too. But I do want to say I'm glad you've been cool about the watch and all this weird shit. I'm glad I have someone to go through this with."

Sarah looked back and gazed at her brother. She was glad he was comfortable. "I'm glad you feel comfortable. I would want you to feel anxious about this all by yourself..." She rolled over from her back to her stomach. She gripped the sheets and gave short humps to the bed. "... and I'm glad that you have some hot alien cock to give me."

Mark rolled his eyes. He got up from his spot on his computer chair and paced. "Do you think we should go for it, should I try it? I haven't pressed it yet.

Sarah had stopped dry humping the bed and looked at her brother from her viewpoint on her stomach. "Well duh you should press it. What else is there to do? It revealed a new little thingy to you, so you press it and we see what it is. Seems pretty straight forward."

"Ok. Mom and dad are gone for the day, I called out of work. We should have all day in case something crazy happens."

"Quit being a freak and just press it already."

Mark brought his finger down into the new inlet. Electricity shot through his finger and up into his entire body. He felt the familiar sensation of his body changing, but could feel it changing in different ways now.

Instead of growing arms and growing taller, he begun to shrink. His view of the room now changed as his legs grew shorter and his torso and arms came down in size.

From Sarah's perspective she saw the same glowing white form overtake Mark's body. She saw his shrink in size, bringing Mark from his five-foot-eleven frame he had once sported, to something that looked like it must be nearly four-and-a-half-feet. Simone Biles or Snookie would've given him a run for his money.

And just like that, there was Mark in his new body. Standing almost a head below her now, she quickly hopped off the bed and brought herself closer to Mark.

"Well that's, not what I was thinking."

"Dude this fucking sucks. I was thinking the next body would definitely be better than the last, this one fucking sucks." He lamented.

Mark turned from his sister and examined himself in his mirror. He was absolutely a smaller creature, something built like a dwarf from fantasy novels. Dressed in an alien wetsuit, he had a face with two shocks of beard on either side of it. He looked like a blacksmith from the 15th century.

At the least his arms and legs were muscular again. He could move fine in the body, he.... he could feel something off in his pants. He looked again to his legs in the mirror and could see and feel his trousers growing tight.

His sister stole the words from him.

"I think I know what might be different about this body."

It was an impressive bulge, and Mark could only feel it grow larger. If his pants weren't made of alien material he was sure they would've broken by now. It continued to grow and grow and nearly matched the leg of the side of his pants it had chosen to grow on.

"You either have a third leg, or your dick is bigger than your last two combined."

"I have to get this thing out of my fucking pants."

"Go to the bed and I'll help you get your pants off."

Sarah helped her brother waddle with a stiff leg over to the bed. He sat down - his legs barely touched the ground - and they both worked to pull his pants off of him.

As they worked the pants off, Sarah saw a pale skinned third leg coming out of his clothes. It was freakishly long, they hadn't worked the pants halfway down his calves until the thing popped out fully. She was standing at the foot of the bed when they finally go the pants off and was almost wordless when his legs were finally free.

"Mark this is the largest penis that's probably ever existed. This is a third leg, it's a fucking elephant trunk." She quipped. "I haven't even seen a dick this large in porn before. I haven't seen a dick this large that's REAL in porn before. Anything this big would have to be fucking fake."

Mark was speechless himself. He felt as though the pants were going to cut the dick off entirely before they got them off. He sat upright on the bed and had the same sense of awe as his sister as he saw his dick spring forth.

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Sarah bent over to examine his cock closer. She had no boundaries now - not after Mark had fucked her senseless in the shower - and grabbed his cock with impunity. Her hand was gripped near the head, she held gently as she rotated her head around it for the best view possible. She heard Mark inhale sharply as she inspected his penis.

It was pale, all of his skin was in this body. The whole thing must've measured somewhere between a foot and a half and two feet long. The head and crown were cut, like the last body, but this body did put the other to shame. Even the balls were massive as well. She could've laid her head on them and taken a nap comfortably.

She took a finger and traced the length of the shaft. It had a single vein that ran down the side. It drove Mark a little crazy to have her run her finger across it. When she got to the head she gave it a closer look. It was big and a swollen pink, maybe the size of her fist. The whole thing looked liked a snake had its head replaced with a large red apple.

Sarah was once again in a trance. She wanted nothing more than to inspect, use, touch, lick, and kiss, and sit and stretch herself on Mark's new cock. It was magnificent.

She took a look at the bed and formed a plan. "Lay back on your pillows, now."

Mark complied.

When he moved to get his back to the bed, Sarah sat up on the bed and removed her shorts. She took her top off. She was bare naked down to her underwear now, wearing a cute little pink thong for whatever she thought today's occasion would be.

She crawled towards him on the bed. He had a hand on his third-leg of a penis and held it tightly as she approached. Her hair down, breasts on full display. Sarah was the image of pure lust. She grabbed his legs and then propped herself and her arms on his upper thighs. She was face-to-face with the monster now.

"I don't know a single guy I've ever seen that comes close. They didn't come close with your last body either, but damn."

Mark could feel the heat from every breath of her sentence on the skin of his new body.

"I've seen porn with guys nearly half this size. And that was supposed to be mega cock porn too."

She was admiring his manhood like you would a new car. Moving her head around it, keeping from touching it for the moment, driving her brother a little crazy before she started again.

"You know my last boyfriend, Johnny. He only came to abooouut..." she put the tip of her index finger up against the shaft, not even a quarter of the way up "here!" Her talk was driving him wild, feeding his ego with comparisons.

"I mean Jesus Christ Mark. I don't know how the fuck this dick is going to fit inside me. Maybe I'll just have to stick to using my mouth? Poor Mark, his sister can only use her mouth on his mega-dick." She made a face like a pout at him.

"Poor me." Mark replied with his head tilted back. His dick was more than just amazing for its size, the feel was more intense at every inch compared to his own, like someone packed more nerves per square than a regular cock had entirely.

"Mark, Mark look!" His sister beckoned him. "I can barely fit both my hands together around it."

Sure enough, both her hands were connected, but the tips of her fingers barely overlapped.

"Don't you think we should measure this one too?" Mark asked, his head tilted back.

"I think that's an excellent idea." Sarah replied. "Let me go find that tape measure. Don't go anywhere little friend ok?" She propped herself up on her knees at gave the head of his penis a smooch like she was saying good night after a nice date. "I'll be right back." She said to his cock rather than him.

Sarah got up. Mark had an amazing view of her ass that only made him agonizingly harder. He felt like each minute his dick continues to grow, breaking a record each time.

"Ok got it! Jesus Mark this thing has to be at least a foot and a half. You seriously have no clue how excited I am to measure this!" Sarah was having too much fun. For her this dick might've been a show at Ripley's for her personal enjoyment.

When she came back to the bed, she sat next to him rather than between his legs. She pulled the tape out and put the metal tip at the base, stretching the tape out past his head.

"16 fucking inches. I guess I was wrong, little Mark doesn't quite measure up to the two foot mark at all huh? Not big enough I guess!"

Sarah shot a funny look at Mark. He was quiet now, his head laid back and his eyes closed he looked like he was in pain. She realized this might be a different experience for him than it was for her.

She put the tape measure aside and got as serious as she could be for the situation. She leaned down and laid next to Marks alien head. "What's wrong dude? Talk to me."

"It's like, extremely intense you know? Like I can feel the air blowing on it it's so sensitive."

"Maybe I can help. I know what usually helps when someone feels sensitive. A kiss or two usually does the trick."

Sarah slid back down to the small man's waist and put her mouth closer to the gargantuan penis. She came close to his pelvis and placed a kiss right next to the base of the shaft. "Does that help at all?"

Mark still laid with his head back grimacing.

She planted another, finding the spot where pelvis became penis. "How about that?"

She worked her way further up the shaft, kissing his skin gently, finding an extra second on each peck with which to shower her brother with love. She kept her pecks close in distance while traversing her way up the shaft, counting over 16 times she had kissed his shaft in total before reaching the head. When she did reach the head, she used her hand to grab it like she was leaning on to kiss her boyfriend's cheek and gave it a longer and more heartfelt kiss.

Each kiss and each touch from his sister sent shivers up Mark's spine. It was like an overload of pleasure, something his brain wasn't built to process properly. For some reason he had no problem handling multiple arms and cock, but a dick this size and a body this small seemed like a complete mismatch.

Sarah took her mouth away from her new friend and turned her eyes towards her brother again. "Feeling any better now bud?" The sound in her voice was genuine concern.

"Honestly it's better but it's still fucking crazy, I don't know why it feels so fucking sensitive."

"Well in that case..." Sarah used a hand to hold the other side of his shaft, "...I think it's my duty to help relieve my brother's pain."

She planted both lips on the absolute tip of his head and gave it another kiss. She rose an edge off of it and gathered a thick glob of spit in her mouth, opened her mouth and let it drop slowly onto the head. The freak head was large enough that the spit barely encapsulated the whole tip. She gave it another go and let some more spit out. A string of spit went from her mouth to the head now, once again connecting her brother and herself.

She looked at her brother who was watching her through squinting eyes. She lowered her head again. Her lips were pursed in a kiss, and this time when she went for a kiss she let the tip into her mouth slowly, opening her mouth to let his gargantuan penis violate her lips.

She brought her head down further but quickly started struggling. The head was easily the size of a small orange and was probably longer than any penis than she had put in her mouth before. Would the heat and electricity that had developed in her before help her take the large cock now like it had helped her take the twin cocks of her brother's first body?

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