Invasion of the Tentacle Monsters Chapter 1

Story by RabidRabbit on SoFurry

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#1 of Invasion of the Tentacle Monsters

Aliens from outerspace! They've crashed here on earth, single and ready to mingle! Tentacle and goo fun all around!


Okay....So I'm out of practice and it's been a few years and I've also had a lot to smoke today. But I've got off my lazy ass and tried to write something after five years. So here goes one of the many half started stories about my favorite things. Standard adult entertainment warnings here: please be of adult age and not to be offended by homoerotic acts or adult fantasy. If you are alright with that, please proceed. Construtive comments, grammar correction, and thoughtful suggestions are welcomed.

Invasion of the Tentacle Monsters

Chapter 1- Learning

A brilliant light streaked across the night's sky as the protective shell started to disintegrate into its base elements in the earth's atmosphere. It was late at night, in the small valley town of Ashenboro when the entity made a crash landing into a wide creek that empty into the lake behind the house of a local plumber. As the contents of the now paper thin shell spilled out into the water, its transparent body blended in with the trickling water flow. It slipped down stream lazily till it washed up near the edge of the house's backyard. The entity stopped and attached itself towards a local source of heat and pull its way towards the origin.

Ted slammed down the last of his beer as he pissed in his back yard. The middle-aged horse grumbled to himself as he continued to relive himself. "Damn if I'm not pissing like a racehorse." He could barely see his soft member past the bulge of his beer gut. Ted remembered when he was a race horse in high school. Back then his shape was much more taught and lithe before he hit twenty, then all the weight started to slam down. The stream slowed to a trickle before he gave one last shake. Suddenly something cold touched the tip of his member. Startled by the experience, Ted fell backwards as he tripped over his own foot.

All Ted remembered was stumbling backwards and hitting his head on the patio table and blacking out. As the horse laid there, the strange gelatinous creature that had started to engulf the end of his member, probing the source of heat began to seek refuge in the warmest place it could find. The clear slime began to press into the tip of the horse's member. Slowly it pushed its liquid like body down into the host organism. Quickly adapting to the endothermic environment, the creature spread its body deeper.

About a gallon of slime disappeared into Ted's cock. The goo bulged on the underside of his pink and black shaft, moving down into his testicles. Slowly the goose eggs sized orbs began to swell, filling with the alien creature's body. The slime continued to ooze and fill the horse's bladder and began to secrete chemical compounds into the local tissue, altering them on a cellular level and adapting their host to the creature's needs. Exhausted after making itself a home inside the mammal, the creature needed to rest.

Minutes later the horse woke up with a shiver. He had been out long enough to feel the chill of the night's air. He rolled over and made his way back into his house. Rubbing the back of his head and trying to jog his memory. The horse concluded he must have just been too drunk and stumbled. He threw himself onto his bed, the bathroom door was lit with his roommate still occupying it. The whole reason he had to take a leak outside in the first place. Ted knew he couldn't afford a place on his own, and he had no other complaints about his roommate other than the husky's extended bathroom usage at night. "What the fuck does he do all night?" he grumbles and makes his way to his bedroom.

Ted took off his pants and undershirt before sliding into his soft bed. He fell asleep soon, his vision too blurry to stay awake. The creature inside his loins sensed its host had laid down, it began to pump more altering drugs into his blood stream. The equine had tossed and turned the rest of the night. His body was on fire as his temperature rose into a mild fever. As he laid naked on the firm mattress below, his sheath began to thicken and swell as his groin changed. The ooze began assimilating the genetic material of its host and began making radical alterations. It rooted itself into the horse's hefty sac and formed microscopic tendrils into his goose egg sized orbs. Slowly they began to swell larger over the night.

The organism made changes to the horse's organs to accommodate its size with room for growth. As it continued to learn more about its host, it tapped into the nervous centers and gathered awareness about the planet it had landed on. After an initial inspection, it determined that it was suitable for its primary mission. To spread and reproduce with any compatible beings. Starting with the host, the slime needed to develop methods for reproduction and assimilation. With the closest resource at hand, the equine's seed made the perfect medium.

The first experiment of the creature's alterations was forming as a small bump wiggling along the tight skin of the horse's scrotum. Slowly the lump began to swell increasingly before it disappeared as it approached the perineum. The mass migrated into Ted's prostate. At this point it was the size of an almond as it pushed, squirmed, and flailed. Tickling and massaging the insides of the sensitive organ, Ted let out a soft moan in his slumber as his more than plum sheath began to fill out.

The head of his horse flesh flopped out of the opening. Already forming a mild flare as his prostate was assaulted from inside. The creation started to form a new appendage as it continued to grow. Now the size of a large grape, it extended a tendril from one end of its main body while tapering the opposite end slightly. It took on the same of the cells that it was created with and started to make it past the tight squeeze of Ted's prostate. A surge of precum from the stimulation built up the pressure behind the alien seed creature and began pushing it towards the exit.

Ted was a large draft horse and had the bits to match. His cock usually stood at eleven inches, full mast, but the creatures secretions had already altered his spongy flesh to be thicker and longer than before. Now slapping him softly on his cream fur covered beer gut while pre started to leak above his navel. The thing started to bulge the thick underside of Ted's cock as it traveled down his urethra. As it wormed its way down towards the tip, Ted suddenly flexed. His head flaring as a small burst of cum shot out with the mass.

It landed on the floor next to the head board. The creation looked like an oversized sperm cell. The creature had modeled this extension on exactly that. The purpose of this seed was to seed out and fertilize another compatible organism, replicating, and evolving slowly as it forms new extensions. It wormed its way along the floor as it slipped out from the gap below Ted's bedroom door. Its slick body slithering like a flatworm as it explored the hall way. Having the ability to seek out another source of warmth, the entity made its way to the bathroom right across from Ted's bedroom.

Lance was in soaking in the tub. The husky enjoyed being able to float in the extra-large tub made to accommodate Ted. The smaller mammal not only could float but squat down with his head above the water. This was useful for being able to slide down on his toys. The black and silver husky often waited till late night to enjoy his silicone replicas. The truth was he imagined the horse shaped toy poised below his rump was Ted. The husky couldn't help but fantasize about his larger roommate.

They've lived together for only a few months after the land lord arranged their meeting and their schedules and job history made them excellent roommate. Lance had no clue whether Ted swung that way or not and it had never come up in their conversations. However, Lance had been smitten since they met. Ted was a blue collared, rugged, and a bit on the heavy set side. Exactly Lance's type. The husky closed his eyes as he spread his cheeks and slid down, feeling the tip of the unflared stallion shaft start to press against his ring. After gently grinding against the toy, the tip began to spread the pink star. With an inaudible pop, it slid under the dog's tail inch by inch.

With tongue lolling to the side, Lance moaned softly as he took the entire length of the toy slowly. Having already played with a few other toys earlier, there was only the slightest of resistance. He gently pushed down until he could feel that fat head press against his prostate. The dog was in heaven as he just ground himself into it. His knot already thickening quickly as he couldn't hold up much longer. Lance wrapped a paw around the base of his sheath, the gray fur pulling away to expose the entire knot.

The alien sperm continued to wiggle its way into the bathroom. It could immediately sense the increased humidity and heat source that was the bathtub. It crawled along the tiled floors, covered in a slick coating of slime made it easy to propel itself. Hitting the side of the tub, it learned the slick coating was bad for climbing the side of the tub. The seed began to alter the film to be stickier like a mucus. Soon it found it could inch up the side with some difficulty being such a large tub. Finally reaching the lip, the extension slipped into the water. It immediately tasted the faint protein floating in the water with it and made its way to the source. It found a thick source ahead but decided not to repeat its previous assimilation tactic. Instead it drifted lower.

With a low howl, Lance came into the sloshing water of the tub. Catching his breath, he panted and waited for his knot to return to normal. Slowly standing up and dismounting his toy, the husky leaned back against the head rest and let his body float there. His eyes fluttered as he imagined Ted snuggled up against him after grinding and busting one inside the dog. His stretched ring quivered as he reflexively clenched it. Timing it just right, the mutated cell rammed itself into the husky. His passage was lubricated and relaxed, allowing it to slip easily into him. Lance couldn't distinguish the tingling in his well-used hole from the alien that just invaded his body.

With the seed planted, it began to root inside the husky as he cleaned up the bathroom and got ready for bed. He let out a long yawn before draining the tub and drying off. After brushing his teeth, he left to his bedroom at the opposite end of the hall way. He put away his toys into his drawer and flopped on his soft mattress. He felt incredibly fatigued suddenly and couldn't keep his eyes opened very long as soon as his head hit the pillow. The alien had already started making changes to the dog, finding this being just as compatible as the last. It began to form itself into a new organ, integrating with all the surrounding tissue to be as noninvasive as it could as it experimented.

The new data had to be returned to the original body for further assimilation and study. It would have to perform a new trick to get this info back. A mass began to form, made by some conversion of body fat and gel from the alien. Imbedding the information in to this new creation took most of the night. The husky groaned as his belly formed a large lump by the time the sun began to rise. As the dog rolled onto his belly in his sleep, his tail lifted and curled upwards as he dreamt of something happy. Wagging his tail, he didn't feel the egg push out with a wet slop, rolling over his sheets and onto the end of the bed.

As soon as the first beams of sunlight poked through the cracks of the window blinds and struck the side of the egg, it began to stir. Slowly pulsing till the walls popped like a delicate soap bubble. The new creation took on the form like an octopus. Instead of sac shaped head, it had two round protrusions, similar shape of the husky's swollen knot. It formed several thick tentacles from the base and began to pull itself along the ground. With its gel like nature, it flattened itself and squished underneath the door and back across the hall. Moving to its former home and parent mass.

Ted laid there motionless. His cock bobbed a few inches above his chest now. As thick as his wrist with balls the size of melons now, the accommodations for the alien inside his loins were complete. It had learned to reproduce hormones and stimulants to affect its host as it continued to decipher the nervous system. Sensing the extension nearby it flooded the horse's blood with melatonin maintain a deep slumber. The crawling mass made its way along the horse's nightstand and down his bed. It slid along his side until it reached his thigh and climbed upon his crotch. The tentacles wrapped around the stiff member and pulled itself along to the flared head. With one prodding tentacle at the opening, it began to push itself in, the slick coating allowing it to push several inches down with ease.

The black and pink spotted underside of Ted's shaft bulged unseemly as the thing pushed its unnatural body into his enlarged shaft. The sensations were playing havoc with Teds body. His hips began to thrust on their own and the creature began to worry that its control was slipping. The last tentacle slurped down his slit and it pulled itself deeper. The alterations allowed it to return to the parent mass waiting in the grossly swollen orbs. The arms of the tentacles could be seed against the taught skin as it pulled itself back down and began to merge back into the pulsing orbs. Had Ted's prostate and testicles not been altered, he would have came at least twice from the sensations from his nether region.

The entity drank in the new information and began to plan for spreading itself to others. It continued to study the horse's body and learned more about how Ted lived day to day. Finding subtle ways to accomplish its goals without giving itself away. It had to remain discreet while it continued to evolve. It found the simpler shape it could take, the easier it was to produce extensions of itself to seek out others. By the time Ted and Lance normally woke up, the alien was ready for its next move.

Knowing Lance's desires for Ted and just now learning how to alter pheromone production and stimulating certain kinds of stress, the alien began making the appropriate chemical alterations and prepared itself to meet up with the creature that had made its home in the husky next door. Ted groaned as he woke up, his painfully erect cock greeted him. Ted seemed to be oblivious to the size of his cock, feeling the need to relieve overcome any other thought. Suddenly his nostrils flared and he smelled something the drove his instincts to mate into the red zone. Letting the primal behavior take over, the alien left Ted altered to respond to Lance's scent. The horse groaned and pushed himself out of his bed as he followed the smell outside his door. He drowsily pulled open the dog's unlocked bed room door and stumbled in.

Lance rubbed his eyes as he heard Ted enter. "What the hell?" he groaned as he tried to sit up. His body still fatigued by the changes the alien entity had continued to make inside. "Ted? What are you doing in my room dude?" the husky asked as he watched the chubby horse stand there, nostrils flaring as he appeared to be taking in deep breaths.

"Lance...I've seen the way you look at me," Ted said, feeling nothing but sudden lust for the dog. When they moved in together, he thought Lance was cute, just a bit on the lean side that his usual tastes. Also like Lance, he never got the courage to ask outright if the dog was bi or gay. Ted usually brushed the glances he caught of Lance looking at him as coincidence, but now his hormones were flared up and with his mind still half asleep from the alien influence, he let his inhibitions speak. "Tell me I'm not wrong here. You like what you see right?" he asked as he flexed his cock, letting the meat slap against his chest softly as the dog's eyes grew wide.

The alien inside of Lance caught on quickly and began to alter his chemistry, making him more susceptible to Ted's advances. It didn't take long before Lance started to feel a need burning inside him. It was like a fantasy happening. Everything seemed a bit blurry as he felt his head spin. The dog fell forward, rolling his hips around to stare back at Ted. "You have no idea, stud," Lance lifted his tail as he felt like his body was in a daze, almost like it his body was on auto pilot and he was just along for the ride. Ted wasted no time trotting up to the husky and cupping one of his round ass cheeks in his hand while the other pushed his monster rod at the dog's entrance.

Slimy pre started to spurt out like Ted was having a mini orgasm as his head pulsed and splashed the slickness inside Lance's ring. There was barely a pop as Ted buried the first quarter of his cock into the husky's backside. Both began to moan deeply as their bodies seemed to move together on their own. Ted's arms wrapped around Lance's chest as he panted hard. The horse pulled the dog further down on to his enormous member and just held him as they ground their hips into each other. Ted's hefty sac swing and clapped deafly against the husky's fluffy thighs. Ted felt his orgasm rise faster as the alien began to some of itself though the horse's cock.

A thin tendril slipped out of Ted's slit as it made contact with the mass inside of Lance. They melded briefly and instructions were exchanged and the next part its plan was hatched. The seed inside of Lance would need more material, and at the rate Ted was going, it wouldn't be long before it got its delivery.

Moaning deeply into the husky's ears, Ted continued to slap his melon sized balls against the dog below him. Lance cock leaked a small puddle beneath him as the horse continued to pound into his colon. He could feel every bit of it inside now, he could feel Ted's head begin to flare as the horse squeezed him tight. Ted's belly pushed against Lance's back and they fell forward as Ted's entire body shuddered. A torrent of slime and cum jet forward into the husky. Rope after rope, the hot stream filled Lance's insides and accumulated with the alien's mass inside him. They stayed like that for what seemed like ten minutes before Ted's member began to shrink back to normal. They both laid on their sides panting, neither believing what they just did. Then, just like they both feel unconscious as the aliens continued spread their influence inside these two and then much more.