Spider Incubator – female spider/drider TF

Trying my hand at another choose-your-own-ending TF story.

Spider Incubator – FEMALE version

You undoubtedly have heard about this myth before - you unknowingly swallow an average of four live spiders in your sleep each year. Or some variation. Other versions of the myth say you only swallow twenty your whole lifetime. One says you swallow a whole pound of spiders – twenty thousand of them – in that same timespan.

These are myths, not based in fact. And, depending on how you look at it, thankfully this story is, too – I do not recommend reading on if you are a true arachnophobe.

It features a genetically modified spider. No, not like in Spider-Man. The unfortunate victim in today’s story does not just gain spider-like powers.

She becomes the first humanoid spider incubator. With transformative consequences.

It starts on a cold autumn night, and bugs are creeping into the cracks of homes to stay warm for the winter. One of these bugs is the aforementioned spider – several of these spiders had been set free the summer before by a scientist with a curiosity gone too far.

So far, the spiders hadn’t interacted with any humans yet – until tonight. This itsy bitsy spider would crawl up quite the different drainpipe, if you catch my drift.

Spiders already possess a strong sense of smell on their own, but this spider’s sense of smell had been altered to only smell one thing – the scent of an ovulating woman.

And in this house, this was the only scent present.

The female spider had successfully mated the day prior, and is seeking a place to deposit her egg sac – but she isn’t looking for a web.

The scientist responsible for these creatures has an obsession with splicing genes. Transforming humans into different species, speeding up evolution, and finding new ways to survive in changing climates. This experiment’s intended purpose is to create a human-spider hybrid.

The spider, drawn by the scent, crawls through a crack in the girl’s bedroom door. It struggles to find a way under the duvet, but eventually, the creature can be seen moving like a bump under the fabric, headed for its target.

It’s a miracle the girl remains blissfully unaware of the creature crawling up her pyjamas’ pant leg – though small, with its torso only being about an inch big, the girl surely would’ve noticed had she been awake.

This lady likes to sleep in the starfish position, in the dead centre of her queen-size bed. The fact that she opted not to wear any panties that night, made the spider’s entrance into her vagina all the easier.

She moans as the tickly, hairy creature vanishes between her labia majora, one leg at a time. Her back arches up as the spider walks inside of her, crawling towards its destination. She turns, her behind firmly pressed against the opening of the girl’s cervix, ready to begin pushing.

All through the night, the spider remains inside the girl, pushing out silk-covered eggs into her womb. And even when morning comes and the girl awakens, the spider keeps going – biting down into the girl’s vaginal wall and spreading its venom through her body.

Soon, the spider will vacate, and the girl’s transformation will begin.

Nausea and pain overwhelms the girl to the point where she decides to stay home from work – she assumes it’s period cramps, perhaps a little earlier than usual. The poor thing has no idea that a spider is grasping onto her, spending twelve hours inside her to fill her womb with its eggs.

Inside, the womb is responding as it should to a human egg – encapsulating the eggs into its wall, not realizing they’re the wrong type of egg. When the girl’s own egg reaches the womb, it simply joins its soon-to-be spider siblings…

…undergoing the same transformation their mother will.

It’s time – the spider has released its last egg, and is ready to leave – and the strange, tickly sensation that is the spider once again crawling around inside of her triggers the girl to head to the bathroom.

As she pulls down her panties – at least she put some on today - she screams in horror. She swats the spider out of her underwear, screaming at the top of her lungs. Had that thing been inside of her? For how long?

She feels like vomiting. But not for the reason she thinks.

For several days, she feels too ill to get out of bed – the pain has gone with the spider, but the nausea won’t let up. As the eggs grow, her stomach bloats further and further… spider eggs only take three weeks to hatch, and these are no different.

One week in, there is no questioning whether or not our poor victim is pregnant – she is yet to realize that the spider is the culprit, but this realization will soon click in her head. In the meantime, she is hiding inside her home, ordering food online, confused by and ashamed of her predicament. Her belly is large, round, and rock solid, with over five hundred eggs now the size of golf balls filling her womb.

The eggs, however, need more room to keep growing – and their human host has been stretched to her limit. At this point, she can barely leave her bed, and bending over has become impossible – she looks like she’s pregnant with quintuplets.

And the eggs still have several weeks left until they hatch. They’d started the size of normal spider eggs, but by the time they exit their human host incubator, they will be the size of basket balls… and a new species will emerge.

But first, it’s their host’s turn.

At this point, the girl is lying on her bed helplessly. She’s grown far too large to wear any type of clothes on her torso, spending her time naked beneath a thin blanket.

At this point, she’s unable to carry the weight of the eggs. They’re still growing, with hundreds of spinnerets growing inside of them. Soon, their incubator will expel them into an egg sac where they will continue to grow until they’re ready to hatch. But her body needs to evolve the ability to spin an egg sac first…

CHOICE: FULL GIANT FERAL SPIDER

An overwhelming sense of pain overtakes the girl. She claws at her bedsheet, and her knees pull up against her overgrown abdomen. She feels her back arching up, but not of her own volition – whilst her belly seems to be shrinking, something is pushing her behind upward. As she looks around, trying to see past the still enormous belly, she notices black hair is starting to rapidly grow across her entire body. Her arms, her belly, her breasts –  everything is turning dark with hard, stiff hairs.

She struggles to get the blanket off to see what is going on – her belly has almost fully shrunk down to its original size, but at this point, her legs are pushed upward in a ninety-degree angle, and if she’s pushed any further, she’ll crush her own neck.

An uncomfortable struggle ensues, and the girl falls off the bed, belly first. She crawls towards the door, finding her legs not cooperating – she shrieks as she sees her reflection in the mirror, and a gigantic spider’s behind has grown from her back. Her legs are growing, extending, not responding to any signals for movement whilst they undergo this change.

The girl pants, desperately wiping hair out of her face and watching the locks fall to the floor in clumps – one glance in the mirror reveals her hair is falling out, and there is nothing she can do to stop it – her cheeks, forehead, and scalp are now covered in the same dark hairs as her body.

Panicked breaths come from the girl’s mouth as she grits her teeth in pain – it feels like her skull is splitting.

She screams as the pain floods from her face across her torso; she hears the bones in her arms snap and break as new joints are formed, forcing her position to change – the flesh on her body morphs and tears as new limbs emerge from her torso, where her breasts have fully flattened out and vanished, leaving a smooth, round, hairy torso.

Spider-like jaws tear through the girl’s cheeks as she begs for the change to stop – at first she thought the blurring of her vision was caused by tears, but in the mirror, the truth revealed itself.

What stared back wasn’t a human girl, but a multi-eyed monster with vaguely human features – it takes a while for her to be able to fully discern what she’s seeing, as each of her eyes see something else. Her nose shrinks away as her neck shortens, widens, merges with her shoulders – her jaws puff, widen, and cover with hair as her teeth fall out of her changing mouth.

The spider pushes herself up on her now fully-formed legs, already forgetting she had been a human mere moments ago. She readies herself, and begins to expel silk from her silk glands.

Around what used to be her bed, she spins an egg sac, where the now basket ball-sized eggs roll onto one by one. This continues for hours, until the room is filled with eggs, all tightly secured by silk.

After dark, the new mother will leave her den – as will the other spiders that have come from this experiment. She will seek out humans to feed on, but those that manage to escape her or her children’s wrath with a mere bite will suffer the same fate as the unsuspecting girl had.

By the power of this one, little, innocent-looking spider, the transformation scientist’s experiment had been proven to be successful – and humanity will soon enter a new era.

CHOICE: DRIDER

An overwhelming sense of pain overtakes the girl. She claws at her bedsheet, and her knees pull up against her overgrown abdomen. She feels her back arching up, but not of her own volition – whilst her belly seems to be shrinking, something is pushing her behind upward. As she looks around, trying to see past the still enormous belly, she notices her legs are turning darker. She manages to reach her thigh with one hand, feeling the rough, stiff hairs that are growing from her legs.

Something is clearly moving behind her belly, but she fails to see what - the sound of bones snapping and breaking and flesh tearing sends panic signals through the girl’s brain.

She manages to make use of the momentum of her growth to propel herself off the bed, landing on all fours in front of her mirror -  but not the fours she was hoping for.

It seems she has grown two additional legs, right in front of her crotch – her ‘original’ legs are now attached to a large, black growth that is extending from her spine – undoubtedly, her womb and her eggs are moving from her abdomen into this new growth, as her belly shrinks in unison with the growth on her back.

The girl inspects her new legs, quickly deducing what is happening to her – as she does so, she finds she still has a human vagina – but that is not where her eggs will come from.

She leans on her new legs, moaning and panting in pain as the growth continues to push out, and once again the sounds of tearing flesh and popping and cracking bones are heard. Her legs are deforming, knees pushing upward, both halves extending in length – and two more pairs of legs are growing in-between. It is a terrifying sight to behold as the appendages slowly extend, folding out like horrific tent poles.

The girl had found herself rather lucky that her breasts hadn’t grown during pregnancy – but that was because spiders aren’t traditionally mammals – this species of drider, however, resembled a platypus – a mammal that lays eggs.

Her transformation nearly complete complete and her genes fully altered, the still-pregnant drider’s breasts swelled. A purple hue overtook the natural brown shade of the nipples and areolas as they grew. This change of pigmentation quickly spreads all over the remaining visible skin the girl possessed; finally, the hair on her head turns black, and the irises of her eyes turn fully white within a literal blink of an eye. Long, dark fingernails finished the look, and the first drider stood proudly within the formerly human girl’s bedroom.

She was ready to give birth to her children, sending humanity into a dark, new era they would not forget. Already forgetting about her former life as a human, the drider readies herself, and begins to expel silk from her silk glands.

Around what used to be her bed, she spins an egg sac, where the now basket ball-sized eggs roll onto one by one. This continues for hours, until the room is filled with eggs, all tightly secured by silk.

After dark, the new mother will leave her den – as will the other driders that have come from this experiment. She will seek out humans to feed on, but those that manage to escape her or her children’s wrath with a mere bite will suffer the same fate as the unsuspecting girl had.

She will be able to trap both men and women in webs, hypnotizing them to have intercourse with her – all it takes for a man to undergo the same transformation, is to come inside of the drider. A woman will find no adverse effects to simply having intercourse, but it is certain she will be left with a bite mark, triggering the transformation regardless…

By the power of this one, little, innocent-looking spider, the transformation scientist’s experiment had been proven to be successful – and humanity will soon enter a new era.