The Medusa worm was one of the more dangerous creatures in the Bug’s extensive and exotic menagerie of predatory fauna and flora. The insidious invertebrate possessing a sly intelligence that set it apart from its more instinctually driven ilk, as the creature had a cruel cunning not often matched in the mardy mare’s brood of beasts. Members of its species having a sly intellect, and a proclivity for tormenting their pony prey with an almost sadistic glee, as they revelled in the helplessness of their pleading victim's mewling attempts to escape. The more advanced annelid acutely aware of the paralytic properties of its vile venom, as if its captive were to get a bit too boisterous, all it would take was a quick nip in order for the potent toxins secreted in its saliva to petrify a protesting pony in seconds.

Spitfire finding this out first-hand, when she found herself snared in the slimy grasp of a particularly large specimen. The creature exerting a confident sense of control, as it coiled around around the curvaceous Wonderbolt’s heaving chest with a constrictive squeeze. The Pegasus barely able to let out an alarmed yelp, as her flailing feminine figure was restrained by the clammy caress of the serpentine horror that had wrapped around her with a stifling hug. This claustrophobic caress clamping down on her voluptuous frame with a succulent squish, as it restrained the buxom equine before she could really start to struggle. The look of terror in her eyes amusing the creature, as just from her fleeting floundering it knew there was no real rush, giving it all the time it needed to take full advantage of its hapless captive.

If it had been hungry, the outcome would have been quick for the wriggling mare, as it would have simply opened its flexible maw over the back of the pegamare’s cowering head and started to swallow. It of course would still do that in time, but unfortunately for the bleating mare, it had recently eaten, and as such had other more carnal needs to attend to, other than the simple need for sustenance. The worm mulling the energetic bucking of Spitfire’s gyrating hips for a moment, relishing the desperate sensation chaffing against its sensitive underbelly, as it always liked it when its food was feisty. The mare not going anywhere, regardless of how much its curvy conquest complained, leaving powerless Pegasi little more than a twitching treat for the worm to enjoy at its leisure.

Spitfire’s distraught defiance doing little to deter what the worm had in mind for the mare, as it could only pleasantly savour the way her fear puckered ponut and quivering pussy nibbled anxiously against the tips of its prehensile penises at the moment before it penetrated. The aghast gasp shooting from her lips in a lurching gust, as with a vigorous jolt the worm’s tentacle-like genitalia began to burrow into her more erogenous areas like a pair of lustful corkscrews. The oily cocks plunging into the mare’s clenching core with a girthy shunt, causing to hiccup when they slapped against the bottom of her unprepared diaphragm. Its rubbery shafts stretching her out painfully, as the creature sank into her inviting interior with an undulating slither.

The mare feeling as though she was being torn in two, as her ballooning womb and overloaded bowel felt as though it might burst at any moment, regardless of how much her guts spasmed in disdain. The length of Spitfire’s large intestine soon forming a noticeable protrusion through her normally trim midriff, as the Medusa worm wore her lower digestive tract like a snug glove. Its perverted progress relentless and unwavering, as soon she felt her small intestine begin to bulge, and then her stomach with a tensing convulsion, before gently beginning to ease up the final stretch of her now gagging throat. The lack of agency agonizing for the choking captain, as she could only retch ineffectually around the muscular appendage worming through her reeling innards.

The doughy mare feeling as though she was about to be sick, her chest burning with an uneasy shudder as she was effectively spit-roasted upon the substantial schlong ploughing her pussy and ravaging her rectum, leaving her feeling violated in a way that didn’t seem possible. She didn’t have long to dwell on her unbearably bloated belly though, as with a sharp prick, she felt a set of needle-like fangs sink into the soft skin of her neck with a stinging bite. The worm growing bored of the mare's incessant squealing and squirming, as with a single snap of its jaws the soggy snake injected its unwilling lover with a healthy dose of its personal poison.

Spitfire winching out an agonised grimace as she felt her delicate flesh instantly begin to go ridged around the gnawing wound on her nape. Meat, muscle and other soft tissues seizing as they spontaneously lapidified in a crystalizing cascade. The desiccating effects enveloping Spitfire’s head in the space of a few seconds, perfectly preserving the startled expression that flashed on the writhing mare’s flabbergasted face. The worm ignoring the frantic floundering that pattered out of the petrifying pony, as it was instead more focused on the pleasurable sensation of her lower holes, which even now were pinching against its twin cocks with a concerned string of flinching contractions that reduced the chubby captain to little more than a suckling sheathe to sate the worm’s sexual satisfaction.

The rippling palpitations reminiscent of a gummy gnawing, as the medusa worm began posing the rapidly fossilizing female, in a way it thought attractive in order to craft its ample prisoner into another sultry statue for its ever-growing collection. Spitfire’s back legs starting to jitter with a few uncoordinated jerks, as her nerves began to turn to stone. The swift process burning through her body like a fire, the fatty flesh yielding like bubbly butter, as it relegated the comely equine to just an alluring garden ornament. The mare’s Junoesque figure flash frozen in the suggestive stance it was shagging her in, as the worm intended to keep its feminine feast fresh until the time came to consume her. The tempting yellow tooshie it was roughly rutting changing to the colour of cement with a drying crackle, as in the space of a few lustful pumps Spitfire was rendered down to just another full-figured lump of rock languishing in its larder, where it would patiently remain until the ravenous worm grew peckish, and decided to thaw out the petrified pony so that it might stuff its stomach with another filling meal of marbled mare meat…..

.........

During a training jog, Spitfire crossed paths with a rather horny Medusa Worm, that which more than happy to show the pneumatic pegamare the effects of its petrifying venom.....

A more exotic petrifying collab between me and Crazy ( https://derpibooru.org/profiles/Crazy+Water ). This one featuring a Medusa Worm having its way with an unwilling Spitfire...

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https://discord.gg/cVeAghu

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