“Go on, Anonymous. Take her.” Cloudy’s tone was beginning to build in menace.

The fear in Anon grew, paralyzing him further. What was he supposed to do? Why couldn’t he remember? His instincts were screaming one thing - his fears screaming another… think, think! His heart raced.

“Here, you dolt. I’ll help.” Lime growled sliding in from his right and wrapping her hoof around the mid-part of his cock. Anon caught the mare blush slightly as she did so, her hoof clearly taking an extra squeeze or two to explore the rod of flesh in her grasp.

“B-big…” She whispered under her breath.

“Thank you, Lime.” Cloudy nodded.

“Big… dumb animal doesn’t even know what he’s doing.” Lime grunted, pressing her chest against Anon’s back, reaching around from behind to point his cock in the correct direction. “I wouldn’t let him hurt my baby-sister.”

Anon could feel her heart thumping through her ribcage as she moved him closer to Marble, her hoof not able to fully wrap around him as she angled him downward, uncomfortably forcing his cock to angle downwards against the incredible stiffness of his blood-engorged sausage.

He could feel the heat radiating off of the little mare under him now, waves of warmth coming from the quivering docking port that Limestone was inexorably moving him against - her tight, little asshole. Until finally, perfectly… his tip kissed the center of her ring.

“Mmm!”

“Unm…!”

Human and pony alike groaned in pleasure.

Immediately, Anon could tell this was not the right hole from a biological standpoint. He’d done ponies in the ass before, sure… but this was… this was like trying to thread a firehose through a sewing needle. His cockhead was easily wider than the whole of her ponut-ring, let alone the tiny aperture at its center.

There was no way this was going to fit.

And yet, the insistent and subtle push of Limestone’s body against his, his burning and unquenchable need to stuff his orgasm-ruined penis into something and most of all… his need to ensure that he met his mistress’s every command, pushed his cockhead with increasing intensity against the little mare.

Marble squeaked and groaned in response, sinking deeper and deeper into the pile of cushions and eventually the top of the bed itself, as the pressure between cockhead and tailhole increased.

Anon groaned, even his blood-stuffed cockhead started to mash outward under the increasing pressure and the unyieldingly tight rosebud of Marble’s ass. Her ponut squished and strained, the thick ring slowly thinning and unrolling as bit by bit of his tip ever so slightly started to spread her.

“F-f-fandango you’re sister’s tight…”

“Don’t be such a little bitch, Anon.” Lime hissed into his ear, nipping at his lobe.

Cloudy strode over to the three, observing from one side as human and pony pushed with all their might to slide into Marble’s sweet bottom. Anon could see her eyes darting here and there, observing each little quiver and move, every coiled muscle, like a master conductor overseeing her orchestra.

“Mmm… mmaa…mama…” Marble whined, staring up at her mother plaintively.

“Good girl, Marble.” Cloudy smiled warmly down at her, “you’re trying very hard. I’m proud of you.” The stately mare leaned down and planted a tender kiss on her daughter’s forehead.

Almost as soon as the lips toughed, Anon felt the impossible squeezing vice-grip around his cock jump and clench, suddenly releasing just a fraction of the resistive force that was barring the barbarian cock from breaching the impenetrable wall of Marble’s anus.

Cloudy’s eyes flashed as she noticed the effect, she quickly shot a wry grin at Anon before turning her attention back to her youngest daughter.

“So.” She planed another kiss on the forehead, eliciting another tremble. “Very.” Another kiss, this time on her snout. “Proud…” With this last word, Cloudy slid her mouth down to meet her daughter’s, opening her lips to plant a deep french kiss over her gasping muzzle.

Like a lightning bolt hat hit her, Marble’s back went completely stiff, arching away from her platform of pillows. Her legs thrashed out wildly, her eyes shot open, showing those telltale, crazy pony-pupils: two heart-shaped purple symbols of wildly different sizes… and her puffy, exhausted pussy exploded. Flashing pink and grey like a strobe light, Marble’s small pink clitoris winked in and out of her swollen lips like a whack-a-mole game gone haywire. Torrents of boiling, steamy clear spatter shot against Anon’s lower belly, in gush after gush after gush.

Marble could only silently scream into her mother’s mouth.

Anon could only marvel: this quiet filly knew how to orgasm.

That’s when he slipped in.

Instantly, the elastic band of Marble’s ponut slid over the wide, mushroom flare of Anon’s cockhead, snugly grasping the underside and pulling more of his fat tip into he lava-hot anus… the heavy, pushing force of Anon and Marble quickly started to stuff the little pony… with inch after inch slickly grinding into her ass, until Anon’s increasing girthiness finally prevented him from going any further.

Hot.

Tight.

He was only a quarter of the way into Marble’s tailhole but the sensations of grasping, clenching heat from the mare’s impossibly tight sphincter was unlike anything he had ever experienced - truly this was new ground, virgin territory, that he was breaking into…

And he wasn’t going to last much longer. He’d already been pumped to an agonizing ruined orgasm by Marble’s mom - his throbbing bell-end was so primed to pop he was shocked that he’d lasted through just the attempt to penetrate Marble’s balloon knot. Now he was inside that raging furnace of quivering, clenching, squeezing, rock-strong muscle-having, flesh… If he thought his head was being smushed trying to push into Marble, it was nothing compared to the clenching power of her buttocks now that he was in her.

“Mmmwahh... Ohh…. f-fuck! FUCK! M-my f-f-fucking asshole!” Marble’s mouth broke away from her mother’s embrace, thrashing wildly. The half-insane mare swung her head crazily left and right, throwing her sweaty mane all over the place with intensity, her eyes rolling and googly, Anon had seen it before - ponies lost to the overwhelming waves of lust… it seemed that pony-mare’s minds were not well-adapted to the levels of pleasure that he could give… they all seemed to go feral, bestial, primitive when they orgasmed on him.

But to see it happening in such a sweet, quiet, shy thing like Marble… and to hear the absolute stream of filth coming from her usually tight lips… that was something else.

“O-oh yyYESSS!” Her throaty growl echoed off of the bedroom walls, the volume, and intensity making it clear that her last concern was the fact that her sister, mother, and father could hear her losing her mind. “M-my f-f-fucking asshole is f-fucking b-burning… SHIT… it’s so fucking hot! Anon, ANON, ANOOONNNggggggGHGHH!”

Her groan became another shudder and convulsion, her moan coming out as long and thick as the mare-cum that streaked from her clenching love-tunnel to splatter all over Anon’s shaft.

Anon dug his fingers into Marble’s hips, clenching like a sailor holding onto a life ring in the middle of a storm - terrified that he might be swept away in the turbulent and stormy sea… or in Anon’s case, worried that he might loose his fat load.

“Y-YESH YESH YESH YESSSS!” Marble’s groans rattled the windows. “Give it to me! Please!” The mare’s hips bucked up and down off of the bed, bouncing the cock inside her tantalizingly - it was an impossible task to stuff any more of the massive human phallus inside of her tiny rear, but she was trying her heart out.

Sweat dripped from Anon’s brow, every muscle in his body straining like mad to prevent himself from losing control of his restraint. He barely saw Cloudy pinning Marble’s thrashing shoulders down, before sternly nodding at her other daughter.

But he did feel LImestone’s whisper at his ear, her soft breath whispering into his ear canal. “Give it to her already, you wuss… you know you want to…”

Anon grunted, still resisting, before he felt Lime’s gray hairs brush against his side, as she dipped her head down and around his left hip, extending her tongue and wrapping it around his exposed shaft, curling around it like a wet, pink, snake coiling around a fat salami.

“Oh… oh, f-funktown!” Anon moaned, feeling his hips start to buck involuntarily. The different heats between the two sister’s two wet, coiling, powerful organs milking him at the same time… their two juices coating him in such exquisitely contrasting ways… it was all too much to handle: Limestone milking him to cum into her little sister’s tailhole.

Then Lime’s hoof came underneath his buttocks from behind, grabbing his taint and pressing upwards, massaging right underneath his balls, pressing those two swollen organs out of the way so that she could push against the sensitive flesh right over the top of his engorged prostate.

Anon’s eye’s briefly flashed down to the grey mare, seeing the mischievous triumph there. Sparkling eyes and a nasty grin conveyed what the dick-licking miscreant already knew: he was going to cum.

Buckets.

It was like she’d squeezed a swollen water balloon with the knot untied. Anon felt a pulse of explosive, thick, boiling semen racing from the mashed seminary gland, bulging up through the shaft being milked by LIme’s tongue, bubble through the tight seal where Marble’s ponut had managed to slide down to… then burst from his fat cockslit into Marble’s ass.

“OH OH OH! YES YES… THANK YOU MM… MMMM... Mmmm…..mmmhmmmm….”

With each rhythmic pulse of heavy sperm spurting into her asshole, rope after rope of goopy manbatter splattering into her taboo, Marble’s manic excitement began to cool, her heartbeat slowing as she melted into a pool of contentment like her body was absorbing the stud-juice through her rectum, a panacea to satisfy her burning needs as a mare.

Anon was in heaven, the relief and wash of pleasure at pumping spurt after spurt into the tight mare’s ass beyond anything he could have hoped for. His tongue hung from his lips, and he had trouble focusing. He was so enraptured he barely felt his cock sliding out of the tight little gray asshole, sending it’s final spurts up across Marble’s winking marehood, through the valley of her diminutive teats, and across the muzzle of her still fellating older sister, in thick, heavy ropes of jelly-like ejaculate.

“Oh...Oh… shoot…” Anon groaned out, his last dribble slipping from him as weakly as his hands slipped from Marble’s hips, before he fell backward onto his back in a sweaty pile, his heart throbbing in his ears, sweat pouring into his blinking eyes.

He only just heard Cloudy Quartz. “I can see you like his taste, Limestone.”

“It’s… hm… not bad.”

“The way you’re slurping it off yourself and licking it from your sister’s tailhole would say otherwise.”

“M-mom!”

“Leave her now, Limestone… Let me see to her and get her situated. If you want more… you’ll just need to get it from the source.”

“Oh, is it my turn then?” Even Lime’s gruff voice couldn’t hide the rising excitement there.

“Go on - I expect you’ll need to prepare him first.”

Anon saw Limestone’s cum-covered face appear in his vision as he stared up at the ceiling. With a slurp, she cleaned the last sticky strand from her cheek, then smiled naughtily down at him.

“Oh, I’ll prepare him all right.”

Author's Note

You could put a lump of coal in Marble's backside and it would come out as a diamond! I can only imagine how Anon's manhood would fare!

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