“And now starts the real show!” Trixie shouted. She wasted no time at all in kicking things off. The audience had come to see a show, and indeed she would cum to give them one! “For her first trick, The Great and Productive Trixie shall give her milky, cow-like assistant a belly to match her udders!”

Fluttershy squeaked and stepped back at the sound of that, her eyes wide as saucer plates. “Oh… oh, my…” The more Fluttershy thought about it, the more flustered she felt. Every pony watching seemed to like the sound of that an awful lot. An awfully awful lot! Taking Trixie’s tremendous cock like that, to be rutted and filled so completely in front of the whole town… How embarrassing! Just imagining it made her squirm. A gentle warmth filled her, every eye on her like a hundred little pinpricks on her sensitive skin. She was breathing hard; panting, almost. And sweating, surely. This must have been her worst case of stage fright ever! “A belly that big? Are you, um…” She fidgeted ever so slightly. “Are you sure you can do that to me, Trixie?”

Trixie paused in the middle of her pre-workout stretches to give Fluttershy a look the pegasus certainly wouldn’t forget any time soon.“Quite sure.”

“Oh,” Fluttershy murmured. “Because I don’t mind if you can’t… Really! You aren’t as big as Twilight, but hardly anypony is, so you shouldn’t feel-”

“Really now, Buttershy. You’re just lucky you need that mouth for something pertinent, or I’d sew it shut! Trixie only requires your mouth for one reason, and it is not to talk.” Her nostrils flared suddenly, eyes ablaze. “And she does not care a whit for your silly thoughts, either; still less for your mismeasurements!””

She looked over her assistant with not a small amount of disdain, disappointed that this was the best she had managed to find. When every other fillable belly in town had refused - refused! - her generous offer to share a stage, she had been forced to pick the only pony who wouldn’t, couldn’t say no.

Trixie knew the meek, yellow pegasus was one of Twilight’s friends, although she couldn’t imagine why: the melon-breasted mare couldn’t even sit still for shivering so often. One might have thought the poor, jiggly wretch was cold, if not for the ample padding of her figure. A single glance up from her quivering thighs to the great, wobbling tits that dominated her chest told Trixie the real truth. “Aha! I see what your problem is, now: confidence! You wish to hide from the attention your body commands, instead of embracing it. Assert your stage presence! Goodness knows, you certaily take up enough space at the front, so why not act in proportion to your assets?”

But at this Fluttershy only whimpered and attempted to retreat further into herself. No amount of motivational shouting, it seemed, could get Trixie’s assistant to accept the audience’s gaze.

“Oh, well...” she sighed to herself. No matter; all this assistant really had to do was expand with the volume of Trixie's incomparable talents! She gave her trusty magic wand a pat, a proud grin on her face as a musky blob of precum burbled from its tip. “Thankfully, Trixie has more than enough to share.”

Using her magic, Trixie summoned a tall wooden box. She sat atop it just like she would her own personal throne, the very throne she would have made for her royal rear end once she finally beat that trifling fool Twilight Sparkle. Her cerulean blue nuts, so heavy and full with the greatest seed in Equestria, looked all the bigger as they squished up between her legs; twin bowling balls, churning and swelling so big they threatened to overflow her own thighs! “Oh, yes…” Thoughts of Princess Twilight filled her mind as she readied herself for the coming show, that taut purple rear bent over and begging for a well-deserved plowing by Trixie’s far superior cock. She danced her fingers over the shelf of her medial ring, teasing and taunting her towerlike shaft to full hardness. “That will be delightful.”

Fluttershy, struck dumb, could only watch as Trixie’s already impressive cock engorged itself on such egocentric fantasies, her gaze following every bob and sway like a serpent following the snake charmer’s flute. It was mesmerizing to watch, its gentle, throbbing growth lulling her into a soothing cocknosis. Every idle pulse seemed in tune with her own beating heart, a slow, sensual rhythm that beckoned her forward. Goodness, it looked so plump and needy, she just had to cuddle it! The poor thing was starving for attention, just drooling for some kindness! It would be positively cruel to leave such an adorable cock all by itself, without a warm pony’s enthusiastic embrace to keep it company...

“Assistant!” Trixie huffed. A snap of the fingers broke Fluttershy’s trance. “Your magician requires you in order to perform this trick. Step closer.”

“Oh! Yes, sorry…” As the owner of that compelling cock commanded, so Fluttershy obeyed. One shaky hoof followed after the other, stepping closer, and closer, and closer still… until the fat, oozing flare of Trixie’s caught on the scandalously low neckline of her leotard, making itself at home. “Meep!” A simple, arrogant bob of that monstrously thick pole was all it took to drag the straps down around her slender shoulders, freeing big, jiggling tits with triple the heft of her own head from their oppressively tight prison. She shivered as a warm, oozy wetness spread over her, a musky marking that sent shivers and tingles and sparks down her spine. It felt… good. Better than good, it felt wonderful! She let the feeling fill her, a simple, satisfied smile on her face even as the ponies in the audience hooted and whistled at her embarrassing exposure.

“Well?” Trixie narrowed her eyes and tapped her cock impatiently, glazing Fluttershy’s breasts with a slippery coating of precum. They were so soft, so big, so pillowy. A perfect cradle for her awe-inspiring shaft to get cozy in, and no lack of fatty Flutterflesh to claim as her own. The more her idle assistant teased her and taunted her, the closer her great and pleasurable orgasm drew. “How much clearer must Trixie make herself? On your knees, Assistant!”

Trixie planted her hands on her hips, making a few more lewd thrusts of her hips. She had a grin on her face that Fluttershy recognized all-too-well from her schoolyard days’ bullies.“It won’t suck itself.”

Thank goodness it wouldn’t! Fluttershy hardly wanted anything more now than to taste, to suck, to kiss that heavenly hunk of meat between Trixie’s thighs. Her whole world seemed to narrow down to just that one gorgeous goal. She knelt down slowly, a half-silly smile spreading across her face as Trixie’s tip pressed against her, trailing a line of slimy arousal up her neck as it slipped inexorably toward her chin.

“Hey!” Trixie winced as Fluttershy’s tremendous bust settled over her legs, squishing gently but firmly around her thighs. If she didn’t have her assistant right where she wanted her, Trixie might have thought she was the one trapped. She could hardly move, pinned as she was between those twin boulders. Healthy pink nipples, grown big and fat on the plentiful swell of her tits, trembled invitingly, dribbling little streams of milk over her leggings in their need for attention. Hmph! As if that was her duty.

Well, Fluttershy would have to wait till after the show if she wanted her aching chest suckled on... Trixie was here to be sucked on like a lollipop, and not a single thing else. She leaned herself into the inviting caress of Fluttershy’s bosom, luxuriating in their soft, furry touch. “Ah, oh, yes! Very good, pet. Trixie is nearly there!”

Nearer than either of them could have guessed. “Glk!” The very moment Fluttershy’s lips closed gently around the moist, musky head, her cheeks bloated outward as a rush of milky white cum flooded down her throat. It was actually only thanks to the anchoring mass of Trixie’s plate-sized flare that she wasn’t forced off by the pressure of such a tremendous orgasm, her mouth caught on cock like a fish on the hook. Fluttershy’s eyes widened, delight and shock warring as an endless flow of salty, sexual tastes flooded her tongue; her throat barely swallowing down cupfuls as Trixie pumped in quarts. Plenty ended up in her stomach, a warm, jelly-like mass that filled and satisfied, but plenty more precious seed was lost as it leaked and dripped from the edges of her mouth. A tragedy! A travesty! A hindrance to victory!

“Really, now? Must Trixie do everything herself?” The voice from above grumbled. An imperious hand reached roughly around Fluttershy’s head and pressed down, urging her to swallow more and still more of that tremendous dick, until it was in deep enough to pour piping hot cum straight down her gullet. A direct line from source to container, enough piping hot cum to fill Fluttershy’s distressingly empty tummy without fear of waste. “There. Keep it that way!”

And so Fluttershy did, bobbing obediently up and down on Trixie’s poor, once-lonely cock, but never letting it leave the mothering embrace of her throat. There was plenty of flavor to be suckled from the shaft, her tongue dancing playfully over the thick, throbbing rise of Trixie’s veins. Every long, undulating slurp seemed to provoke it to shivers and shudders of pleasure, pumping bigger and bigger loads down the bottomless hole of her gullet. Fluttershy was like a calf at her mother’s life-giving udder, nursing and suckling to sate her desperate hunger for cream. Her cheeks bulged as she gulped down the thick rim of Trixie’s medial flare, her jaw stretched to its limit as more cock shoved its way in than could possibly fit.

“Well. It’s adequate, I suppose...” Trixie yawned and reclined languidly back in her seat, already bored. Despite all the efforts of her fleshy pegasus partner, the experience was hardly anything to write home about - save perhaps a ‘How Not To’ advisory. What a pitiful, unpracticed throat! Totally unsuited to swallowing everything Trixie could give it. An assistant was supposed to support her magician, a practiced cum dumpster who drank semen like water and never let even a drop escape! What was this fat-chested cow, then? Was this simply neglect, or some sabotage of Sparkle's? Even with all the skillful, superlative work Trixie had done to make things simpler for her, thin trickles of precum still leaked from her lips, precious seed that should have gone straight to her belly instead dribbling down her chin.

“Ugh, of course the Great and Powerful Trixie had to be saddled with such an incompetent partner!” Trixie glanced off to the side, where Twilight Sparkle was already blowing her pudgy pink partner up like a bonafide cum balloon. Craning her neck only a little to the left revealed the hourglass, trickling down nearly as quickly as Trixie could fill up her assistant. “What a cheat this is! They must have known they wouldn’t win without some sort of handicap.”

“Mm.” Fluttershy nodded sympathetically, too focused on her own task to listen closely. All she cared for was to be filled ever more, to pack in as much of that wonderful cock as she could manage. Such a delight! Not as big as Twilight’s, but that only gave her more room to play with it. To toy around with her tongue. To tease, and tease, and tease as it gave her more, and more, and more. “Mm mmph!”

“No talking, Butterpie!” Trixie huffed. “Every word that falls from your untalented mouth is a drop of Trixie’s delicious cum you aren’t swallowing, and we are intolerably behind as it is.” She looked down into the vast butter-yellow canyon of Fluttershy’s cleavage, those mammoth milky udders obscuring her vision of all things below. Her knees, she could feel, were pressing into a warm, sloshing pudge about the size of a beach ball... which wasn’t nearly big enough! Two perfectly tremendous orgasms already, with time ticking down, and still her partner’s tits were bigger than her stomach! “Fine, Trixie shall take matters into her own amazing hands!”

It took considerable effort to dislodge herself from her docile assistant’s throat, closed hungrily around her flare and reluctant to let go. “Typical,” she muttered, placing the flat of her palm on Fluttershy’s forehead. “Won’t swallow, won’t let go. Why must Trixie be surrounded by incompetents, and such stubborn incompetents to boot?” Still, she was in charge here, and she would certainly not allow her strumpet cockpet’s silly ways to impede her. One, two, three firm shoves and her cock finally flopped out with a succulent wet pop.

“Mmm…” Fluttershy hummed in a sexual daze, too drunk and happy on Trixie to complain. She was nearly docile as a real cow (and more stacked by half) as Trixie beckoned her to spin around, presenting her plump yellow rear for penetration. “M-m-moo~”

“Yes, yes, poof, you’re a barn animal.” Trixie wasted no time in aligning herself with that plump, sopping pussy, globs of unswallowed precum mixing in with Fluttershy’s gushing arousal. She bucked her hips, thrusting up through the warm, all-encompassing embrace of Fluttershy’s nethers, a much nicer, tighter embrace than an unpracticed throat. “Hnn!” she stifled a groan as she buried herself deep in that delicious wet heat. “Oh, yes! Okay!” she gasped, grabbing Fluttershy by the wrists and pulling them back like she would a bondage pony’s reins. “This is where we catch up!”

Fluttershy’s vision had gone white, her lazy stupor broken by the sheer sensation of Trixie’s conquering cock inside her, stretching her like so few stallions could. Yes, this was even better! Her tongue lolled freely from her open mouth, drooling viscous and thick with leftover cum. She squeezed hard around Trixie, molding herself around every last contour of her magician’s magic wand, like a good assistant should! She mouthed words between squeals of pleasure, eagerly begging: “M-m-mooooore!”

“Ha! More, you want?” Trixie laughed. Her beautiful balls, still sloshing with a lake’s worth of unspent seed, were eager beyond words to unload into that empty, unfilled womb. Already, Fluttershy’s clenching cunt was leaking excess, thick, cloudy drops of too much rolling down her hamstrings... but Trixie could hardly care about that now. What her partner lost from her lack of skill, she could more than make up for in sheer volume. The monstrous slapping of Fluttershy’s tits over her growing medicine-ball belly excited her, turned her on like nothing else could. What power, what proof that the Great and Productive Trixie was destined to win and prove her perfect penile plenty! She thrusted harder and harder, faster and faster. Her mind’s eye pictured a bloated Twilight at her hooves, a mere servant, destined for nothing greater than relieving the pressure from Princess Trixie’s aching balls…

She smiled, a silly, orgasmic grin on her face as she approached final peak. “Well, then, Fluttershy... A good magician never lets her assistant go wanting...” She jerked, hard. Twin screams filled the air as the tides of orgasm broke over them. “More you shall get!”