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Story Start
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"Mmmm~" Lotus slid her body over Fluttershy's to push the girl into a more secure position for swallowing. Fluttershy wasn't struggling, the girl was blushing like a mare in heat, but she was squirming a lot in embarrassment, and Lotus' attire wasn't helping calm her down. Lotus gave her a kiss that turned into a lick, that turned into a slow tasting of her muzzle. She tasted very good, and she let out an adorable little *squeak!* when Lotus's mouth finally left her face.

"Now", she said softly, staring into Fluttershy's eyes, "you'll help me model this dress, right?~ That's why you're here for this sale, right~ To help with modeling?" Fluttershy had been imagining a very different kind of modeling (and she was pretty sure that Rarity had been imagining the same).

But she didn't say that, instead she stammered and thought very hard about how Rarity's design deliberately did not include a covering between the wearer's legs..

Lotus cuddled closer, more and more intimate. She was very good at charming prey, and Fluttershy was being very receptive to that charm. Her sex slid against Fluttershy's for just a moment - just enough to give Fluttershy a tingle - and then she slowly, seductively slipped the pegasus's head into her mouth.

Fluttershy moooaned.. The mare's body pinning her down, the soft, warm, almost fragrant smell of Lotus's breath surrounding her.. it all felt so right. Lotus' tongue worked its way around her face - softly, invitingly. And then a quick gulp and Fluttershy's muzzle was slipping down the throat, and she loved the way the throat gently squeezed around her. Even Lotus's insides smelled good. She imagined how it would feel to curl up into a tight ball and get pressed down and cuddled by the loving walls until she was nothing but nutrients.

Lotus took her time. Fluttershy had only recently discovered how good the spa pony felt inside of her, and Lotus wanted to make sure the opposite experience was just as special for her. Some prank this was; Lotus felt quite certain that by the time this was done she'd have earned herself another loyal customer. <3

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Over on the other side of the room, Rarity was not taking her predicament nearly as well. She was just a writhing mass, bulging and squirming inside of Aloe now. The spa pony idly massaged her stomach, helping to break down the food, while Rarity complained.

"I can't believe you would do something so gouache, this is simply beyond the pale!" She furiously thrashed. "And in my own shop? Do you hear me Aloe!? Your behavior is-"

Aloe squished her belly around. "Rarity, could you move your hoof please? It's jamming upwards at a very uncomfortable angle."

Rarity cut herself off and adjusted immediately. "Oh of course dear, is this better?"

"It's perfect, thank you so much."

"Good, just let me know if you need me to shift again~ Now what I was going to say-"

Aloe interrupted again. "And while you're listening, I just want to say, this lace stretches like a dream. I simply don't know how you do it; form fitting when I'm empty and still form fitting when I'm full! And never tight or uncomfortable in either position! I've never worn anything this delicate and versatile at the same time, Rarity you've outdone yourself."

Rarity basked in the praise so hard that she forgot that she was also basking in acid. "Aww Aloe, you're such a flatterer~ But yes, the whole idea is for the lace to accentuate the curves both empty and full. I'm so pleased that you like the effect~"

Aloe nodded, genuinely eager to gush over the garment. "Well it certainly does and I certainly do! <3 A little bit of lace around the stomach adds so much definition. Honestly Rarity, I feel even more attractive with my belly full!"

"Well, I'm simply trying to bring out the best view of you no matter what state you're in", Rarity cooed. "And you know, a dress is never beautiful on its own. A dress is like a picture frame: it's only beautiful because of what it shows about the wearer. And I couldn't think of anypony else better suited for this look than you and Lotus are."

Aloe blushed a deep shade of crimson and rubbed her stomach in an appreciative way. Then she gave Rarity a little teasing wink that the unicorn obviously couldn't see. "Buttering up the customer, are we?"

Rarity snorted. "Nothing of the sort, it's simply the truth. It's quite easy to make beautiful dresses when you have such beautiful and wonderful customers to put into them. <3" She sighed and gave Lotus' stomach wall a friendly nuzzle. "Now, where were we, anyway?"

Aloe laughed. "My behavior is?"

"Oh, right, thank you dear!~" Rarity took a breath. "Your behavior is DISGUSTING, an absolutely revolting display! To think that the two of you would stoop to such a brazen, ugly-"

Aloe sat back and grinned, admiring the way her stomach moved under the expertly woven threads.

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...a few short hours later and Aloe was nudging her head under her sister's body to help her reach the decorative urn that was going to be Fluttershy's temporary new home. Aloe's own shit was lying carelessly on the floor a couple dozen feet away, with Rarity's skull sitting on top like a decoration. It looked messier than it was; Aloe had made sure to leave her prey's remains on tile, and made sure the pile stayed self-contained. She was a firm believer that a good prank left no harm, so she would have never dreamed of ruining Rarity's plush carpets. But she couldn't resist being a little teasy.

Now it was Lotus' turn; she had taken her time with Fluttershy and her body was still processing the pegasus by the time Aloe was ready to enjoy slowly squeeezing Rarity's skull out, bleached yellow with her body's acids. Aloe didn't mind. A good shit would always get her feeling just a little horny, and pressed up against her sister's bowels was exactly where she wanted to be. Lotus got a little bit more comfortable on top of her, then pushed~

Aloe could feel Fluttershy's remains moving through Lotus' body. The lumps slid forward and a series of soft farts signaled Lotus' anus sliding open, a perfect tube of shit cresting the ring~ Lotus moaned and Aloe nuzzled her stomach affectionately. Fuck, the two of them really needed to do this more often. Being eaten was of course a service that their spa provided, but much more often ponies were interested in being the predators. Being able to dispose of prey together was a special opportunity for the girls. Aloe intended to enjoy it.

Lotus' body continued to tremble on top of her with the pleasure of a good shit, and Aloe continued to nuzzle and murr in appreciation of being so close to the action. She admired how graceful Lotus could be even while taking a dump, she made it look like a performance. The long brown rope moved forward at a constant pace, never speeding up or slowing down, never breaking off. It coiled around itself at the bottom of the urn. Aloe briefly closed her eyes and just listened to the soft wet plaps of poo and the quiet clinks and tings of bone sliding over a metal surface - if a pony didn't know the source they would imagine they were listening to some natural sleep aid. But it was the shifting weight that really did it for her. As more and more of Fluttershy came out, her sister's plump, appealing belly became more defined. Aloe pushed her muzzle in the soft fur, massaging Lotus' guts as she relieved herself; she knew that Lotus loved getting the sensual massage just as much as Aloe was enjoying giving it. Soft gasps and quiet moans and breathy panting.. Aloe could feel her sister's body getting hotter and hotter. Lotus squirmed a little, rubbing her dripping folds against Aloe's soft mane. Aloe resisted the urge to lick.

Finally, the last of Fluttershy was released and with one last fart Lotus' asshole puckered again and closed tightly. Both girls giggled, and Aloe pulled Lotus into an embrace. They both felt lighter and more playful with the extra weight shed, and there was no rush to leave so for a while they just cuddled and nuzzled and shared the occasional soft kiss.

"You know", Aloe teased while shifting her body to straddle her sister's. "If you do wear that dress all day working, it's going to be very hard to for me to keep my hooves off of you~"

"That's funny," Lotus teased right back, "I was about to say that if you don't wear that dress at work, I'll hold you down in front of all the customers while I put it on you~". Aloe's face turned beet red. Lotus could give as good as good as she took.

They maintained eye contact for just another second, and then broke out laughing and rolled off of each other. "Seriously," Aloe grinned, "Rarity knows her stuff. I can't compliment these enough."

Lotus smirked back, "almost makes you feel bad you dumped her on the floor, huh?"

Aloe glanced over at Rarity's skull and remembered the sensation of it sliding out of her ass. "..Nah X3"

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Fin
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