Skyheart grinned in excitement at her excellent plan. The pudgy pegasus had crammed herself nice and tight into a wooden chest, carefully designed with the lock on the inside and a fake one on the outside. She'd paid a pony to wheel her out to the vault and now she was waiting just outside with a number of other chests. She would be brought inside with the treasure and rob them from the inside out. Her plan was ingenious... so long as that mare actually did put her where she was supposed to...
 
She could feel the chest being wheel inside. In her plans excitement she forgot that she would need to wait many hours for the coast to be clear and her exit from her hiding place to be possible. The chest came to a stop as she heard muffled inaudible speech from outside, it was a bit gruff but she also heard the lock being fiddled with before some shouting and the chest being wheeled again.
 
Skyheart began to realise that she probably should have cleared her bladder first as she waited in that chest. She could feel it full and sloshing. Just when she decided she might as well empty it she heard the chest being lifted and put on something, and then she was being wheeled into the building. Her mounting excitement only rivalled her intense need to pee, the mare having to cross her hind legs and hold them tight to keep her marehood sealed shut. If she peed then they'd see the chest leaking and investigate for sure. She jumped when she heard the lock being checked and then the chest was on its way again.
 
The chest seemed to stop, weight being heard as something heavy was placed on top of it. She was being put in a stack, and it seemed it was at the bottom of the stack, so it would be difficult to her out even with the lock.
 
Skyheart heard some movement outside, and then what sounded like something being put on top. Her eyes went wide. The hooves trotted away, leaving her alone and it was time to get out. She quickly pressed on the top... and nothing... it was weighed so heavily down that it was jammed shut. Her eyes went wide, the mare's chief thought only how desperate she was to take a piss. She hammered against it, keeping her hinds crossed as her face took a red and embarrassed tint. She couldn't wait any longer!
 
There was silence for a few moments, her bladder adding pressure to her marehood with each passing second as she was forced to take a hold of it to keep from hiding in a puddle of her own piss. At the moment of her breaking there was a crashing sound as it seemed someone was removing the weight from the top of the chest.
 
Skyheart couldn't take it. The seconds turned to minutes, and she just had to go. As tight as she held her legs her marehood pushed apart and golden urine splattered out, splashing all over her own legs and dribbling down them as the mare felt it pushing out of her. She gave up with a whimper, parting her legs and just letting it flow out, the hot mare pee covering the bottom of the chest. It was then that someone finally seemed to remove something from the top.
 
The chest didn't open, as she was stuck there continuing to have a golden stream arc from her nethers against the side of the chest. The woodwork well built enough to not leak so it pooled under her, soaking anything she might have on.
 
Skyheart expected the chest to open, and lifted her hooves to push, but it seemed they only removed the top of the stack. She let out a whine as she felt the hot golden fluid all over her, covering her fur and ruining her classy pirate coat as she had no choice but to lay in it.
 
She would need to unlock the chest, as it had been relocked when she had failed the first time.
 
It took Skyheart a while to figure out that the reason the chest hadn't opened was because she hadn't unlocked it the second time, and in that time she stewed in her own pee. As soon as she had the thought though she hurriedly unlocked it and tried to break free.
 
She burst out the top only to find her head caught in a familiar rump. "Heya~" Seras said with a chuckle as she curled her gryphon half's tail.
 
Skyheart emerged gasping, not even watching where her head went as she ended up slamming right into a pair of plump pony butt cheeks. A griffon tail curled around the back of her head and Skyheart instantly put it together. "S-seras? What are you doing here?" she whispered harshly.
 
"Wondering how smart the brave captain is," She said with a laugh as she uncurled the tail looking back at her spreading her cheeks a bit.
 
Skyheart heard Seras laugh as the tail uncurled, allowing Skyheart to drop in her box, which smelled of pee. She sat back up, almost sticking her face into those spread cheeks. "I'm plenty smart... about to rob these idiots blind..."
 
"What idiots?" She asked stepping aside, they weren't anywhere close to the vault it seemed. She leaned in "All I see is you and your puddle of desperation~"
 
Skyheart looked around now there wasn't a butt hovering over her head. They weren't... this wasn't the vault at all. "What?! Damn it! That mare must have bucked up!" She cursed, when Seras commented on the pee. "O-oh... well I... I was in there a while..."
 
"It's been 30 minutes" She said with a laugh as she offered a hoof to help her out of her shame of sorts.
 
Skyheart blinked. "30..." she said, trailing off, then shaking her head. "It can't..." she took the hoof and stepped out of the carefully made and now pee stained chest. "I should have peed before I got in..."
 
"Maybe a few hours" She said rolling her eyes a bit. "Sides, I know where the mare you hired is~" She said with a grin.
 
Skyheart instantly snapped her eyes to Seras'. "Where?! I'll stick the bitch up my butt and fart until her head explodes!" Skyheart growled threateningly.
 
She pointed low on her gut to show where she was on her current journey. "About here".
 
Skyheart blinked. "Oh... you got her first... well... did you at least make her suffer?"
 
"Nope, just ate~ before she even got to do what you paid her for." She said with a grin as she leaned in close.
 
Skyheart's brow furrowed, and then she gave Seras a shove, pushing her back. "What the hay! She was going to put me in the vault!"
 
"And I put her in my gut," She said jumping back with a laugh "She'll be out soon if you still wanna punish her."
 
"Unless you're going to shit her out as lumps of gold, then you owe me!"
 
"You can have the egg" She said with a grin as she felt it
 
"What am I supposed to do with an egg?! Damn it, Seras. I'm going to get this chest cleaned, and then you're going to set me up instead, okay?"
 
She sighed as she went ahead and squatted the egg rolling out a she picked it up "Last call before I get it~" She said with a grin.
 
Skyheart watched as the mare squeezed out a thick shelled egg, squeezing her marehood apart to press out the thick white shape in a single smooth motion before dropping it on the floor then straight to her hooves. "Seras... I'm going to assume you ate the mare by accident, otherwise I'd already have you screaming in my ass. Now fix your bucking mistake and help me out here. No one wants one of your rotten ass eggs."
 
She narrowed her eyes "Really, you seem to like them the other night~" She said remembering a few weeks before she went ahead and downed it to add it back to the mass churning in her gut.
 
Skyheart thought back to that night and got the ghost of a smile before shaking it off. "Okay... maybe when I'm in the mood... but you take that one," she said. Sure enough Seras lifted it up and stuffed it into her maw, swallowing it down to join the rest of the mare that was still being digested, her gut churning. While that was happening Skyheart was tipping the chest, emptying out all the actual fluid and letting the chest dry a bit readying for use again.
 
"So where should we head to from here?" She asked as she flew closer and wrapped her tail around Skyheart's belly.
 
Skyheart felt the mare's tail curl around her plump belly and give it a squeeze, making the mare grin again, but she shook it off. "I'm going to get in this chest, and you are going to take me to the Creccan Estate around the back door. Guards regularly pick up and drop off at that location. Just don't get seen and they should bring the chest inside," Skyheart explained.
 
"Ok, will make sure to do that~" She said as she helped her back into the chest. She figured it might be fun to follow her in if need be.
 
Skyheart sighed with relief as Seras finally agreed to do it. "Thank you," she said snarkily, lying back in the still slightly smelly chest and pulling the lid shut.
 
[Random Crushing bad end for my enjoyment:
 
Seras sat on it to make sure it was secure.
 
Skyheart laid back securely when she heard a creaking from above, the wood sounding like it was going to shatter under a great weight. "Whoa, whoa! Lift off the heavy load! You're gonna break something!"
 
She sighed as she pat it next her. "But the load isn't ready to come out yet" She said with a laugh thinking about the mare from earlier, there was another creak she didn't hear as she taunted lightly, belly groaning.
 
Skyheart heard the next creak and panicked a little. Seras was real heavy at the moment. If she came through there, it'd be right over her head. "Come on! This box was expensive!" Skyheart moaned.
 
"Don't care~" She said with a grin. A second later she eeped and suddenly the chest top cracked and she was falling in, Skyheart caught under her butt and the wooden shrapnel of the lid.
 
Skyheart heard the wood creak, and then there was a snap. Her vision was suddenly filled with pony rump as Seras fell right through, her already weighty ass combining with gravity to slam hard onto Skyheart's poor head with a resounding crunch as Seras no doubt felt her rump cheeks get all wet and sticky.
 
She pulled herself out "O-oh my..." She said unsure what to do about this.
 
Skyheart's headless body shuddered a few last times in the chest, before another coating of hot, fresh urine flooded out of her and refilling the chest with the slick fluid once more. It was pretty clear there was no helping Skyheart from the destroyed remnants of her head, most of it still sticking to Seras' rump.]
 
Skyheart lay in the still faintly pee smelling chest, breathing slowly as she waited for Seras to make up for eating her crony. "You know what to do. Wheel me out to the back of the warehouse," Skyheart called clearly.
 
"Right" She said with a laugh as she started to push the chest, humming a bit as she lead the way along.
 
The warehouse had a single guard outside watching the approach. He smiled though when he saw Seras and waved her over, urging her to bring the chest. "You're late. This delivery was supposed to be half an hour ago," the guard complained.
 
"Sorry, ran into a bit of trouble," She said with a nervous smile as she wheeled it in past him. Her gut churning as she did so.
 
The guard looked at her with concern as her belly gurgled, then sighed. "You mean you stopped for dinner. Couldn't wait five minutes, huh? Alright, alright. Get in there!" he said, standing aside. The door was opened and Seras had entered the compound. She was to wheel Skyheart to outside the vault, where another pony would take her in with the other chests.
 
Seras smiled as she took her to a back corner and sat down next to it curious what she should do with it now that she was on the interior
 
According to the guard, Seras had a while to kill before the actual vault guard got there, but there wasn't a toilet in seat. She really needed to dump her load. She could feel it inside of her bowels, her anus clenched tight to seal it in as she looked quickly for anything to help. It was then she saw an empty box to the side. She flipped the lid open, leaping on quickly and sighing with relief as she made it just in time.
 
The first squelch was the sign of it coming and she relaxed herself, leaning back to let the first fat log of squishy waste slip out of her, falling into the box with a slap. Quickly another log followed, and then another, each filled with equine bones from the pony she had digested twice. Her hooves idly kicked at the side of the chest as she forced another squishy log and then another, slowly heaping up in the bottom of the chest underneath her.
 
The mare sighed, not really even thinking about the pony sliding out of her butt, just focusing on pushing it out a log at a time, clearing herself until the chest was heaped up with poop and she was empty. A quick drizzle of hot, fresh pee helped soften it out before she closed the lid and locked it tight. Whoever opened that was going to have a bad day.
 
Seras sighed as she kept her thing tail around to the side, wondering if Skyheart heard her going as she laughed. There was a slight echo in the large empty space, she just hoped the first guard wasn't hearing her, or she might need to drop off a second pony in the box on her way out.
 
If the first guard heard he didn't come to check. Skyheart though could be heard gagging from her crate, but at least she had the box to protect her from any smells. Not soon after she finished though she heard the trotting of another guard coming from the other direction. This had to be the one who would open the vault. Skyheart was planning on being carried in there by the guard.
 
She quickly shut the box and jumped down flapping her wings to disperse the smell, hoping it would just be confused for bad gas. She leaned on Skyheart's chest and grinned in the direction of the sound.
 
The guard trotted up, a mare in silver armour. She looked at the mare curiously, and then got a whiff of a scent that made her eyes go wide and take a step back. "Are you the delivery mare? Your job's done... payment will be on the front desk. I'll take it from here."
 
"U-understood" She said a bit embarrassed "I was wondering if I could follow in..." She said wings at her side as she looked rather harmless, her tail acting like a cats.
 
The guard blinked. "You... follow it in? Why? Look, I can't do that. You know that. There's protocol here. What's in that vault is incredibly valuable. That's why I have the only key," she said, pointing it out as it was tied around her neck. "Now please, don't create a scene. Your job is done. Get out of here."
 
"Ok... guess there's no one else here as part of that either?" She asked looking at her as a thought went through her wind.
 
"There are guards all over the warehouse. All I have to do is scream and they'll come running, but only I ever enter the vault. It's safe from Changelings that way," the mare explained then sighed. "Am I going to have to call for an escort to get you out of here?"
 
"Just, I kinda wanna know what's in the chest...." She said putting her hooves together nervously "I brought it a long way at the last minute cause the previous mare who was supposed to bring it never showed up."
 
"What's in this chest?" the guard asked, pointing at the one that Skyheart was in. "Usually it's on the manifest... but this one was an odd one... I'll tell you what, I can open this one here," she said, taking a ring of keys out of a saddlebag and picking the one that should have worked on that chest before trying to push it into the lock.
 
She gave a knock to the chest for Skyheart to open up, she hoped the got the memo otherwise this charade would end very quickly.
 
Skyheart heard the key and unlocked her end, before kicking it open. The lid opened fast, smacking the mare in the chin and putting her off balance so she fell forwards into the chest. Before she could scream, Skyheart opened her mouth wide and the mare's head ended up falling inside it, Skyheart slurping around it and up to the neck before fiddling with the key. She motioned at the armour, trying to get Seras to take it off.
 
She quickly grabbed it stripping the mare down as she slipped the armor on and took the vault key, the warden of the vault now in a belly sealed in a chest as Seras quickly threw the lid back down, smacking the rump hanging out of Skyheart's maw the rest of the way in.
 
With the guardsmare now naked, Skyheart has no problem slurping and swallowing... until the lid smacked into the mare's rump. She ended up gulping the mare all in one gulp, along with some air. As the guardsmare sank into her belly, Skyheart started to hiccup inside the chest.
 
Seras giggled as she slipped the armor on, figuring this would work out for the best. She took the key and went to open the vault door, with a heavy slide the door opened and she started to cart in Skyheart's chest.
 
There was no hearing the screams inside Skyheart's belly and inside the chest, so no help came. The mare thrashing inside Skyheart only making the mare hiccup again and again as Seras slipped the armour on and carted the chest to the door, unlocking it and passing through to a room completely filled with chests and all kinds of goodies. All Seras had to do now was lock the door from the inside.
 
She smiled as she also thought how this would end ~ Skyheart would be trapped with her as well, and she could have some fun with the captain as they loaded the chest down with treasure.
 
Skyheart unlocked the chest, it flipping open just as she let out a thick and heavy belch. She sat up, her belly jiggling as she clamoured out of the chest and took a look around with a smile. "Oh yes, look at all these chests! All we have to do now is find the best treasure and gather it all in one chest."
 
Seras laughed as she looked at Skyheart's belly "How much do you think she'll add?" She asked giving a smack to the captain's flank/.
 
Skyheart had a grin plastered over her muzzle as Seras smacked her rump, she loved it when ponies sent her chubby butt wiggling. "Oh, a few waist sizes easy. Good job I don't wear pants," she replied with a smirk of her own. "Not that you can talk, keep eating ponies like you do and soon I'll have to refer you to my tailor!"
 
"Hey, I lose a lot flying around on your errands, you're the one who stuffs her face and hides in boxes" She said with a chuckle as she kicked around shuffling.
 
Skyheart grinned at that one. "I'm comfortable with my size. In fact I love it when my butt gets bigger. I mean look at it, I know mares that would kill for a badonkadonk like this," she said, smacking her own rump this time and wiggling it for Seras.
 
"Not when it looks like you attached two pregnant bakers with glue to your flanks"
 
Skyheart burst out laughing at that and pushed her rump back to Seras, almost pushing the mare into her crack. "Aren't these just the sexiest butt pillows you've ever seen?"
 
She backed up and pushed on it "And its nothing but squish" She said turning to show off her rump that, while plump, was still a bit firm. "I prefer having a bit of muscle to mine~"
 
Skyheart giggled. "No, bigger is always better. Keep your muscle, I want butt cheeks you can get lost in~" She pressed her butt back against Seras, pushing their rumps together and seeing how her cheeks all squished and compacted against the smaller pair.
 
"And you'll never fit through a door again" She said placing a chest on Skyheart's butt only to watch it sink in and disappear somewhere amongst the pudge... not really it just kind of sat there before falling out
 
Skyheart laughed again at Seras, watching her play with it. She did love that level of squish for sure. "Well we've wasted enough time comparing booty when we should be gathering it up!"
 
She gave a nod and went looking for something special to grab.
 
Between Skyheart and Seras a simple plan came into action. Using a chest of cheaper treasures they moved pieces to replace more expensive pieces, gathering the best and most valuable in one specific chest without leaving any unusually empty. Soon enough though the chest of cheaper stuff was empty, and the chest of valuable stuff full and ready to go. Skyheart felt a grumble in her bowels though. "Urgh... you may want to go... very far away," Skyheart said to Seras as she moved to the empty chest.
 
"The vaults not big enough for me to do that without getting caught" She said as she heard the grumble and ducked away some.
 
"Then good luck to you!" Skyheart said with a grin, as she sat her plump ass down on the chest, it squishing out to neatly cover most of the opening to the box. "Because here... it..." Skyheart grunted before with a cry of "Comes!" a fat, squishy log of brown moist crap began to slip from her bowels, sliding out of her with a squelch and hovering over the opening of the box as Skyheart groaned. Then came the wet thud as it dropped into the box underneath her, Skyheart sighing with relief as the next few lined up.
 
Seras held her nose, used to the pegasi's usually relief, she'd watched more than her share of guards exiting that rump when they were in private chambers. She could hear the rather solid waste pushing its way past the pudding of a butt Skyheart called her flank.
 
Skyheart gave Seras a wink, using her wings to fan some of the smell Seras way and laughing about it as a second less thick but still long log wormed its way out of her tailhole, only to splat on top of the first in the bottom of the chest. Straight after another smaller one slid out with a second splat, and then out came the third, this one actually containing more than a few bones so it made a clatter as it hit the bottom of the box. Skyheart started to bounce up and down on her jello butt to use gravity to help loosen some more thick, fat logs and squeeze them out of her tailhole, more squeaks of gas and thumps as logs slipped from her butt.
 
"You done yet fat butt?" She asked grimacing at the wing flaps, they made her stomach rumble with nausea.
 
Skyheart lounged back, thinking about it. "Nah, going to squeeze a few more out of my glorious rump," she said with a wink back at Seras, seeing her faltering a little. A few more noisy splats and thumps though and Skyheart was done, just stopping to let loose a golden shower all over the heaps of poop with a sigh. As her marehood finished its flow, she slid off and sealed the chest. "There, that should be the weight of a treasure chest."
 
Should I test out my little rump to see if I can beat that?" She asked tilting her head as she grinned getting a glorious idea.
 
"Your rump couldn't beat mine at anything," Skyheart said with a snort.
 
"Wanna put it to the test?" She asked with a laugh as she waved it in front of Skyheart.
 
Skyheart grinned at Seras. "Go on then! I'm telling you now there's no point though. Your butt couldn't hold a candle to mine."
 
"Get closer and Ill prove it can!" She said obviously sounding flustered.
 
Skyheart rolled her eyes and stepped closer, standing right behind Seras' rump. "Go on then. Let's see what your little rump can do."
 
She flung it back catching Skyheart fully in the face with her pucker. Giving a snicker as she shoved it over the suddenly surprised captain who would soon see the small firm rump could tackle even her rump of molasses.
 
Skyheart didn't know what she expected, but for the rump in front of her to lunge back wasn't one of them. She didn't even have time to shout before the pucker slammed into her face, jamming her head into Seras butt as those cheeks clapped around her neck. Skyheart tried to shout something but it was muffled, Seras quickly capitalising on the surprised to slurp over Skyheart's stomach and waist, reaching that big, round butt. It would be a challenge still.
 
She struggled, the muscles straining to pull her in as finally with a pop the chubby butt of Skyheart popped in and formed a rather lopsided bulge in her gut "See, could handle your fat flank" She said as she bounced her butt.
 
Skyheart felt her butt squeeze and squeeze until it popped inside, bloating out Seras' gut and almost squishing Skyheart's head as she was forced to curl up. "Okay! Okay! You can! You win! Now let me back out, Seras!"
 
"I don't think you'll fit back out, it's like shoving a cork into a wine bottle, t'was booty that killed the beast and all," She said as she wiggled and jiggled her Skyheart filled belly.
 
Skyheart blinked when she heard what Seras had to say. "W-wait, what? So... does that mean my butt wins? As it's too big to squeeze out of yours?" Skyheart said, grinning despite the oncoming gurgle.
 
"Nope, cause was your booty that killed the beast, not mine" She with a laugh as it was getting rather itchy for Skyheart in the belly "IF it were just a bit smaller, you could actually fit out in one piece instead of digested chunks"
 
"Hey, I'm not a beast!" Skyheart replied, punching Seras' stomach from the inside. Then she felt that itchiness on her coat. "Also I know you like to be funny and all... BUT GET ME THE HELL OUTTA HERE!"
 
"I will, when you can squeeze out" She said as she went to nap in the chest Skyheart and been brought in, despite the smell it was cozy and private. She shut the lid and locked it as she did so, the guards when they came to check to see what was taking so long would most likely find the smelly chest and allow her to leave secretly.
 
Skyheart blinked. She was serious. "No wait, Seras! Seras! We're friends, right! Seras!" she started to shout as the mare sat back in the chest. She heard the lid shut, and then the sound of snoring. When Seras awoke the next morning Skyheart would be nothing but a huge pile of crap herself, her big booty only adding height to the pile she'd leave. The next morning there was evidence the guards had been in as chests had been moved about, but she seemed to have missed them.
 
She stretched as she opened the chest and peaked out, wondering where she currently was and how easy it would be to get out. The one mistake she had made was leaving Skyheart with the guard mare's uniform on so it would be hard to just slip out.
 
It seemed like the chest was still sat in the vault, but Seras had the key. Even if she didn't have the armour she knew there was only one guard on the rear exit and he should be easy to slip past. While she was in the vault though she had all the time in the world to let Skyheart out.
 
She stretched out and sighed she had plenty of time to do what she needed as she went looking for a few valuables to snag. It wasn't as possible to grab things right now as she was limited in her capability to carry much, she wasn't planning to do something stupid like eat the treasure to have hard metal poking her rear on the way out later.
 
Skyheart and Seras had already sorted the most valuable into a chest, and it was easy enough to root through just that one chest for the most valuable and expensive items. She only took a few, but they were enough to make this heist the most valuable she had ever been on.
 
She grinned as she trotted off looking for a proper farewell venue for the former captain Skyheart, now captain slag dump she thought of with a giggle as she a lighted a top a pile of crates wings flapping at her sides.
 
The warehouse was full of nothing but crates and chests. She could see a door which might be the toilets in the distance, but it was in an open area, where guards might patrol if they were so inclined.
 
Seras puffed her cheeks out at this and decided to go from the top of the stack onto the crates, that way it would be awhile before the lovely captain was found as her odor wafted down onto the guards below. She squatted and grunted with some effort as she started to push out a hard cracking log onto the crates. Her hole pursing with some light effort as the furs alighted onto the wood.
 
She spread her cheeks more so using her wings to help her stand, glad her butt was small enough that it didn't throw her weight off when she did this.
 
Skyheart for a Pegasus flew very little with her belly weighing her down half the time, Seras had become the fighter of sorts more often where Skyheart could just throw her weight around as a weapon. The quarter gryphon in her allowed for some interesting agility, and surprisingly her scat didn't come out in a splatter like most birdlings. She grunted as A skull popped out before being buried by the squishier parts of the waste, most likely what had become of Skyheart's fat ass and stomach with the first having been the only musculature in the entire flab of a pirate.
 
She pushed more as what came out made her wince as it was more like gooey mud oozing out her rear that started to slowly run over the edge of the box tower she had chosen as her perch.
 
Seras soon finished Skyheart overflowing from her pile as she sighed and jumped down grabbing her treasures, as she snuck past the guard to go back to the ship. She would be captain now... though that meant she would need to find a new crew as well.