Magnificent MUSHroom.

Reward for Gionvanni~


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“A delivery, your highness!
From Sarasaland!!!”

“Ooo, that must be from Daisy! Whatever could she have sent me this time~?”

Eagerly taking the neatly wrapped gift box from Toad dressed like a little mailman, Princess Peach sat upon her throne and happily began undoing the orange ribbons.

The two princesses would often trade gifts with each other, ranging from cute little trinkets to odd, sometimes even lewd novelties that would surely get a regal young woman some dirty looks.

But no matter the nature of the gift, it was still a gift! And Peach would enjoy them to the full extent...it’d be rude not to!

“Let’s see...oh!
A...mushroom?”

Peach curiously looks into the box, pulling out a strange, simple-looking brown mushroom in one hand and a note in the other.
Looking at the note, it was a mere teaser from Daisy it seemed…

“The perfect mushroom for Princess ToadSTOOL!!!

Hahahaha!

Daisy~✿”

“Such an odd message, but...I am rather hungry.
Down the hatch, I suppose!”

Reading nothing more into Daisy’s note, the princess downed the large, brown mushroom bite by bite.

Though notably plainer in both appearance and taste than the typical mushrooms of her kingdom, Peach began to quickly notice just how full her belly was getting.
A slight bulge at her stomach formed almost immediately, only growing more and more as she finished the fungi. By the time she was done, her belly notably flopped out in front of her, swollen as if something massive was growing in there…

“O-Oh...oh my...that was...mmmrph...q-quite the snack…”
Peach grunted a bit as she shifted in her throne, patting the massive gut she now mysteriously had.
With her shifting, a sudden gurgle stirred up within her, right down in the lower intestines. The uncomfortable wincing from being too full suddenly became a wide-eyed “Oh!” of realization...but tragically too late.

Prrrft...prrr...prllrlrpt...brruuaalrphrt…

With little more than a couple of rude toots sputtering from her round bubble butt, Peach could feel her poor hole opening up immediately to the firm, solid head of a HUGE turd!!!

One hand immediately slammed down on the armrest of her throne as she tried to quickly run to the restroom, but standing was all it took for her instant accident to take off!

sssssSSSSCCCCRRRRUUUUUAARRRRLPRTCHPT!!!

Peach’s perfectly porcelain face went beet red as she felt it.

The surprise log of a load just shot right out of her, tenting out her lacey pink panties a solid 5 inches behind her.

With the same log still slithering it’s way out though, her poo was now starting to coil around in her seat, pressing the sticky hot shame up against those soft bouncy cheeks with no signs of stopping.
She still felt so full!!!

“O-Oh, what to do? What to do!?
I-I can’t...s-stop...HRRRRNGH!!!

P-POOPING!!!”

Peach panicked to herself mildly by this point as she felt her panties filling with at least 10 pounds of fresh princess poo now.

No matter how much her butt seemed to empty itself of its own volition, her belly still gurgled as if she needed to push more.
Her feet couldn’t bring themselves to move forward as her knees trembled with worry and aftershocks of her thunderous dumping.

Standing there in an almost half-squat before her throne, as unladylike as it was, the princess found no other choice but to just...give in and push more.

And so she did just that.

“MMMMMMRRRRRRRRRNFFFFFF!!!”

Scrunching up her adorable, bright red face and squeezing her gloved fists tightly at her side, Peach now fell to a full squat and grunted loudly as her tummy flex and butt opened up further.

The sickly, sticky squelching erupting from under her silky pink dress was now becoming so loud it echoed throughout the castle.

Toads roaming all throughout looked around themselves, feeling a slight tremble at the feet...it was as if an earthquake had struck, but it was so much louder!

Meanwhile, Peach’s panties had now slammed to the ground with a wet FLUMRPH! as they quickly became more of a poopsack than underwear.

With the increased output, the princess was filling her pants to the point of lifting her off the ground.

“O-Oh….oh goodness, I can’t...I can’t stop myself...it’s getting so warm…”

She moaned out as her butt began to go numb with so much mess ejecting from her.

Her flushed face was now damp with sweat thanks to how much work she was putting into her panties-turned-diaper.

The steamy stench rising from under her dress combined with the hip-smothering warmth of her pile was beginning to stimulate her to the point of not wanting to stop…

As her panties expanded enough to now escape the privacy of her dress, she was practically gone now...her hands were too busy pawing at her mushy, poo-packed crotch….

“P-Princess, whatever could be happeni-WAAAAH!!!”
A small group of Toad servants ran up to the throne room only to see (and smell) such a perfectly contained, yet utterly destructive mess blossoming from beneath the princess’s bottom.

Though the lace held everything in just fine, the way the ultra-stretch fabrics filled out the throne room was beginning to strain the very walls of the castle.

The floor found itself cracking underneath the steamy weight of Peach’s poo.

The thick, nearly visible miasma of stench began peeling paints and even knocked out a Toad or two.
The sheer power of this uncontrollable poo was becoming all encompassing!!!
And as Peach mindlessly rubbed herself to completion while sinking in her own soil, she was entirely obvious to the crumbling and crashing of her poor castle.

Walls fell, rooftops toppled, bricks went flying!!!
And for once, it wasn’t even King Koopa’s fault…

With a booming blort to finish it all off, Peach awoke from her disgusting little daydream to find herself atop a pile of panty-packing taller than her own abode!
With half of the castle destroyed and replaced with her own dumpy undies, Toads squirming underneath trying to break free from the goopy grasp, the princess clasped her hands over her mouth in shock and embarrassment...but also intrigue.

“Oh that Daisy!!!

I knew she liked pranks, but I’ll surely be put back in diapers for this one!!!
...then again...maybe that wouldn’t be the worst thing…”

Peach mumbled to herself, looking down at the magnitude of just what she’d done...and being entirely unable to stop herself from smiling as her butt sputtered to quiet.
Though the cleanup and repair would be terrible, she just could help wondering where she could find another one of those mushrooms for later...perhaps a vacation to Sarasaland was in order!!!