Author's Note

There are several backgrounders here.
Charm:

Beauty Brass:

Count Caeser:

Fine Line:

Star Gazer:

Masquerade:

Orion:

Perfect Pace:

Drizzle (note that I edited the chapter a bit, she does not survive):

Amethyst:

The Worst Night Ever

The big night had finally arrived, and the mane 6 arrived with a big song. Despite the constant threat of execution in Canterlot, everypony was still excited.

Rainbow Dash and Applejack in particular had forgotten to go to the bathroom in the excitement. Applejack trotted slowly towards the palace's toilets, while Rainbow Dash zipped on by. "Gotta pee!" Was all she said to a chuckling orange pony.

The first thing the cyan mare noticed was the glass doors to the bathroom. It was almost as if there was no door at all. As she got in, she saw three toilets on the left, specially made to fit severed heads connected to pipes, with a drain below. Each only had one of the slots filled, which Rainbow figured would be functional if less comfortable. The first had Filthy Rich, the second Sealed Scroll, and the third Royal Ribbon. Near the door, there was an empty basket for spare heads, and on the far end, there was an acid tank with a hoop and flap on the top that had labeling saying it was for cleaning dead heads into skulls.

Rainbow decided it'd be fun to punish Filthy, having known his jerkishness in Ponyville, and quickly sat down, earning a muffled grunt as her pussy enveloped his muzzle. The sensation tickled a bit, making her giggle. She took a moment to relax as things settled, and sighed as she started up her stream.

Filthy rather lazily put his tongue out and didn't complain further as the warm liquid came onto it. As more and more flowed, his tongue started to squirm, which made Rainbow give a slight moan while he desperately swallowed into the throat-pie.

Rainbow was too relaxed and pleasured to notice Applejack open the door, and thought she was essentially alone as a few pops of gas came out and her bladder reached a less-pressing size. "Mmm, better than I expected."

Applejack chuckled. "Ya'll look like ya never sat on a pony's face before."

Rainbow, blushing, let out a much louder pop as she opened her eyes wide in surprise. Her stream increased too for a bit, making Filthy accidentally sputter some out around his mouth and into the bowl below. "I have! It's just...Scootaloo's a little gentler and I don't pee into her."

Applejack shrugged and went over to Royal Ribbon, eyeing up the nervously-smiling head.

Rainbow expected a muffled reply as she finished up with a few forceful spurts, but instead, his tongue jerked wildly a few times, then twitched slightly on her clit. She got up to look at the head, and saw his eyes glaze over. She scoffed. "Typical."

Applejack chuckled. "Heh-heh, guess you were the straw that broke the camel's back, sugarcube."

"Was still kinda...nice...aside of you teasing me!" The cyan mare replied before tossing Filthy's head into the hoop so that it dropped into the acid. She made a little gesture of having nailed the throw.

Applejack rolled her eyes sat down on Royal Ribbon's head, eliciting an eep as she let out a little, but loud, fart on Royal's nose. "You know, back on the farm all we've got is a sibling's tongue to clean up after. These ya can make lick ya while ya go! Aaaah~."

Rainbow chuckled a little at the fart, but then pictured Apple Bloom cleaning up Big Mac's plothole and nearly threw up, zipping out before the farmpony, who was now smirking at her, could reveal anything that would make her actually lose her lunch.

Back at the main event, Twilight had just come up to help greet when her parents stumbled down the stairs, followed by guards. "Mom, Dad...what are you doing here?" She asked.

"Oh, you know your mom, she couldn't resist doing a little raid of Celestia's lingerie, just like old times!" Night Light explained.

Celestia was aghast, but then grinned and gave a confident look. "Guards, bring me two guillotines at once, these two ponies are hereby sentenced to death! Sorry, Twilight, but their antics have gotten...old. I'm sure you understand."

Twilight went wide-eyed and gulped nervously. "Y-yes, I suppose they have. Uh...can I have some alone time with them before you...chop them? Please?"

Night Light and Twilight Velvet looked to Celestia pleadingly as guards brought in the guillotines and put the two in them.

Celestia giggled. "Absolutely not, your job is to cement their shame by forcing them to pleasure you, their own daughter! Each will be chopped only after partaking of your orgasmic fluids."

Twilight tried to object "B-but..."

Celestia snapped at her. "Say one more word and it will be a triple execution, my faithful student."

Twilight nodded solemnly and promptly sat on her father's face, being greeted with a moist tongue to the pussy, lapping lightly and making her relax, with a dopey grin. "Aaah..."

Twilight Velvet offered a word of encouragement. "Enjoy it honey, your dad has always been good to my OH oooh my!" A guard had just started licking her pussy.

Celestia smiled as she shook another guest's hoof, watching as another guard spat on Twilight Velvet's shitter and began rutting it. "Good to see my memo about ponies in guillotines being fair game got out."

Night Light's rear was simply hoofed by a curious guard, eliciting a muffled yelp followed by the sound of his urine splattering out onto the floor below. He managed to recompose himself slightly after a bit and nibbled on Twilight's clit.

"Oh Dad! You're not quite my first, but you're good!" Twilight shouted as she moaned in ecstasy, the whole event's excitement adding to the incestuous pleasure.

Twilight Velvet moaned incoherently from the double assault on her rear.

Among the moans and the licking from her dad, Twilight lost herself, squirting on his tongue slightly as her body shook. "Ah, I guess I am a bit easy..."

A guard set the guillotine off and pulled out his hoof from her dad's rear. A bit of shit followed it as the blade connected, his twitching body being quite a mess.

To Twilight, it was a bit odd feeling her dad's tongue jerk, go still, and then later lazily move. She shrugged and gave Dad a sloppy smooch before tossing his head aside and sitting on Mom's snout with a squelch, getting a good meep and a little lick right away. "Well, um...not sure what to say, Mom, I guess I uh...sorry? I used to fantasize about this, but not with your execution..."

Twilight Velvet did what a mom does best, comforting her child, with a flurry of tongue-twirling in Twilight's twat. Her tongue went a little wild after a moment from one of the guards blowing his load up her ass before trotting back to his post.

Twilight moaned lightly, being a tad worn out from Dad. She stared at the incoming guests, who seemed to snicker a bit upon seeing her like this. Twilight didn't mind much, but hoped Mom would hurry up. She felt a stray lick to her butthole, making her jump slightly and go derp-eyed for a moment, a bit of wee coming out onto her mother's snout.

Celestia had the guards put Night Light in the toilets, then smirked at Twilight, who smiled back as her mom's tongue went deep in her plot.

Twilight wiggled a bit. "Careful down there, I'm really flatulent today. Probably the soluble fiber in the hay beans I ate, fermenting in my dige-ooooh!" Twilight was interrupted by her mom's tongue rapidly pulling out of her farty ass and going to town on her pussy folds.

Twilight Velvet simply moaned in response, likely from the stallion who was practically fucking her with his snout.

As the minutes dragged on, guest after guest saw the strange display, and soon, Twilight and her mom were both moaning louder, the heat in their loins rising.

With one kiss to the mom's clit by the stallion, and a corresponding thorough tongue-plunge in Twilight's pussy, the two had simultaneous climaxes.

Twilight's tongue lolled out, her face put on a derped expression, a light gush went into her mom's mouth, and soon, a sputter started to escape her rear, tickling her mother's nose.

Within a second, Twilight Velvet's convulsing plothole let out a harsher sputter that pushed out a huge wad of cum onto the licking guard's face, making him go wide-eyed as tasty mare juices coated his nose and came down to his tongue. He looked a little less than pleased as he prepared to release the blade.

Twilight giggled, making her asshole let rip at a faster pace, as she repositioned and looked back. Her mom seemed content, smiling and giving little kisses to the sputtery hole as it finished up. "I wish I could study the genetics of how our orgasms affect our anuses..."

Twilight Velvet was about to roll her eyes, but the guard slapped her ass so hard it farted again, and then she heard the blade starting to come down. As her eyes looked upwards, she began releasing her bladder as well as her bowel pressure, a tipper tap of urine hitting the puddle her husband made.

Twilight found it odd how her mom's head seemed to freeze as it was separated with a loud thunk. She wondered about the mechanics of it as she watched the blood spurt out to the sides from the neck of the twitching and pissing body. Her concentration was broken as her mom's tongue squirmed again. "Mmm, I love you, Mom."

Celestia prodded Twilight's shoulder. "While I'm loving the displays of affection, I'm afraid that this much wind being broken out here is upsetting the nobles. Please take it to the toilets, and make sure to install your mother's head there."

Twilight nodded and trotted with Twilight Velvet's head.

In the bathroom, Twilight found Night Light's head replacing Filthy Rich. She quickly decided to put her mom in the top slot, as Twilight Velvet seemed suited to ass-licking. The two smiled back at their daughter.

Once the two were reunited, the door swung open. Diamond Mint and a light pink 10-year-old unicorn filly with an azure mane doing the potty dance rushing in.

"How do I pee? How do I pee!?" Asked the filly.

"Oh, you can just go anywhere on the floor!" Replied Diamond Mint as Charm bursted in.

Twilight sat down on her parents' heads and quickly tried to correct her. "Actually, going anywhere but in the toilets and using the heads properly will get your head chopped off, so..." She trailed off as she noticed the filly had already dribbled down her little legs and was making a puddle on the floor.

Charm screamed "No!" and tried to grab the filly and run, but was stopped by a magic barrier.

The filly, hyperventilating a little and wide-eyed, shrieked as a magic guillotine formed around her.

Diamond simply smirked and groped the filly's rear, giving it a few grabs and a smack, then even a lick. "Mmm...shhh, it's how it's supposed to be."

The filly calmed down a little, only for her neck to be absolutely demolished by the fall of the magical blade, her little head rolling around the floor with a look of shock from the painful separation while her body fell over and began spurting blood.

Twilight was stunned, deciding to simply observe as her parents idly licked her, while Charm was mortified.

"My daughter! Just...just a head now...why, Diamond?" Charm asked tearfully.

Diamond picked up the now-crying filly head and gave her a smooch. "Cause you stole my boyfriend, remember? Now, piss on her face or I toss her in the acid." Diamond held the head low and out a bit.

"Please mommy! I don't wanna melt!" Was all the filly could think to say.

Charm sighed as she shed a tear. "...okay. You win, Diamond Mint." She hiked up her fancy dress, turned around, and squatted on her daughter's mouth, with her holes not quite aligning to spare the filly a salty, humiliating drink. Charm made some straining sounds for a moment, but then managed to start up a weak stream that lightly drizzled the filly's face.

The filly spat a bit. "Eww! Your pee tastes bad, mommy!"

Charm sobbed a bit. "Sorry, dear..."

A magic guillotine formed around Charm, and immediately chopped her, causing quite the noise of bowels forcefully releasing to make a little mess.

Diamond shoved away the dying body to pick up the very sad looking head. "Aww, you two should kiss." She put the two lips to lips after cleaning up a bit of splatter on the filly's cheek.

As soon as Charm's head unfroze, she obliged, tenderly making out with her surprised daughter.

Once it broke, her daughter asked. "Mommy...are we gonna be okay?"

Charm broke down crying, while Diamond Mint grinned in a way that made even Twilight shudder and fart a few times in fear down her mom's throat.

Diamond Mint promptly did some rearranging so mother and daughter could be in the toilet next to Twilight, and sat down with a brassy fart that was met with a muffled cry. "Ah, nothing like heads you got chopped yourself to shit and piss into. You know, I actually put a diuretic in the filly's cup of punch to make sure. How about you?" She turned to Twilight after a glance towards the bodies that had gone still and cold in a big puddle of blood.

Twilight took a moment to come down from a bit of shock at what had just happened. "W-well uh, these heads are my parents. They actually got themselves into this position. You know, what you did was...pretty cruel, but I think she deserved it if she really stole your stallion." Twilight said with a smile and a little fart.

"Thanks. It can get crueler in this pony chop pony world, you know. How are your parents holding up?" Diamond asked with a sympathetic look.

"Dad's tongue is barely moving, I think he's about to die... Oh well, mom always was better at cleaning me up after I went potty anyways." Twilight stood up a moment, telekinetically grabbed her father's head, and levitated him over to the acid bath slowly.

"Whoa, Twilight, please! I'm not dead yet! Oh Celestia!" He said before flopping in and began furiously gargling as he futilely tried to resist the acid.

Diamond Mint clapped.

Her mother promptly scolded her, complete with full name. "Twilight Farty Sparkle! I raised you better than to do something so evil to your father!"

Twilight sat down and unloaded quite a large fart into her mother's mouth. "As far as society is concerned, you two died out there, heads are nothing more than a chance to say goodbye to a dead pony and get some nice ass-kissing from it...sorry, but Celestia wouldn't want me to be weak, now lick."

A muffled protest came amid anal slurping.

Diamond turned to Twilight a rather odd-looking smirk as Charm made noises indicating the turd had finally found its way out. "Is your middle name really Farty, or the bitch just tryin' to humiliate ya?"

Twilight made an annoyed grunt and moaned slightly. "Mom had a nasty sense of humor and my healthy eating basically turns me into a musical instrument. Kinda glad I get a little revenge on her now."

"Hmm, maybe I should eat my greens so I can better serve Celestia..." Diamond said with a final fart before taking out the filly head, spitting into her scared mouth, and tossing her into the acid bath.

"Good aim!" Twilight said with a chuckle-fart, before the two hoof-fived, got up, and left, while Charm and Twilight Velvet sobbed and began exchanging stories.

Out back on the floor, Pinkie was trying to get everypony excited with music fit for a foal's birthday get-together. The band eventually decided to trot off, but Pinkie rushed over and threw Octavia at her cello.

One loud crash and a sickening crunch later, Beauty Brass rushed over to check on her. At first, it looked fine, just a dazed pony stuck head-first in an instrument, but just after he pulled her out, her head drooped and her bladder started to empty. Her eyes went wide as her bowels then released comically, sputtering out liquid shit onto the stage, shocking the audience and causing some ponies to chuckle.

He giggled and made out with her for a few moments. "Mmm, everything I could hope for to practice kissing. Hope it's just as good for sex." He then dragged the terrified-looking Octavia off-stage as Pinkie resumed festivities.

Meanwhile, Rarity had had enough of Blueblood. After he used her as a pony shield against a cake, she blew.

"Afraid to get dirty?!" she said as she decided not just to shake it onto him, but to take out a blade she'd brought just for this very purpose, and swiftly slice off his head while he stumbled.

Blueblood tried to ready a spell in fright, but with a "shwick" sound and a trail of blood spray, his shocked head came off.

Rarity chuckled maniacally and really soiled him by farting on one of his open eyes in front of shocked nobles. Meanwhile, his body kept going on its own toward a precariously-placed statue.

Blueblood's horn seemed to short out, and his head, with a disgusted and horrified expression, immediately began twitching in death-throes, drawing everypony's attention at the unusual sight instead of the falling statue.

By the time Rainbow realized she had a shot to save ponies, it was a bit too late. The thin, heavy, and sharp unicorn statue had instantly decapitated Masquerade, and crushed Fine Line, who was screaming a bit as her bowels loudly emptied until blood filled her lungs. Gurgling, she drowned in her own blood, and was soon gone.

The ponies were so horrified by two instant deaths in a row, that nopony got out of the way as Rainbow moved around unsteadily with the statue, its horn slicing off the heads of Star Gazer, Orion, and Perfect Pace in quick succession.

Sir Pony Moore was the only one of those Rainbow thought were imperiled by the statue who made it out alive. While Count Caeser was also unscathed by it, his bladder released all over the floor, and the palace's spell chopped off his head a minute later.

Rainbow managed to drop it the statue, but it toppled a pillar, leading to a domino effect. Amethyst screamed as one crushed her, but thankfully, it internally severed her vertebrae, leaving her neckbroken instead of dead.

Celestia and Twilight came upon the scene, shocked at the grotesque display. There were deep red and clear yellow puddles around the victims, whose plots occasionally sputtered uncouthly while their limbs twitched.

One mare, Drizzle, was right behind the headless and now pooping body of Count Caeser; in fear she let rip a little loud sputter like a lightning preamble to rain; it was, naturally, followed by her lightly wetting her pretty half-skirt, a little drizzle escaping onto the floor in full view of nearby ponies. In disgust at the filthiness of it all, she vomited up what was once an apple fritter and hoped that her decapitation wouldn't hurt too bad.

"Well, it can't get any worse..." Twilight remarked.

A rumbling came from outside, then several animals burst in followed by a horrific-looking Fluttershy.

"YOU'RE GOING TO LOVE ME!" She shouted.

Everypony panicked, running about randomly, as the floor was soon soaked in urine. The spell to execute the offenders who'd soiled the floor finally began activating, but everypony was running too fast and it was confused about whose urine was who's. Only the very slow and elderly lost their heads as Drizzle left a trail around them.

Twilight stammered a moment, but then Celestia put her head so close to Twilight they could kiss, and in a very nonchalant voice, spoke one command. "Run."

The mane 6 got out of there in a hurry.

Twilight dared to look back. She saw a smiling Diamond Mint straddling a defeated Drizzle in a puddle of piss. Diamond rubbed the pegasus' snout in the wet floor a bit, then moaned, squirting and farting on the poor mare's back, as an ethereal guillotine formed. Drizzle looked to Twilight pleadingly as her head was severed.

Twilight decided now was a very bad time to find out if Diamond would would dare go after Celestia's student and teleported out.

Later, at the donut shop, Celestia made it clear that Blueblood's death was so funny that it wasn't worth punishing, it's what really made the event the best night ever, other than her prized ass-licking Drizzle head donated by a certain blue unicorn.