The moon had risen high into the cloudless starry sky as Princess Celestia walked back into Canterlot Castle. It had taken only the slightest bit of her magic to restore her crown and simple white dress, tied only at the waist with a large pink sash hanging off her hip. For as much fun as she had smothering Las Pegasus underneath her famously impressive breasts, she had a certain air of dignity that simply had to be maintained within the castle walls. Even if she was only walking to her bedroom.

A dark gray unicorn stood at attention as Celestia approached her bedroom’s doors. “Good evening, Your Majesty,” said the guard.

“Good evening, Astral Star,” replied Celestia. “I take it there’s something I need to know before I get to bed?”

“Yes ma’am. Her Majesty, Princess Luna, is waiting inside her chambers for you. She wanted to see you as soon as you returned to the castle.”

Celestia’s eyes rolled towards the ceiling, though a smirk betrayed her amusement. “And whatever it is she needs to see me about can’t wait until I’ve gotten some sleep?”

“I’m very sorry, Your Highness. She insisted.”

Celestia sighed, shrugging her shoulders. “Very well. I can only hope Luna is going to keep this mercifully brief,” she said as she turned back down the hallway.

Celestia opened the double doors to Luna’s chamber with her magic, casually strolling in. “You called, sister?”

Luna was already facing the door, arms folded over her chest, tapping a finger to her arm with an impatient scowl across her face. The soft light of the torches reflected off Luna’s dark blue dress that sparkled like her flowing, starry mane.

“We most certainly did, Celestia. We simply must discuss these episodes of yours where you feel the urge to become gigantic.”

Celestia’s smirk went wider as her horn glowed, magically closing the doors behind her. “So I take it you’ve figured out where I was this afternoon?”

“All of Equestria knew where you were! And this is far from the first time we’ve had to watch you get so big since our return!” said Luna as she paced around Celestia.

“Story after story of you growing to the size of an enormous titan, smothering entire cities beneath thy bosom! Patrolling over the landscape, completely nude! Setting schedules to all this smothering, where our citizens have come to expect it! Even now, you return from one of these perverted gigantic outings! What has spurred you to turn all of Equestria’s landscape into your plaything? To have caused you to sell yourself out as a common concubine for the amusement of the citizens?”

“Lulu, relax,” said Celestia once she was finally able to get a word in. “It’s a combination of the spells ‘Size Shift’ and ‘Harmless.’ I’ve never hurt a soul for as long as you’ve been away.”

“That is hardly the point!” said Luna, stomping her hoof as she raised her voice. “We would know you were above such atrocities! But this is hardly much better! We are to be the pillars of strength and power, not objects to be lusted over!”

“We were lusted over ever since we became royalty. Remember the ‘Ancient Delights’ stories of two thousand years ago?”

“Tia!” Luna shouted with a soft blush coming to her cheeks.

With Luna still fuming, Celestia’s hand came to Luna’s shoulder, calming her a bit. She was still sneering up at Celestia, but at least Luna didn’t look like she was about to explode.

“Lulu. You and I both know how much we influence these ponies as the matriarchs of Equestria. We’re big, and thus, big is beautiful. I’ve just found a way to do it that makes all of our subjects happy.”

Though Luna was still angry, she made no attempt to move Celestia’s hand. “You call becoming a giant and mushing cities under your breasts being a matriarch?”

“Of course.” Celestia’s hand began to slowly stroke up and down Luna’s arm. “It is not enough for them to know that their princess will always be there for them. They have to know that we love them. I’ve chosen to show the love more physically than in the past millennia now, you see?”

Luna subconsciously leaned into Celestia’s hand. “And what in Equestria made you want to become a titan? The things I’ve seen about how big you become, Tia… You dwarf mountains! Even Dragon Lord Torch would be but an ant compared to you!”

Celestia chuckled. “There’s a rush to it, I’ll admit. And the bigger I get, the better it feels. I’ve tried to find a delicate balance without going overboard.”

The blush returned to Luna’s face, her eyes drifting towards Celestia’s hand as it rubbed across Luna’s arm. “So you could be even bigger?” Luna asked, only catching herself after she’d already said it.

Too late; Celestia’s grin had gone from ear to ear. “Why Luna, I had no idea you still felt the same kind of urge after all this time.”

Luna quickly turned away, sticking her nose up in a sneer and pacing towards the wall. The blush on her cheeks had only grown hotter. “I-I do not! To even think that I would commit such debauchery is laughable! I am a mare of beauty and grace, not a… a giant!”

Celestia couldn’t help but notice that Luna’s ass was giving a soft jiggle as Luna paced away in embarrassment. Celestia had always taken little cues from the eons they’d ruled together of how Luna was really feeling at any given moment. That little booty shake was one such cue. The common excuse was that one of the servants had sewn her dresses a little too small, or that Luna just liked them tight. But Celestia knew better. And it was fun watching Luna get so flustered.

Celestia stepped up behind Luna, suddenly grabbing Luna’s butt with one hand. It made the blush on Luna’s face light up brighter than the hallway’s torches. She whipped around to admonish Celestia, but was cut off by a sudden kiss.

With a gentle push, Celestia slid Luna’s shoulders into the bookshelf built into the wall, lips locked with her little sister. Luna’s hands grabbed Celestia’s arms with a tight grip, her dark blue bust pushed on by the far more impressive white pair. It wasn’t long before Luna’s grip softened, even trembled on her sister’s arms, melting in Celestia’s embrace.

“Tia…” A soft whisper gave way to Luna’s hands sliding to Celestia’s shoulders, whimpering with a sudden submission. Luna’s eyes closed, leaning back against the books and passionately kissing Celestia. She was putty in her sister’s hands as Celestia’s palms cupped the dark blue asscheeks, a slight push enough to make Luna whimper again.

And then Luna felt the distinct throb of her cock betray her lust for Celestia once and for all.

Besides how the tight dresses looked on her divine curves, Luna also liked them tight as they snugly hugged her impressively large cock and balls. On her favorite dress, the fabric curved just perfectly around her hugeness, outlining it and rubbing it constantly. It always was a delight to watch the male night guards feel “inadequate” next to their princess. Their faces always turned a hundred different shades of red out of embarrassment, jealousy, maybe even a touch of envy that this mare, goddess though she may be, dwarfed all of them in size.

This is what lead to the long-standing rumor that the royal sisters were secretly screwing each other’s brains out behind closed doors. There was no mare who could safely handle Luna’s dick but Celestia herself, they said. Even the strongest of earth ponies might be split in half by that tool. Thankfully, the sisters let the rumors run as idle gossip, letting it fade into the wet dreams of stallions everywhere. Even if the princesses had secretly soundproofed their bedrooms.

Celestia slid her lips away from Luna’s, a content sigh escaping. “I think I have a way of convincing you,” she whispered. With Luna’s eyes still closed, Celestia’s horn began to glow.

The first thing Luna heard as her eyes started to flutter open was a soft ripping, one that kept getting louder. She looked down to see that huge pair of white breasts erupting from the powerfully ripped dress, the fabric giving way to Celestia’s smooth soft skin in growing waves. There were those massive breasts, drawing ever closer to her, and her sister’s face going ever towards the ceiling…

Only too late did Luna realize that Celestia was going to demonstrate on her.

Luna opened her mouth to protest, but was stopped short by a nipple that pushed against her lips. The warm titflesh kept pushing Luna against the wall, her hands gripping the pillowy whiteness as she helplessly watched Celestia grow bigger. She was suddenly pushed harder against the bookshelf as Celestia shivered, a sudden tingling going straight up her back.

It was fortunate for Celestia that the rooms for the princesses had been expanded since Luna’s return. Sliding onto her hands and knees while she still had time, Celestia stifled a moan while Luna’s lips brushed against her nipple. The dark blue hands of the night princess gripped into the huge alicorn’s breast as it rolled Luna against her bedroom wall.

Celestia found the room becoming a little cramped at eight times her normal size, and stopped growing there. It was enough to completely encompass Luna’s vision in white. Her other senses were massaged by Celestia’s warm scent, soothing moans, and of course the perverse softness that smothered her against the wall.

Luna had given up all pretense of wanting to get away. It felt sinfully good beneath her sister’s massive tits. Her hands tried to just hold on against the masses of breast, feeling an all-too-familiar throb beneath her starry dress. “Nnngh… T-Tia, you…” she started before cutting herself off, just sliding her wet tongue across the massive nipple closest to her.

What those stallions wouldn’t give to see the sight of Luna’s dick throbbing, bigger and bigger, against the sparkling fabric of her dress. Her balls swelled as the huge black cock was massaged by Celestia’s titanic tits, their softness and warmth only spurning Luna to slam her tent forward.

“S-Sister!” Luna cried as she felt her own dress start to tear. Her breaths were sharp and short as Celestia slowly leaned her head up, letting her breasts jiggle against her sister. The starry fabric of Luna’s dressed strained against her hefty package thrusting against it from below, ready to rip at a moment’s notice. With her teeth grit, Luna’s horn glowed with a soft blue aura, using her magic to impatiently rip her dress away.

Celestia chuckled to herself, leaning forward again to gently push Luna’s nude frame backwards in a show of dominance. “I knew you still wanted me after a thousand years.”

Luna responded by pushing her swollen cock between Celestia’s huge tits, staring up at the large face of her big sister. Her hands gripped into Celestia’s nipples, grunting as she felt every inch of her huge cock massaged by the pleasant warmth of the large cleavage.

It was enough to cause Celestia to start moaning, pushing her tits together around Luna’s shaft. Her numerous giant smotherings had made her cleavage nice and sensitive. And it had been quite a while since anypony was bold enough to try and titfuck the world’s most famous pair of breasts. While Celestia was too big even for the likes of Luna, it was also one of the few times Luna herself had felt all of her massive meat being tended to all at once.

Luna could hardly deny how incredible it felt. She had always loved Celestia’s breasts, and the hundreds of times she’d stuffed her cock between them were never like this. The pleasant slap of her balls against her sister’s softness was delightful. The warmth of her cavernous cleavage was delicious. With another audible grunt of lust, Luna’s cock squirted a substantial load of precum all across Celestia’s rack. Enough to stain the massive tits that it was so heavenly sandwiched between in a few gallons of the stuff.

Being a god meant god-sized releases. And that was when Luna was at normal size. Yet another reason Luna had kept that cock away from her mortal subjects. Even if somepony could manage to hold in Luna’s massive marehood, they’d still be flooded when Luna inevitably came. Luna simply couldn’t have a population of ponies bloated into immobility with her cum, appealing as the thought was.

Celestia was a different story. Luna pumped her cock knowing that her sister could stand it, knowing that she was capable of handling the most violent and messy of her orgasms. Seeing Celestia that big, though, was giving Luna all kinds of filthy ideas. Celestia had already said how much better it felt when she was bigger. Luna just had to try it.

“Sister, please… indulge us with – aanh! – with the spells used for this growth! This is… UNH!” Luna’s horn began to spark with its cerulean magic, bringing her eyes up towards the giant alicorn in front of her. She could already feel her balls churning with the load she was going to release, and needed to get bigger quickly if she was going to have any hope of getting it off in time.

With a coy smirk, Celestia’s large fingertip reached forward and pushed on Luna’s horn, stopping the sparks. Luna’s thrusting even began to stutter to a stop, the expression on Celestia’s face already telling Luna that she wasn’t going to like what was coming.

“Oh, so now you want to know? Then I’ll be happy to oblige you,” said Celestia, giving Luna’s horn one last teasing flick. Agonizing as it was to deny herself the pleasure of Luna’s throbbing meat, Celestia began to pull herself backwards, the massive tits slowly parting and releasing the slick alicorn cock from between them, still stained heavily with Luna’s sticky pre-cum.

Luna could hardly believe what she was seeing as Celestia pulled her tits away from the large dick. But more than that, she could still feel the base of it throbbing and aching to be indulged, the inevitable still bubbling just below the surface. Her hands grabbed onto her shaft in a helpless attempt to hold it back, twitching and pulsing with her heartbeat.

“Tia! NNNGH! Y-You can’t do this to us! If we release now, we’ll-!”

Celestia cut her off by bringing her favorite spell book into view with a pop of her magic, nonchalantly making it float neatly onto the bookshelf behind Luna. “You’ll want to take a look at the bookmarked pages. ‘Harmless’ and ‘Size Shift,’ remember. They’re the spells that keep me going.”

“You wouldn’t! You- AANH!” Luna cried out, clutching her cock and thrusting forward into her own hands. She knew it was coming now. As much as she was gritting her teeth, sweating, and desperately trying to fight it, it was coming. She could see her huge swollen balls pumping the first bits of her load, a single long stream blasting forth onto Celestia’s tits.

Celestia slid a finger down across her boobs, getting part of that load from her cleavage. She dragged her tongue across her fingertip in a long, slow pull. The divine taste of Luna’s seed flooded into her mouth in an instant. Celestia almost purred with delight from the flavor as her horn glowed once again. Her lips curled into a smirk as she watched Luna helplessly try to hold on.

“Have a good night, Lulu.” And then she was gone with a teleport burst.

“Tia! NNNGH! G-Gonna… AANH! T-TiaaaAAAAAAAAAAAAAAUUUUUUH!”

The release was instant and intense.

A tidal wave of Luna’s hot, creamy cum exploded from her tip, gushing her back against the bookshelf with the force of a cannon. Wave after wave of a massive stream of her seed flew everywhere across the room, staining the entire bedroom in a flood of pearly white. Luna’s lust spiked, the need inside of her built up into a soul-consuming desire. What little of Luna’s mind wasn’t clouded in a fog of lust was torn between cursing Celestia or praising her for the rush. She was screaming in the throes of orgasmic pleasure either way.

Her cock had a mind of its own, still cumming like a fire hose, sparing nothing from its touch. The soundproofing on her bedroom and the magic locks on her door were all that kept anypony else from being awash in the seemingly endless river of alicorn spunk. All Luna could do was hold on as her titanic balls finished their cosmic release and mercifully emptied. That is, if they would ever be empty.

Mercifully, the divine orgasm finally did come to a stop after what felt like centuries of being trapped in intense bliss. Luna slid down against the bookshelf and panted hard, covered from mane to hoof in her own massive load, along with everything else.

“Blast you, Celestia...” Luna spat as her eyes opened to survey the scene. Her cock drooled out the final few droplets of cum into the thick lake beneath her as she saw just how powerful her release had been. Except for the bookshelf behind her, Luna’s room had been completely covered in white. Her bed, the paintings on the walls, the furniture, the dresses… Nothing was not covered in a thick layer of white alicorn paint. Even the floor she slumped onto was a foot deep in the stuff.

Luna slowly tilted her head up to that spell book Celestia had mentioned moments before leaving her to her sticky fate. The pages glowed a dark blue as she brought it before her, starting to study it. So this was what all the fuss was about. This was how her sister had compelled herself to become a titan unlike anything before her. She could only read so much before the overwhelming scent of her flooded bedroom drew her attention away.

She was going to have a long night ahead of her.

Luna’s heart beat against her chest as she walked through the woods at the base of Mt Canterlot. The sight should have been a calming one for her; the moon shining its pale light, the stars twinkling down onto the ponies who tucked themselves in. But this was going to be far from an ordinary night.

She’d spent the entire night a week prior cleaning up her bedroom. It was a minor miracle that she was able to get the cum stains off of it all before anypony would notice, thanks to a copious amount of magic. It had deprived Luna of an entire night’s worth of other work, and Celestia’s crude smirks and jokes about the mess for the rest of the week were no help at all.

Still, the rest of the nights this past week were good ones. Luna had taken time to try those spells in private, and found they were everything Celestia claimed they were. Perhaps even more, since Luna almost risked staining her bedroom a second time after managing to reach fifty feet tall in private.

Just thinking about this night was enough to send a different kind of shiver up Luna’s spine. If what Celestia had said was true, then what Luna was about to do wouldn’t cause anypony harm. And it was already very common for these citizens to expect their princesses to be big, she told herself. Celestia had taken the last millennium to get the entire sentient population of Equus used to the idea. Besides, the city of Canterlot was built on a slope, perfect for her whims.

Luna’s assurances were doing little to calm her nerves. What she was about to do would forever change the perceptions ponies had about her. She took in a few deep breaths, wondering if this is how Celestia felt the first time she did anything like this.

Making sure that the area was clear first, Luna took off her dress and laid it on the ground. She was already nervous enough; the last thing she needed was somepony interrupting her. Her magic levitated two small pieces of parchment in front of her, each with an incantation of the two spells. Softly, Luna read the words for the “Harmless” spell and sent her magic through her like a shot.

A large tingle went up Luna’s back like a sudden chill as the spell took its hold. Her wings momentarily fanned out, the tingling sending a sudden jolt through her impressive crotch. She even felt a nice little bounce in her ass. Even through all of her tests in the last week, she still hadn’t quite gotten used to that. Just to make sure, Luna reached her hand out to a nearby tree and gave it a good shove. Her strength was such that it should have uprooted the entire tree from the earth, but it didn’t move an inch.

Luna had to steel her nerves as the moment approached. She flipped to the second scrap of parchment. This was what it had all led to. There would be no going back once she cast this spell. One last deep breath. Her hands slowly curled and uncurled. She softly recited the incantation.

“Size Shift.”

And Luna began to grow.

It was tentative at first, slowly building to double her height, growing to twenty feet. She poured more of her power into the spell, growing faster. Luna hit thirty feet, and was stretching past fifty feet moments later as she felt the changes wash over her. She watched the tops of the mighty trees around her get ever closer until she began to brush past them. The branches bounced and swayed across her body as the spells kept her from breaking them, dragging across her breasts, soft jiggling ass, and her groin, which had already begun to throb as her nervousness turned to anticipation.

A particularly big branch slid its way between Luna’s asscheeks as she grew past it, prompting a sudden grunt from the huge alicorn. She knew that her nerves would be more sensitive at this size, but nothing like that. And she was still so far from big enough! Luna looked down, seeing the tops of the trees slide past her huge tits, then up at the mountain that held the city of Canterlot.

Luna’s doubts began to further wash away thanks to that lovely little branch. She poured her power into her spell and grew faster still, her horn’s magic lighting up the night sky. The tree trunks bent around her hooves, her cock pulsing with the sensations of every little gust of wind or brush of her mane shooting delight through her body. Her thick black marehood had been erecting ever since her spell began, and now it was getting closer to being its true size. The size that nopony except Celestia had truly had the honor of seeing. Her moans echoed into the night, the city and the castle getting closer and closer.

The citizens of Canterlot had felt the rumbles in the earth, that distinctive magic in the air. The more affluent sections of the city, especially, felt a jolt once they knew the earth was shaking. But a quick glance at their town didn’t show any signs of damage.

Coin Purse, with an annoyed scowl, sat back down in her plush chair, her coifed brown mane not moving an inch out of place. “Celestia having some of her fun in the evening with the town?” she said with a snooty up-turn, brushing the frills of her expensive red dress until they were straight again. “Tut-tut. She may be the princess, but she has no manners for the schedules of the common citizen.”

The nervous clearing of somepony’s throat nearby turned Coin Purse’s head. She saw her old servant staring through the silk curtains at something on the horizon.

“Er, Madame Purse, beg pardon, but that’s… N-Not Princess Celestia.”

“What?” Coin Purse quickly rose from her chair again, marching to her mansion’s balcony and throwing open the door. “Now what could it be if not…”

Coin Purse’s words fell out of her throat as her jaw hung open, staring into the starry sky.

There was the magnificent form of Princess Luna, bigger than the entire mountain. A spark of magic flicked from her horn as she towered over the entire city, staring down at the buildings below. Coin Purse could have sworn she saw a faint blush fading from her cheeks, but it was outdone in an instant by her much more impressive alicorn cock. That throbbing monster could swallow the whole castle down its tip! And the scent of her musk was already starting to flow across the town.

Many a pony had come out to see the commotion as the rumbling momentarily stopped, only to be greeted with the same towering image. Their gorgeous princess of the night, standing tall over their city, with a cock that could put even the most studly of earth ponies to shame with its size. Nopony quite knew what to make of it, all standing in the streets and staring with a mixture of surprise, fascination, and the odd tingle of lust.

Luna, for her part, could feel her heart about to beat out of her chest again. She hadn’t even really moved yet, and she could already feel her nerves firing with little bits of pleasure all across her body. She looked towards the castle, scanning for her sister’s balcony, wondering if she was watching. She was about to show every one of her subjects what she’d only shown Celestia for millennia. She could only hope it was worth the wait for them.

Without a word, Luna began to lean forward. The mountain groaned as Luna’s hands braced themselves on the rocky slopes. The massive black cock descended from on high towards the town with a rumble of its own. The waterfalls that poured from the bottom of the city drenched Luna’s titanic balls in a cool rush, causing her to lean lower in a sudden jerk, slapping her shaft down against the city.

“UNNNH!” Already, Luna’s dick felt incredible as it rubbed against the tops of buildings, into the streets and on top of the ponies who found themselves unable to do anything but gawk at their princess. Any worries they may have had were quelled as they saw Luna’s monstrous cock push forward and pull backward over the cityscape. Despite its fantastic weight, the huge black tool wasn’t laying a scratch on anypony; it was only filling them with the same urges that Celestia’s tits had always done.

If the musk of Luna was powerful before, now it was overwhelming. Wealthy socialite and back alley pony alike felt their lust spike as the musk filled the air. Coin Purse’s mansion was one of many buried beneath Luna’s shaft, and the normally self-composed pony was pinned to her balcony, the enormous shaft rubbing across her entire frame all at once as it slapped against the mansion. She had already taken to kissing and licking the tool as it pinned her, unable to think of anything else.

Luna’s heavy nuts slapped against the bottom of the city as she kept thrusting, the waterfalls pouring down more of that delightful water across them. The tip of her cock pushed against the castle itself, the night guards pinned to the stones as she wouldn’t give them a moment’s peace from her passions, grabbing and holding onto the flare for dear life and licking just as hard. Her vast, expansive cock was fucking the entire city into submission.

In all of the millennia, Luna had never felt anything like it. She suddenly got it. Why Celestia would go out and be a giant. Even if that business about being a “matriarch” was true, this rush was more than enough to justify this magnificent size. Luna’s cock likely weighed more than the city itself, and the mountain it hung on was a plaything for a real goddess like her. She kept pounding her dick across the city, faster and faster, making the town quiver with the need to be dominated. It was a rush of power, of dominance, of pure unaltered perversion, and Luna was loving every moment of it.

Her hands grabbed onto the top of the mountain with a loud clasp, drawing out a long guttural moan as her powerful, immense dick slammed against the castle. Even with the “Harmless” spell, Luna’s thrusts were still enough to shake the whole mountain to its core. The castle and the city beneath her vastness rumbled and shook from her delight, the endless streams of water below spilling onto Luna’s monstrous balls.

Coin Purse had lost herself completely. What was moments ago a socialite that examined every facet of her appearance under a microscope was now a sweaty, grunting, horny beast that was grabbing onto whatever she could reach of Luna’s mighty cock. Coin Purse’s nethers quivered as she pushed her tits against the black pillar, having ripped off her own clothes in a furious primal heat. The warmth of the cock above her flooded through every fiber of her tiny body, unwilling or perhaps unable to contain herself. And Coin Purse was far from alone. Everypony in her mansion, even those that couldn’t reach Luna’s titanic meat, were ripping their clothes apart and fucking in earnest. The pegasi watching on the clouds around the city were openly masturbating, one particularly horny couple even fucking in mid-air. The pheromones of the goddess were just too powerful for any ordinary mortal mind to resist.

Suddenly, there was another rumble. One from directly below the city. One that made Luna suddenly shiver with delight.

For a moment, Luna’s voice caught in her throat. Being so enormous meant that even the first spurts of her pre-cum took seconds to climb all the way through the titanic cock. She felt the intense pleasure rocket through her, finally gushing free onto the castle itself. The immensely sticky load covered the structure, top to bottom, more of it leaking onto the town below. Luna couldn’t stop staring. It was beautiful. The most beautiful thing she had ever seen.

Luna’s hands held onto the mountain with as much power as her restrained might would allow, drawing her cock back and pounding it across Canterlot. Thousands felt the cock thrust over their bodies, even more feeling the rumble from below as Luna’s balls smacked into the bottom of the city and the base of the mountain like enormous wrecking balls. The world had witnessed her wrath before. Now, it would witness her joy.

Luna couldn’t stop it now. She felt it practically boiling inside of her. This load would be beyond imagination. Beyond mortal comprehension. And every thrust brought Luna closer. He guttural grunts became louder, the quiet night pierced by the low moans of the horny goddess. She could hear the lustful cries of her people. They were begging for her. Begging to be loved by her forever.

The castle was already coated. The scents of her musk and her pre-cum were intense. The heat kept rising.

Luna didn’t fight it. Not this time. This time would be her ultimate release. Her screams grew in pitch and volume by the second. She felt it flowing up her titanic black cock. She buried her vast tip against the castle. Her pulsating shaft still smothered the town below. And her balls crashed into the mountainside with the fury of a thunderstorm.

At long last, Luna finally began to cum.

The impossible flow of Luna’s seed burst from her tip against the castle. Cum loads the size of the deepest lakes in Equestria burst forth every moment, coating the castle in mere moments. The loads just kept coming, flooding down into the streets below on Canterlot’s slopes. The streets crowded by horny mobs were suddenly washed over by a tidal wave of white alicorn cum, an amount too big to measure flowing across the whole city.

Luna was far from finished. In fact, her cumming grew stronger as her balls began pumping out more of her load at once, pulses of immense pleasure making her scream loud enough to be heard as far away as Griffonstone. The citizens across all of Canterlot were showered in the sea of seed, floating higher and higher in the growing tide as Luna’s cock just would not stop cumming. Not even the mountain itself could contain it, flowing down the sides like an erupting volcano, starting to pool around Luna’s hooves deep in the forest below.

Load after load, lake after lake of cum flowed from Luna’s titanic cock for what must have felt like eons. Only after she felt mere thousand-gallon bursts pump from her balls did she look at Canterlot from her perch.

It was even thicker than her bedroom. A dribble of her cum the size of a river flowed from the bottom of Canterlot in place of the waterfalls. What few buildings weren’t completely submerged in her immense release were covered in horny ponies that had been washed onto their roofs. Many were savoring the taste, drinking it from the vast pools and licking it from each other’s bodies. There was plenty to go around, after all. As thick as the sea of cum was on Canterlot, still more was flowing down the mountainside, the trees in the forest at its base having their trunks coated.

Luna panted and gasped for breath. She still felt like she was in orgasm, even as her cock’s loads dribbled down to only a few gallons before finally stopping. She looked and looked across the cum-covered city, watching her people call her name, worshiping her and her incredible cock.

In spite of herself, Luna could not help but grin, leaning in once more to join them in licking up part of that flood. It was going to be another long night of clean-up.

Celestia grunted in her bedroom. What little she could see out of her bedroom window was the most awe-inspiring scene that she’d ever witnessed. It was just as much of a rush as making her titanic tits smother a town, and Luna had done it all by herself. Celestia had the good sense to keep her doors and windows closed, but the temptation was there to let Luna’s flood in.

After three sensational releases, Celestia had finally begun to calm down, sitting up on her stained sheets with a content sigh. She rubbed one of her sheets over her crotch while her horn glowed, magically bringing over a blank scroll and an ink quill, beginning to write with a perverse smile on her face.

“My dearest niece, Cadance…”

Author's Note

The madness is spreading!