After what had been days of backbreaking, holewrecking and jizzguzzling labor, they were finally done. They had achieved the impossible, at the cost of drowning several rooms of the palace in untold gallons of slimy fuckslop and tainting the entire building with the heady, reeking stench of the purple bullcolt's monstrous sack.

Princess Luna had passed out two hours ago, Twilight's gunky semen dribbling from her plump lips. One of Twilight's careless cockslaps had left a bruise across her cheek. The remains of what had once been a sturdy couch could be seen, crushed beneath her jizz-distended, swollen belly.

Cadance was barely recognizable in a pile of rubble, ruined to nothing more than another cum-stuffed, bloated jizzblimp of a pony fucksleeve. The brutal throatfucking had left a number on her. And on her surroundings. All it had taken was what, six or seven thrusts, and Twilight's cum-churning, swaying wrecking balls battering against the pink cow's massive **** had been enough to jackhammer her hard enough into the wall behind her to bring it down. And it wasn't as if any of that had slowed down Twilight's obscene, overpowering fucklust. Cadance was surrounded by a dozen jizz-blimped cuties who just so happened to be in the wrong room at the wrong time, and had subsequently received a few thousand gallons of reeking fucksludge pumped down their throats as reward.

Princess Celestia was barely holding on.

But.

They had done it. Twilight Sparkle was fast asleep, and for the first time since god knew how many months his beastly monster of a horsecock had been pacified. Flaccid. Soft. Tamed. For once Twilight's oppressive, domineering horsecock had met its master. That it would take months to clean this mess up was acceptable. After all, the jizz-drowned room they inhabited belonged to none other than Princess Celestia herself, to none other than the obscenely curvy, cow-titted Goddess of the Sun, formal ruler of the world and Twilight's mentor, advisor and basically his second mother. One might wonder if Celestia had always been gifted with a body to make pornstars and models alike jealous, or if all the days she had spend bobbing her head up and down Twilight's ****, subsisting on a diet of the slimy, glue-thick seed Twilight pumped out in reality-defying quantities had merely left its mark, and given her the body of a fuckdoll that was just barely capable of keeping up with Twilight's needs.

Princess Celestia would have smiled, if it weren't for the fact that her plump, dick-sucking lips were still wrapped around the terrifying girth of the purple, monstrous fuckspire which languorously protruded from Twilight's crotch in all its flaccid glory. Balls-deep, with no chance to escape. Even in his  sleep, Twilight's leg had a firm lock on Celestia's skull, and kept her right where he wanted her: With her throat cocksleeved, distended by the fattest **** in the entire world, as if she had no other concerns or duties than being Twilight's jerk-off aid, suckslave, ballguzzling sweatsucker or whatever else the femcolt demanded at a given time! She shuddered pathetically.

But this time Celestia had won. Hours. Days. Over a whole ******* WEEK of draining Twilight's gargantuan jizztanks over, and over, and over, but Twilight was finally finished, and not one moment too soon. As much as Celestia hated to admit it, her entire body was straining, creaking, struggling. The entire extent of her power had been necessary just to keep Twilight's jizz down, tightly compressing lakes worth of semen further and further and further, until entire lakes worth of reeking, city-flooding and terrifyingly virile ballgunk had been compressed down to the size of a mere tablespoon. And even with these powerful spells in place, and the strength of a goddess supporting them, Celestia was swollen to the point of near-bursting. Even like this she just couldn't keep up. How humiliating. The power to move the sun itself across the sky, the power of a goddess who had ruled this country for aeons, and now it was ALL in service of a certain purple jizz-factory's unending loads of semen, just to keep him from bursting tanks, flooding entire cities, or leaving thousands of girls as nothing but swollen, house-sized jizzblimps.

If there was a more humiliating fate than having to use the full extent of your godly power just to be an adequate fucksleeve, then Celestia struggled to imagine it. And it was all made that much worse by the knowledge that, even with her godly strength, she was just one more load away from being unable to sustain her spells, or straight-up passing out and ending like her broken, swollen condom of a sister. 

Ugh. Even now Celestia struggled to keep her thoughts away from Twilight's reeking, overproductive nuts.

But. She had won. For the first time since ages, Twilight was finally empty. 

...

As she heard a long, drawn-out yawn coming from none other than her 'fast asleep' personal student, Princess Celestia flinched. Oh no. Already? But--- Mhmf! Twilight's fist clenched around a sizable portion of Celestia's mane and lazily dragged her up by two or three inches. Twilight stared down at her.

****. Twilight could practically feel his nuts swelling with seed just looking at that face. Celestia's visage was a mess of smeared make-up, reeking nutsweat and precum, and a pair of bright, nervous eyes stared up at him, terrified of the prospect that Twilight was about to initiate another session of brutal throatfucking. Another session she wouldn't be able to handle. Twilight could practically feel Celestia's sense of relief as he instead opted to casually pull Celestia up. The princess' immense udders rose higher and snugly accepted Twilight's **** between them, her arms dangling weakly. Celestia's spine bent. A moment later, Twilight's immense flare popped from Celestia's dicksucking lips, Twilight released his grip and Celestia collapsed onto her immense rack. Shuddering and panting, but at least with newfound confidence that Twilight was well and truly spent.

"Hah..." Celestia was breathing heavily, her elbows wobbling weakly as she straightened herself up in the sweat-stained, jizz-drowned sheets beneath them. In her own bed, which Twilight had tainted with his ungodly jizzloads, and which would never smell sweet and flowerly ever again. Celestia's **** dragged across the mattress, as did her bloated belly. "Hah... H-how does it feel, Twil--- Hrk!" Celestia belched out a wad of Twilight's slimy nutsludge. She looked about to collapse into a puddle of jizz and sleep for a week straight.

Twilight spoke before Celestia managed to open her mouth again. "What a shame that you're already full."

Celestia's self-satisfied smirk turned into a grimace in the blink of an eye. "Hah... v-very funny, Twilight..." The princess forced a little laugh past her lips. Spit was dripping from her chin, and a long, thick strand of seed was dangling from her mouth. "No one, not even you could be insatiable enough to... after I..." She shuddered. "...d-drained you again, and again, and again, and again, and... hffff...." Celestia's gaze drifted from Twilight's monstrous flare down to these gargantuan jizz-factories, heavily denting the mattress with their obscene weight, and looking just as big as when they'd started. If not even bigger. Fuller. Heavier. "...i-it makes for a funny joke, I give you that. You ARE joking, right? ...r-right? ...Twilight...?" Celestia gulped. Her throat went dry.

...

GURGLE.