The sex was becoming increasingly intense, everyone's orgasms were building up at a frighteningly fast pace. Despite both their mouths occupied with pleasing Cadance's junk, Celestia and Luna interlocked their fingers with each others, Spike was grunting ferociously. Spike's instinct to breed had become so fierce he was practically breathing fire with how heavily he was panting, his whole body was aching from the relentless pounding he was delivering and his claws had sharpened, digging into the bed. His cocks were pulsing aggressively while his balls prepared two sizable loads to be fired into each pussy, if dragon sex was what these two wanted then he was determined to deliver his best performance.

Cadance on the other hand groaned as her artificial dick began to fire off in Luna's mouth, after two strong shots had been squirted into Luna's stomach Cadance quickly pulled out and effortlessly rammed her cock balls deep into Celestia's mouth, giving her the last two shots of her ejaculation before falling back in exhaustion, her cock disappearing into thin air and leaving only her pussy behind. Spike let out a thunderous roar as he pressed his hips forward as hard as he could, getting every last centimeter of cock inside the sisters as he could before his cocks erupted. A hot boiling load filled Celestia and Luna to the point where their bodies couldn't hold such a copious amount of fluid, the last few drops of cum being pumped into them simply leaking out of their pussies, helped along by the fact that the two had just experienced the best orgasms of their life.

When Spike pulled out, Luna simply rolled off of Celestia and fell asleep next to her, both sisters were in a comatose state that came with having their brains fucked out. As soon as Spike set eyes on Cadance however, his dragon mind screamed at him that there was one more pussy left to fill, he pounced onto Cadance, catching her by surprise as he rammed both of his dicks directly into her pussy.

Cadance screamed and came immediately, while Spike's body simply pumped whatever remaining seed was left in his balls inside her, Cadance fell asleep in ecstasy and when Spike finally pulled out, he too collapsed and fell asleep.

-hours later-

Spike returned home, it seemed that the girls slumber party had only just begun and they were giving each other make-overs. Twilight was immediately excited about what Spike's meeting with the princesses entailed, "So Spike, what was the issue? What did you and the princesses end up doing? What was it all about?" Twilight was extremely curious and even the rest of them were wondering what was going on.

Spike simply smirked as he eyed up every single girl that was in that room, Twilight included, before simply saying "Well I could tell you... but how about I show you instead?"

The End

Author's Note

Thank you osmar lael for this story idea! I hope you enjoyed it! :)