Twilight was surprised at Thorax's energetic thrusting, despite the slight resistance Twilight's ass was putting up, he roughly forced his way in every time and wasn't stopping for love nor money, though love would have made a tasty snack at that point.

Twilight was loving it, Thorax's cock filled an empty space she didn't know that needed filling until then, the full and complete feeling she got from being fucked in the ass pleasured a depraved part of her brain that she didn't even know existed. She needed this anal sex. Thorax was undeniably enjoying himself as well, the tight hot walls of Twilight's ass squeezed every inch of cock he had to give, almost as if trying to milk the cum out of his balls. Thorax started going faster, his hefty nuts slapping against Twilight's ruined pussy and adding a third layer of pleasure. There was the pleasure of being fucked in the ass, the pleasure of her pussy being smacked by Thorax's fully loaded cum factories and of course, the pleasure that she was doing her part for the hive.

Again, Twilight felt Thorax needed a little verbal encouragement "Come on..." she said "Your brother had more of an effect on my ass and he wasn't even fucking it! What, am I too much for you? Is my snug fucking ponut just squeezing you too tight? Stop treating my ass like it's so delicate and fuck it!" It seemed Twilight's words worked, though not quite in the way she had intended. Rather than becoming aggressive and fucking her even faster, he instead moaned out and prematurely blasted his entire load deep into her ass, while that was the eventual goal it didn't really paint a great image of him as a breeder.

Chrysalis rolled her eyes and said "Thank you Thorax, that will be all. Now please go away and work on your endurance, that was just a pathetic performance".

Thorax gulped and said "Y-yes my queen" before he yanked his cock out of Twilight's ass and took his leave.

"Now then..." said Chrysalis "Time for the final part, the part where I add my eggs to the mixture". A bright green flame enveloped Chrysalis before dissipating to reveal... that she looked exactly the same, Twilight was confused until she saw the one thing that had changed. Chrysalis no longer had a pussy, it had instead been replaced with what looked to be a long stiff appendage with a hole at the end, not exactly a cock, but something similar. The testicles were also not quite right, something about their shape seemed just a little off.

Chrysalis said "It's not a dick, I suppose you could call it an ovipositor, the things dangling between my legs aren't testicles, they are my ovaries. Now we are going to join together and cocoon, throughout the duration of our cocooned sleep I will be pumping every single fucking egg into your ass to mix with the spunk in there. Ready?"

Twilight nodded and said "Always my queen"

Chrysalis got down from her throne and just like the other two, got behind Twilight who remained obediently still. Being so tall, Chrysalis had no need to mount and simply stood over Twilight as she inserted the ovipositor as deep inside her ass as she could, even though it wasn't a penis, Chrysalis had to admit there was a sensation of pleasure when penetrating the pony beneath her. When she had bottomed out, both her and Twilight were locked together and encased in a large cocoon, countless eggs started being pumped into Twilight's ass. A pumping that wouldn't stop until they were woken from their slumber, one week later.

The End

Author's Note

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