The following morning Spike woke up feeling very tired, but the inside of the castle was still really warm, he'd be up and ready for anything in no time. His night was restless, his mind had seen fit to conjure up what was possibly the most torturous booty-filled dream he had ever had, it was a wonder he hadn't blown his load in the night and his morning wood went down relatively quickly. He was lucky Luna hadn't seen his dream, she would have thrown an absolute fit knowing that fucking two princesses still hadn't quelled the burning lust in his loins. As he came to his senses, he noticed Twilight was there with him with breakfast, a perfectly ripe fire ruby.

"Whoa, thanks Twilight!" Spike quickly chowed down on the gem, so delicious.

Twilight said "Well, I figured you might like that, since Rarity took the one you had kept for yourself all those years ago"

Yeah, Spike remembered that. What did he see in Rarity? For the element of generosity she sure was the most heartless cruel and self-serving bitch he had ever met, what kind of fucking mix up happened there? The only thing he saw in Rarity now was her ass, but that ass wasn't worth a relationship with her, certainly not. Spike swallowed down the last few chunks of fire ruby, it was the tastiest gem he'd ever eaten.

Twilight smiled, knowing that he had enjoyed his breakfast. Time to initiate phase two, he was horny, energized, belly full and balls full, though that last point was something she intended to change. "Right, now that you're awake an paying attention, we need to talk" said Twilight. Spike became nervous, whenever anyone said "we need to talk" it was never a good thing, nevertheless he sat still and listened.

Twilight said "Spike, I saw what you did with Celestia". Well, fuck. Spike was really in the shit now, Twilight had seen him fucking her mentor, he couldn't imagine anything good coming of this. "I'm not annoyed or anything, far be it from me to decide what you stick your dick into, to tell the truth... I'm a little jealous". Whoa, that took a turn, Twilight was jealous? Of who? Celestia or him? Twilight continued to talk "I mean if I had known you liked big butts so much, I would've offered up my ass on a fucking silver platter".

HOLY MOTHERFUCKING WHOA. Spike didn't know what to say, so he said the first thing that came to mind "OK... but your my mom... kind of?" What a dumb shit.

Twilight just giggled as she approached Spike and pushed him on his back before saying "Well then be a good boy and call me mommy". Spike considered himself lucky that he wasn't already cumming all over the place, this was so so hot. Twilight stood over him then turned around and without any buildup whatsoever just smashed her ass down on his face, wiggling it from side to side "Yeah..." she said "You like my ass you little fuck? Do you like mommy's ass?"

Spike just nodded, to which Twilight gave a little chuckle, especially when she saw that he was already hard as a rock. She lifted herself off of Spike's face then moved forward until her hips were directly above his cock, Spike knew what was coming next, but didn't know if he'd be able to hold in his load. Twilight began to descend and maneuvered herself until the tip of his dick was lined up with her asshole, without a moments hesitation she pushed down and hilted his cock in her ass with ridiculous ease.

Both Spike and Twilight were amazed, not just that he went in so easy, by the reason as to why he went in so easy, he was a perfect fit. Spike's girth stretched her out nicely and the length was just enough to push all the right buttons, Twilight moaned with satisfaction at being so wonderfully filled in all the right ways. Spike on the other hand was feeling the warmest grip on his dick ever, her ass was almost comforting, pretty much welcoming the presence of his cock with it's heat and it's intense but not painful grip.

Twilight grinned and said "Such a good boy..." before beginning to bounce up and down. Spike was enjoying himself far too much, the feeling of such a great ass as it seemed to almost swallow his cock hole as if it couldn't get enough of it, Twilight's cheeks were shaking and jiggling with each bounce, it was all so great, which is why a few moments later he groaned as he blew the hardest and largest load he had ever blow in his life, Twilight's butt was instantly filled with hot virile dragon spunk. She stopped bouncing and just sat on his lap, his dick all the way in a plugging her asshole as she sighed with content. It may have been quick, but it was fucking awesome, besides, it wouldn't always be like that, Spike couldn't wait for what the future held...

-years later-

Spike must have died and gone to heaven years ago, because his life was now just a daily dose of constant dizzying endless conveyor belt of ass fucking. After Twilight had finally gotten his cock inside her butt all those years ago, she started to share him around. The rest of their friends all got their butts plundered, Luna and Celestia still had fun with him, Twilight had even managed to convince Cadance to take him on every now and then. Shining Armor was surprisingly OK with it on the condition that Cadance gave him the same treatment with her ass. Even Lotus and Aloe, the two spa ponies, would occasionally jump at the chance to have Spike pound their asses, which led to some very kinky threesomes. Spike's life was perfect.

The End

Author's Note

Thank you Darksoul85 for this story idea! I hope you enjoyed it! :)