Chapters As Spike got off the train, he was surprised to find Twilight was waiting there for him. "Hi Spike! Welcome home!" Something was strange here.
"Uh... hey Twilight, you don't usually come to meet me at the station, what's the occasion?"
"No occasion" said Twilight "I just thought it would be nice for me to come and meet you" Spike was confused, Twilight wasn't usually this... nice, on top of that confusion also came worry, because if someone who was usually not very nice suddenly started acted nice it could only mean one of two things. One, that something very good was about to happen or two, something very very bad was about to happen. Spike was scared either way.
"Come along" said Twilight "Luna will be raising the moon in a few hours, we better get back home yeah?" Twilight turned around and began walking, when she was certain Spike was following close behind, she smirked to herself and added a deliberate and specific exaggerated motion to her walk that made her hips sway and her butt jiggle, not to mention flashing her tight asshole for all but half a second. Spike, being quite a fan of large buttocks, noticed this straight away and began to sweat. He didn't know that Twilight was doing it deliberately to try and rile him up, all he knew was that in front of him was a nice round ass that he had spent many a night fantasizing about.
Come to think of it, Spike had noticed that ever since fucking Luna and Celestia, his dreams about the derriere had lessened and he felt a lot more relaxed in his day to day life, perhaps Luna was being serious and wasn't just a horny princess after all. They reached the door of the castle and went inside, the inside was surprisingly warm, Spike could feel his energy levels rising already. Twilight had raised the temperature inside the castle for that specific purpose, Twilight was determined to get get Spike in her ass the next day and wanted to do everything in her power to make sure he would be up for it.
"Spike, would you mind coming to the library with me? I was thinking of reorganizing some books and I want your opinion, that is if you're not too tired". Since when did Twilight ask for stuff like that? She never asked for anything, she always told. Then again, Spike wasn't particularly doing anything at the moment, so he didn't see any reason why he shouldn't help out, at least she had the courtesy to ask rather than tell.
"Yeah why not, I'm not really busy with anything at the moment, don't you usually do stuff in the library by yourself though?"
Twilight giggled and said "Well yes Spike, but there's a reason for that, a rather embarrassing reason. However there isn't really any way of avoiding it, so I'll just have to hope you don't laugh at me" Spike had no idea what she was talking about until he saw the doorway to the library. This had to be some kind of cruel prank. The doorway wasn't very narrow, but narrow enough that any princess would struggle squeezing their fat rears past it, Twilight included. What the fuck was going on?
Twilight didn't waste any time and started to walk through, as Spike had predicted and as Twilight knew, she had to stop walking when her enormous ass struggled to squeeze through the tight space that most other mares would have considered not to be a problem. Most other mares weren't princesses with well endowed backsides. "Ugh, her in lies the problem, this happens every time. Is my butt really that big Spike?"
Uh oh, Spike had to answer her question in a way that didn't make it sound like he had fapped to her ass regularly ever since her transformation from unicorn to alicorn had given her some extra junk in the trunk. "Um... well, I've never really noticed the size of it, but it certainly looks like you're having trouble there... maybe the doorway is just that narrow?"
Twilight smiled, Spike was such a fucking pussy. "Well the others seem to walk through here just fine" said Twilight "Anyway, I would teleport but I'm just really tired, I don't suppose you'd mind giving me a push would you?" There was no way she could be serious, this had to be a joke. When Twilight just stood there patiently, Spike realized that she meant it.
"Um... OK" said Spike, as he nervously approached that perfect purple ass with his arms forward, ready to push her through the door. He placed his claws on her big booty and began to push, Wow, she was properly stuck in this doorway, had it always been this narrow or had Twilight somehow gotten even bigger?
"Come on Spike" said Twilight "Put your back into it, otherwise I'll never get into the library!"
"There we are" said Twilight, now come on, the sooner we start the sooner we finish..."
As time progressed, Spike was teased more and more, there were several occasions where she had to bend over for some reason, or she would accidentally brush up against him, all little things that had left him struggling desperately to hide his erection.
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! :)
Spike was the luckiest dragon in the world. He loved babes that had a big bodacious booty to play with, he lived with ponies where almost every single one of the mares had just what he was looking for in a sexy ass and to top it all off, he had the best experience a dragon with a penchant for massive rears could possibly ever hope for in his entire life. He had the greatest privilege of pleasuring and being pleasured by two of the biggest asses in all of Equestria, Princess Luna and Princess Celestia.
On the way back home, he just couldn't imagine what he had done to deserve such a thing. Luna argued that it was for the sake of his mental health, as his dreams were becoming more and more focused on that particular body part she feared that the desire would ultimately consume him and he'd end up doing something he'd regret. Spike understood, but also didn't completely buy into that, it just sounded like complete BS.
Whatever Luna's position was, Celestia had no excuse. She was just dying to get some dragon dick in her derriere, she had dressed up as a french maid for the whole thing, that's not a princess assisting loyal subjects with their problems, that's a princess saying "Please fuck my ass, I'm so desperate"! What he didn't realize however was that Twilight, his mother for all intents and purposes, would have gladly given him some booty action if he had actually had the balls to admit it to her. She knew it was strange considering she had raised him ever since he was hatched from an egg, but the only thing that stopped them was their relationship dynamic, there was no blood relation, he was a dragon!
Twilight had seen everything he and Celestia did, so she came to a decision and made her mind up. If Spike wanted ass, he was gonna get it, only he wouldn't have to go to Canterlot this time. He'd stay right at home with her.
