It was a beautiful day in Ponyville. The birds were singing, Celestia's sun was shining brightly, and there wasn't a single cloud in the sky!

Well... actually, there was exactly ONE cloud in the sky. A small, fluffy white one. What was it doing here on what was supposed to be a clear day?

Why, it was serving as the napping place of the captain of the weather team and self-proclaimed best flier in Equestria, Rainbow Dash! Yes, the rainbow-maned pegasus had been working hard to clear the sky that day, and so had felt that it would be alright to leave one cloud to rest on, at least until she was done with it.

With a yawn, she peeked open an eye to glance at the sun's position, hoping to catch the time. "Huh. About... two, I guess. Alright." She closed her eye and smiled to herself.

And then her eyes snapped open as it hit her. "Two!? Damn it, I'm gonna be late!!"

With that, she jumped up and dashed off so fast that the poor little cloud was violently blown to bits.

Oh shit oh fuck oh shit oh fuck oh fit oh shuck oh... wait what?

She flew straight for Sweet Apple Acres, as fast as her wings would take her without getting too close to the sound barrier (she was STILL getting complaints about the last time she Rainboomed in public). Too late, she realized that she was coming in too fast, and desperately tried to slow...

She collided with the branches of a large apple tree.

As she attempted to untangle herself, a familiar-looking orange Earth pony trotted up, shaking her head with a smile. "RD, yer gonna have to stop droppin' in like this."

"Yeah yeah..." Rainbow muttered as she finally freed herself from the oppression of the tree's branches. "Whatever you say, Applejack. So, uh, is-"

Applejack laughed and shook her head. "Yeah, he's here. Reckon yer just in time, too. He's almost done with his chores. Thought that ya'll would be late again, didn't ya?"

The pegasus blushed and mumbled something along the lines of "Don't you have trees to buck or something?"

Applejack let out another chuckle as she tipped her stetson to Rainbow Dash and went back to work. "Just don't bug him until after he's done with his chores, ya hear?"

"Yeah yeah, whatever you say mom," Rainbow responded sarcastically. Then her face turned cheerful. Nothing, and she meant NOTHING, could keep her in a bad mood long when she was about to see her favorite stallion.

With that in mind, she trotted off in search of said stallion.

Big Macintosh trotted along, a large wagon filled with buckets of apples strapped to his back. It was the last load, and while he was eager to finish, he also was eager to not screw this up. He shuddered as he remembered the last time he had dropped the load... oh, Hell had NO fury like a pissed off Applejack...

He reached the apple cellar and began carefully moving the buckets down, putting them away monotonously, until finally the last one was placed and he could relax a bit.

As he pulled the wagon back to the barn, he couldn't help but wonder... where in Celestia's name was-

Suddenly, everything went dark as a pair of hooves covered his eyes. "Guess who, big guy!"

He chuckled and decided to play along. "Lemme see... is it... Miss Twilight?"

"Nope," the voice said, mimicking his own.

"Is it... Miss Bon Bon?"

"Nope!"

"Iiiss iiiit... Miss Ditzy Do? 'Cause it sure sounds like her."

"Nnnnope!"

"Alright... then there's only one filly Ah know it could be. Is it... Rainbow Dash?"

"Eeyup!" Rainbow said as she took her hooves off of his eyes to wrap him in a loving hug. "And whadaya mean I sound like Derpy?"

Mac just chuckled again. "Ah was just messin' with ya'll, darlin'. Ya'll know that."

Rainbow pulled back and flew around to face him, smiling widely. "Oh, you. So, done with those chores so that we can... y'know... have some fun?" Rainbow half-lidded her eyes and gave him a seductive grin, making him blush (hard to imagine his face getting redder than it already is, isn't it?).

"Just gotta put the wagon away, Dashie. Then we can play." As matter of fact as always, that Macintosh.

As he got the straps off of his sides, Rainbow thought back fondly over their relationship. They'd only been dating for about four weeks. And yet... it felt liked they'd been together for years. She couldn't help but chuckle at the memory of how he had bashfully asked her out. She accepted, on the condition that he beat her in a hoof race first. He agreed to it, and the set off right then and there.

Rainbow let him win. She just wanted to see how dedicated to her he really was. And to be honest... she had had a crush on him for a while too.

And now here they were, getting ready to have a little private time. It had only been a week ago they decided to take it up a notch, and neither regretted it. A few contraceptive herbs from Zecora, and they were good to go! Speaking of which... Rainbow took off her saddle bag and got out her dosage of the bitter herbs. She grimaced a bit as she chewed and swallowed them, but knew they were worth it in the end.

Turning back to her lover, she saw him finishing his own dose. One for either of them should have been fine, but Zecora had insisted that they both take it, just in case. He noticed her looking and grinned. "Ya'll ready?"

"You know it, hot stuff!" she exclaimed as she flew down to join him.

And now, side by side, they trotted out back to a secluded little space in the woods... just right for what they planned.

The clearing they had been going to wasn't very large... to be honest, it looked like it was slightly smaller in width than the Apple family's barn. But, it was perfect for two ponies to get away from it all and be with nothing but each other. The lack of tree cover made the sun shine beautifully onto the little glade. And they knew they'd be safe from predators such as timber wolves and manticores... Zecora had shown them how to ward them off by planting small mushrooms she called 'Beast's Bane', which let out a scent that disgusted carnivores, around the forest's edge. Even still, they preferred to do this during the day, just in case.

As they stepped into the clearing, they couldn't help but glance and blush at each other. Macintosh couldn't stop thinking about how cute Dash looked. Dash kept on marveling at how handsome Mac was. And in a moment... both would be wondering how they ended up with somepony so unbelievably hot!

They sat together in the middle of the clearing, at first, just resting in each others embrace. Then, Dash leaned in for a kiss, Macintosh meeting her halfway. What started as a simple kiss soon escalated. They started running their hooves through the others mane. They kissed with more passion and intensity, exploring their lover's mouth with their tongues. Their bodies began to rub together. Dash's wings shot upright as Big Mac's hoof brushed against her rear. And 'little Big Macintosh' got excited by Rainbow's moans and grinding hips.

Rainbow broke the kiss to push Big Mac onto his back, as usual. She loved bouncing herself on that hard cock of his, and knew he loved it too.

So... you can imagine her surprise when her coltfriend hesitantly asked her, "Actually Rainbow... do ya'll mind if we try somethin'... different?"

Rainbow just sort of stared at him for a brief moment before responding with a confused, "What do you mean? I... I mean I know what you mean, I guess, but... um... what do you... have in mind?" She was holding back. She had wanted to start complaining, thinking that what he meant was that she wasn't doing a good job at what she did to him. But no, she would wait, see what he had to say. He deserved that, not a reminder of her short temper.

"Well... I... I was kinda hopin' that... maybe... we could try... anal..."

"What was that? Speak up a bit this time."

"I wanted to try... anal..."

"I swear, Mac, sometimes you're as bad as Fluttershy. Spit it out already!"

"I want to try anal!" he finally exclaimed, immediately blushing at his outburst.

Rainbow just stared at him. A deep blush took her face. Her eye twitched a bit.

"You... want to do... anal? With me?"

"Ee-eeyup," Mac nervously confirmed.

"You mean you want me to let you take your cock... and shove it up my ass?"

"Er... eeyup."

"..."

"Now, Rainbow, Ah ju-"

"No. Just... just no!"

Rainbow Dash pulled away from him with a suddenly indignant look on her face.

"But Dashie, Ah-"

"NO! You bucking know how I feel about that shit! It's degrading and I will NOT do it." With that, she turned and crossed her fore limbs, suddenly not in the mood for Big Macintosh's cock. "Why the hell would you even think about that? Why the hell would you think I would be okay with that!?"

Mac just sat quietly for a moment, his expression full of hurt and sadness. Then, with a low sigh, he mumbled, just loud enough for Rainbow Dash to hear. "Ah just wanted to be in charge for once... Ah just... every time we do this, ya'll're on top, ya'll're buckin' me. Ah'd be fine if it'd be equal, but it's always all 'bout ya'll. Ah... Ah just wanted to feel like a stallion instead of... instead of your livin' dildo..."

Rainbow turned to look at him, mouth dropped, eyes staring wide. I... I had no idea... I didn't know he felt like that... Mac... Oh, Mac! Tears almost started welling up in her eyes, but she forced them back down.

Then she noticed Big Macintosh getting up to leave. "H-Hey now! There's no need to go! We- we can still-"

"Nope."

"Oh, c'mon Mac! You can't just... please, give me another chance, I'll make it-"

"Nope."

"Okay enough with the interruptions and one-word answers, please I didn't mean to-"

"Ya'll've had your say. So... good day, Rainbow Dash."

"But-"

"Ah said, good day!"

And with that... the red, heart-broken stallion was gone, leaving behind one lonely blue pegasus mare.
What have I done?

Later that evening...

"I... I just can't believe... I can't believe I did that to him! I... I just feel like such a jerk! Do you know what I'm saying?" Rainbow Dash sat in her cloud home, confiding to the only living being that she felt could give the understanding and wisdom she needed right now.

Tank stared up at her and blinked slowly.

"I know, I'm sorry, it's just... well, he's a great guy, and I really like him. Heck... I... I think I might even love him. But... anal?"

Tank gurgled a little.

"Yeah, you have a point... if I really love him, I've gotta learn to compromise."

Tank grinned at her.

"I mean, it is my own fault in the first place... maybe I did get a little carried away with the whole 'dominance' thing..."

Tank's head bobbed a bit.

"You know what? You're right! I'm gonna go right now and make it up to him! Even..." she let slip a small, nervous gulp, "Even if that means letting him... butt fuck me..."

Tank blinked again.

"Thanks Tank!" Rainbow said as she pulled her beloved pet tortoise close for a hug. "Knew you wouldn't let me down bud!"

And before Tank could even do something for her to interpret as "Good luck!", she was off for Sweet Apple Acres.

Big Macintosh slumped into his room, ready to hit the hay. It had been a long and disappointing day, and he was ready for it to be over with. He felt a little bad about how he'd treated Rainbow earlier, but... Celestia damn it, would it kill that mare to think of how he felt even a little?

He sighed, knowing there was nothing to do about it. Dash had made her feelings very clear to him. Right now, he felt that it would be best for them to spend a little less time with each other, until they could both cool down a little...

He turned out his light, climbed into bed wearily, and had just closed his eyes... when there came a tapping at his window.

He sat there and pretended to be asleep... he really wasn't in the mood for this right now... but whoever it was kept on tapping, louder each time. Finally, he got up and fixed whoever was outside a harsh glare.

And his expression softened the moment he saw the look on Rainbow Dash's face. It was... regretful, sad, apologetic... it was hard to exactly pin down what it was about that face, but he just knew that whatever it was, it was important and couldn't wait.

And so, trying his best to keep his composure (part of him was still mad... and another part was panicking, wondering what was wrong...), he got out of bed and opened the window for Dash. "What're ya'll doin' here Dash?"

Rainbow winced a little when he didn't use his pet name for her... she kinds thought it was cute... but she quietly entered the room. "I... I wanted to apologize. About earlier."

Mac raised an eyebrow. "Ah'm listenin'."

Rainbow took a deep breath, then began. "Big Mac... I... I'm sorry about everything. About... me... I never realized how much that sort of thing meant to you. I... I was just being selfish is all. I l-.... I luh-... I love you, okay? And the way I've been treating hasn't shown it! So please, let me make it up to you."

Big Mac just stood and stared, almost unable to believe what he'd just heard. Rainbow Dash? Admitting she was wrong? Admitting that she loved him!? Mac fought the urge to smile at this... he wasn't quite ready to forgive her yet.
"So, what did ya'll have in mind. Fer makin' it up t'me an' all that."

Rainbow looked him in the eye, put on a serious expression, and stated very plainly, "You. Me. Glade. Now. Buttsex. That sum it up?"

By the time the two reached their private little glade, Luna's moon had risen enough to shine its light down upon them, illuminating the small forest clearing. It was a beautiful sight... but it wasn't what they came for.

"Are ya'll sure?"

"Dude, really? YOU'RE the one who wanted this so badly, and now that I'm for it you have second thoughts? I'm sure, now let's do it!"

"Okay... so uh..."

"... You have no idea what you're doing, do you?"

"Well uh... Ah guess... we need t'get my rod... wet... so uh..."

"Okay, Mac, you are REALLY cute when you're like this, but please... ugh... we need to lube up your cock, so I'm going to have to give you a blow-job and get it nice and wet. Alright?"

Before he could respond, she had him on his back, and was licking up and down the length of his stiff stallion-hood. He let out a grunt as she quickly began mouthing the flared head, quickly moving down to suck him off. Damn! She's either really excited... or she really wants to get this over with... bettin' on the second one...

Still, though, the rapid pumping was turning him on... she was being quite rough about it, and was being sure to lick all over him as she took his dick in her mouth. Soon his cock was at full length, hard as can be, and wet all over from the pegasus' sudden rapid blow-job. Satisfied with her work, she stopped sucking and turned, lifting her flank in the air and giving it a little shake.

"Well, c'mon big guy, show me what ya got!"

Hesitating only a moment at her apparent eagerness, Mac soon obliged, raising up behind her and quickly attempting to force his massive, saliva-coated equine cock into her tight, virgin anus. Rainbow let out a gasp of pain and pleasure as she felt her ass being penetrated. It hurt, it felt foreign and wrong...

And she loved it!

Big Macintosh stopped, concerned, and began to retreat, fearing he'd hurt her, that this was a bad idea.

"What... the hell do... you think... you're doing? Get that amazing dick of yours back in there!"

"But Dashie Ah don't-"

"Oh no you don't! You wanted to be the dominant one, now finish what you bucking started! Fuck my brains out, make me yours! I want it! I want your big, hard cock all the way up my butt! Now!"

Surprised at her outburst and afraid of what would happen if he refused, he quickly began thrusting his hips, forcing himself deeper into her with each shove. Her screams of ecstasy proved to him that he was on the right course, so he doubled his efforts, going harder and harder with each passing minute.

Words could not describe how they both felt. For Big Macintosh, it was a long time fantasy come true. He was on top for once, making his mare cry out in a state of lust as he pleasured her. For Rainbow, it was something she'd never thought of... being knocked down a peg, being disgraced and defiled by somepony she loved... and that made it all the more hot for her!

Oh Celestia, he's tearing me apart! Fuck... yes!!!

Oh Luna damn it, she's tight! Listen to her moan and scream... Fuck, I think I'm gettin' close!

"Rainbow, Ah'm-"

"I-I know... I am too! I want it! Don't you dare pull out until I'm done!!"

Grunting in understanding, he kept pumping himself on her, just listening her moan and scream like a little slut. Honestly, he didn't really want her like this... but he had to admit there was something primal... instinctual... that made this alright with him. He wanted her, he wanted her to be his, he wanted to make sure she knew that she was his!

Rainbow panted as she felt her pussy tightening up and moisten, and she let out an almost deranged cry of "MAC!!!" as she felt herself cumming, letting loose a spray of sweet sex juices onto the grass. "P-pull out... f-finish it... I want to be your bitch! Cum on me, cover me in it all! Pull out now, or I will never forgive you!!"

Mac didn't need to be told twice. He immediately forced his way out of her, and let loose the massive load he'd been trying to hold in, shouting out his lover's name as he did so. His thick, white semen burst out, coating her in its hot, sticky embrace. She had cum in her wings, cum in her hair, and while he was still going she flipped over to give him a few shots at her flushed, horny face. Her tongue lolled out and she let a moan as she felt herself let loose more mare-cum. It was just... so... HOT!

They both flopped down on the sex-juice soaked grass, panting and wet with sweat, semen, and mare-honey. After a moment, they turned to face each other, staring into each others eyes, and in that moment they both knew that they had something wonderful, something worth making sacrifices for, something worth fighting for. They shared a smile, then kissed under the soft light of the midnight moon.

Things were good... And as they broke their kiss, there was only one thing said... by both of them, at the same time.

"Ready for Round Two?"

Author's Note

Okay, well this was interesting to write. I honestly feel I could have done better, but after looking it over can't see exactly what should be changed. Maybe it's just that I have little experience with buttsex... ah well.
So this story was requested by Jake the Army Guy.
Thanks so much for reading, and I'll see about getting some more stuff for you ASAP!