"Um, Big Mac? There's one more present you didn't find on the farm. Here, I'll show you where it is".

Big Macintosh looked at the grey maned Pie sister, who was very pointedly maintaining fixed eye contact with the floor, and clutching her thick coat seemingly for dear life. Still, there was a resolve in Marble's voice that told Mac that she wouldn't take no for an answer.

"Eeyup." he got up, grabbing his own coat.

Marble and Mac trudged in silence to the Pie families mines, Marble staring very pointedly ahead and never looking back to see Big Macintosh. Her first words since leaving the house only came at the mouth of the cave.

"Its-um, its warm inside, so you can take off your jacket." She managed to squeak out. "The rocks all give off a natural warmth".

"Eeyup." Mac did as she suggested, leaving his heavy coat near the entrance. Marble, though, kept hers on.

Mac looked at her inquisitively. She blushed deep red. "Eeep. I-I'm still cold in here." She set off down one of the shafts without another word.

Big Macintosh shrugged his powerful shoulders. After dealing with her sister for years, Mac didn't find it cause for concern if Marble was a bit weird.

As they trudged deeper and deeper into the mine, Marble suddenly stopped. Big Macintosh collided with her, and she audibly squeaked with surprise. She was trembling, but steadied herself. Without turning, she began to speak, her voice wavering.

"Umm, Mac, these last few days with you have been really....nice."

"I remember all the stories my sister had told me about her life in Ponyville, all the adventures she's had, and all the people she's met, but I always loved hearing stories about this stallion she knew, who worked on a farm. H-he always sounded so gentle, but so strong, and so, so...um, nice."

"And then I saw how..nice he looked, and I knew I had to give him a special gift." Mac could hear the sound of Marble unfastening her coat.

"I wanted to give you a special present for being so… nice."

Mac was suddenly aware that his mouth felt drier than he'd ever remembered it feeling before in his life. Something like this couldn't just happen, not to someone like him. Somehow, he managed a single utterance of "Eeyup.”

"I want you to take me." The coat dropped from her shoulders - her bare shoulders, with nothing underneath. Her whole back was naked, save for some thin strips of thread bunched at the small of her back.

Not that this was all Mac could see. Even with her back to him, her breasts - her stupendous breasts - seemed to stick out a good half a foot to the side. They were bigger than any pair Mac had ever seen before - he was amazed how Marble had kept them concealed while he had been there.

She turned, slowly, revealing more of her luscious body. Her lithe, muscular thighs. Her long, shapely legs. All the while revealing more and more boob for Mac, all literally wrapped up with a bow for him.

She stood in front of him naked, save for a ribbon and bow. He'd found his last present.

"Do you want me?"

Mac couldn't speak, he could barely think. But he could hear - particularly the low, straining tearing sound coming from his groin. They looked down simultaneously, seeing as a colossal tent formed in Macs work pants, running far, far down his leg, reaching to below his mid calf. His normally loose pants were showing a prominent outline of a long, thick erection, but his member wouldn't stay hidden away for long - his pants tried heroically, but his cock tore through them like a tank through a tissue, Big Macintosh's boner snapping to attention.

Marble was now the one experiencing the driest sensation she'd ever felt in her mouth. She had never expected anything like this - were all stallions this big? How could it possibly fit inside her?

"I-I guess I'll take that as an 'Eeyup'"

Big Mac replied to her by simply giving her single nod.

“O-okay, then lay down right here,” she said as she pointed to a nearby rock.

Mac followed her finger to see a large boulder that was big enough for him to lay on. He got on top of it, no question asked. When Marble had said that these rocks gave off heat, she wasn't kidding, the moment Mac touched the stone it felt as though it been out in the sun for a good while.

Once he had gotten himself settled on the rock Marble stared at the monster cock that stood before her . While her heart was set on giving Mac’s his ‘gift’, she was also completely scared off of her wit. While her knowledge on sex wasn’t exactly limited, thanks to sisters, she honestly didn’t know how to go about pleasing such a behemoth. Should she just cut to the chase and just ride him like Pinkie say, or should she just take it easy and start with some foreplay like Maude said? All she knew was that she had to come decision soon.

“So what do you want me to do?”

Seeing her hesitation Mac knew that it would for the best for both of them if he started her off with something easy, and thankfully for him he saw two solution to that problem. Without so much as a second thought he pointed directly at her mighty mounds.

“Y-you want me to use breasts first?” She asked as she pressed them together.

“Eeyup,” he nodded.

“Okay whatever you like,” she slowly approached his massive rod. One of her hands was about to undo the ribbon, but Big Mac stopped her.

“Wait you want me to keep this on?”

“Eeyup.”

“Okay,” As her mounds were centimeters away from his shaft, she lifted them above the swollen head , and slipped it in between her cleavage. Marble stifled a moan as she felt the warmth from his dick slowly slide between her breasts, the colossal cock giving off his rapid heartbeat.

When Marble finally reached the base of Mac’s shaft she was struck with sheer awe with how much stuck out. It really didn't come as a surprise that even with her bulbous bust she wasn't able to engulf his monster of a cock, but she certainly didn't expect his flared head to at the same level as her eye.

“Alright here I go…” she said as placed her hands on both sides of her breasts. She began moving slowly, awkwardly at first, but she quickly got a rhythm going and stuck to it. “Like this Big Mac? Am I doing it right?”

“E-Eeyup,” he grunted as the pressure of her fat globes was incredible. Now Mac knew that Marble’s boobs would be soft to the touch, but sweet Celestia he didn't realize that they would be as soft as newly made pillows. Thanks to the ribbon, there was already a tight hold around his shaft so she could focus more on moving.

As Marble started to pick up the pace, she noticed a large glob of pre-cum formed at the tip of his cock. The scent from his manly seed alone was enough to make her already dampening pussy even more wet. She couldn’t resist staring at his drooling rod, the clear liquid begging for her to lap it up. No longer standing the temptation she opened as wide as she could and puts her mouth around his head, her body tingling at the sweet yet salty semen.

Big Mac's’ head went back as he felt Marble’s warm tongue slips in his urethra, licking and sucking up as much pre-cum as she could. While certainly unexpected Mac didn’t at all mind the mare’s embrace. Even if she was struggling to fit all of his head in, Mac was very impressed that he was able to keep her at good speed.

With both her mouth and tits hard at work it wasn’t long before Mac felt his balls churning, and he wasn't the only one who sensed his approaching climax.

“Big Mac? Are you ready to cum?”

“Eeyup!” Mac grunted as he clenched both his teeth and fists.

“Then do it! Let out all of your tasty cum!” she shouted as she placed the entirety of his head in her mouth.

With a mighty roar, Big Mac let his massive monster erupt like a red volcano, unleashing a massive torrent of cum. Marble’s cheeks easily expanded with his cum within seconds as she tried to take it all in, but couldn't handle it. She was forced to release Mac’s head as more of his cum gushed out. Marble tried to swallow as much as she could, but due to the sheer size of the load it proved to be too much for her.

After two seemingly endless minutes of cumming, Big Macs orgasim slowly subsided. Marble gulped down any and all cum left in her mouth, and looked over the aftermath. Not only was Marble’s face and breasts coated with his thick, virile seed, but parts of the rock they were on and the ground surrounding it was also covered in his white love batter. Not even Big Mac himself was spared from being hit as Marble saw trails amount of on his semen on his pecs and abs.

Marble hadn’t expected any less from the mighty red stallion, nor that his incredible cock would still be rock hard and ready to please. After licking her lips for cum, she softly moaned as she removed his erection from her cleavage.

“Big Mac, seeing how you’re still anxious for more would you like to…” she looked away from the stallion. “fuck me?”

Before Marble knew it she felt a strong yet gentle hand grab the of her head. When she looks up she sees Mac giving her a warm pleasant smile.

“Eeyup.”

“Hey Applejack what are doing up so early? I know you wake up with the chickens, and being prepared and all, but we already got done packing for our trip back to Ponyville,” Pinkie said.

“Oh Hey Pinkie, Ah’m not trying to pack or anything Ah’m just looking for brother. Ah woke up to find him out of his bed, and Ah was hoping to found him. Y’all haven't seen mah brother have you?”

“Nope I haven't seen him anywhere. I’m actually here to found Marble.”

“Your sister gone too huh? Dang where could those two possibly gone off to?”

“Hmm… well I have noticed that both of their coats are missing from the rack.”

“Ah suppose that’s something. You have any idea where they could be?”

“Well my sister did always had a special place in the mines whenever she want to be alone. Maybe she took him there.”

“Then I guess we’re going there,” he said as he grabbed his coat. “Come on Pinkie y’all know the mines a lot better than I do.”

“Okie Dokie Lokie.”

“Yes! Oh sweet Celestia yes!” Marble screamed her little head off as she fiercely moved herself up and down along Mac’s mighty shaft. Her nails digged deep into Mac’s skin as she felt her womb stretching out to take in all of his meat. The ribbon she once wore laid in tatters as her massive mounds were free to bounce around each time their hips met.

The only thing that came out of Big Mac’s mouth were loud throatful grunts as the tightness of Marble’s cunt was just that overwhelming. He knew from start that the mare would be a tight fit, but he didn't think he would be resisting the urge to cum in the first few minutes.

As Marble continued riding on his enormous member, Big Mac can’t pry his eyes away from her perpetual bouncing boulders. The way they hypnotically moved before him drove him crazy. It was almost like they were begging for him to play with them. But being the polite stallion that he was he held back that urge as he knew it wouldn’t be right to just grab on to a mare’s chest, even if it was at the heat of the moment.

However unbeknownst to the stallion his watchful glare didn't go unnoticed. “B-big Mac hmmm… do you oooo… mind hold up my breasts? Ahhh… All this bouncing is starting to hurt,” she managed to get out through her moans.

Mac’s eyes widen right before a big grin showed up on his muzzle. “Eenope.” he said as his hands went straight for her tits, making the shy earth mare to grasp.

He absolutely wasted no time in groping and kneading her mounds. Marble screamed even louder as his fingers sank into her titflesh. She was completely enamored with how amazing Mac was with his hands. The stallion could have easily been rough with them, but instead he was firm yet gentle, hitting all her sweet spots.

Marble bite her bottom lip as his hands slowly reached for her plump harden nipples. And much like her breasts he was softly twisting and flicking them to make her get the best out of it. But all that milking came at a price. As her hips became wild and sporadic, Marble arcs her backs as let’s out one last wail of pleasure as her marehood clenches ups.

With its vice like grip squeezing the life out of his cock. Big Mac clutches her titantic tits as his cock detonates, sending knots after knots of thick hot cum in her insides. Marble grasp as she felt what seemed like gallons upon gallons of his virile seed filled her wombs. His load easily surpassed his last one as both of their juices flowed out from where they were joined, making a literal moat around the rock.

As both of their intense orgasim finally came to an end. Marble slowly fell forwards on top of Mac, where he welcomed her with open arms.The two look deeply into each other eyes while they softly panted. Completely out of nowhere Marble leans in and kisses the big lug on the lips.

While surprised at the mare’s sudden boldness, Mac simply ignores its and matches her daringness by slipping his tongues in her mouth. Marble’s eyes widen, but she quickly allowed him to continue, even sticking out her own tongues.

After a few minutes into their kiss. Marble breaks away from him. ”That was really great Big Mac. I take it you enjoyed your present?”

“Eeyup.”

“That’s good to hear,” she smiled as she started to nuzzled him. “I’m really going to miss you when you leave.”

“Eeyup,” he said, sounding a bit somber while running his fingers through her mane.

“Anyway we should probably get cleaned up and head back before everyone wake aaah!” She squealed as Mac’s strong hands grabs on to her hips, and lifts her off his rock hard cock, a good amount of cum come leaking out. After pulling her completely off of his cock, Big Mac turns her around and placed her cunt still oozing with his cum over his muzzle.

“Uh Big Mac what are you- Aaahhh!”she shrieked as she felt Big Mac’s tongue moving throughout her pussy, deeply exploring it to get lick up any and all bodily fluids. Just like with his kiss he once again proven that his cock wasn’t the only thing he was good at.

As she was being ate out, Marble see his monster of a cock hypnotically swaying back and forth before her. Being covered in a glossy coat of both of their juices it gave an enticing shiny to it, and since Big Mac was currently licking her clean it only seemed fair that she follow his example. Marble leans down forward and was once again at eye level with his massive member. And much like her eager stallion she wastes no time in stuffing her mouth full of his cock.

But as the two lovers were busy ‘cleaning’ each other. They were completely unaware that both of their siblings were in the distant watching in sheer shock. “Oh my Celestia.” Applejack said as he watched his big brother ate his friend’s sister like she was a freshly made apple pie.

“Well at least we found them.” Pinkie said as if nothing wrong.

While the two were both equally surprised at the sight before them. Applejack was more stunned for obvious reasons while Pinkie however was more surprised at how well her plan worked. The moment when Pinkie first laid eyes on the red stallion she knew that he would be the perfect stallion for her sister.

After all not only was he kind and gentle pony, but he was also the only who had the strong and the stamina to handle her sister. But since Marble was just as if not more bashful than Fluttershy she cleverly spoke highly of the stallion so she would gather the courage to talk to him. But she didn’t think she would be bold enough to bang Big mac on the same day she would meet him.

However while Marble’s actions were certainly unexpected it also completed phase one of her plan. She turns towards Applejack, who was clearly staring at Marble’s colossal chest, and spots a massive outline that matches the same size and girth of his brother running along his pants leg.

She licked her lips as she initiate phase two of her plan. “Say Applejack… if you think my sister is big than you’re really going to love your present.”

Author's Note

This is my Christmas present to you guys. And yes I know by the time you're reading this it'll be long past Christmas, but hey you know how Christmas is and I caught a bug while writing this. Also don't worry about the grammar errors I'll get fix later since this is a gift for you guys,