Author's Note
If you're here just for disposal, you can skip to that part by searching for "***". Likewise, if you're not fond of disposal, that pagebreak can be your signal to skip the rest of the story.
Hope you like the fic. 
The Winner And The Loser
Battles
“You know,” Rainbow Dash said, struggling against the ropes that bound her arms to her side. “This is all a bit unnecessary.”
“Sorry Rainbow,” Applejack said, unable to keep the edge of anticipation out of her voice. “Gotta make sure you don't try and break free. A bet's a bet, as you're so often fond of tellin' me."
"Yeah, yeah," Rainbow grumbled, struggling against the ropes again. Her wrists twisted and turned, sliding past each other in her vain efforts to unentangle herself.
“Never underestimate an Apple’s ability to down cider,” Applejack chuckled, patting her belly, which was distended to the point of making her appear as if she were a good six months pregnant. “‘specially their own. Honestly, what were you thinkin’?”
Rainbow scowled. “I didn’t think it was possible for a single pony to drink an entire keg in one setting without throwing up, let alone five! I thought it was a sure win! Besides, I figured you were joking about the whole…” she looked down at her legs, which were also trussed up. “‘Eating me’ bit.”
“‘faid not,” Applejack said with a wide smirk. “And woah nelly, am Ah gonna enjoy this! Ah ain’t had the opportunity to gobble a pony in ages!” Applejack sauntered over to her tied up friend, leaning on her shoulders. “Shame it had to be you though, Rainbow.”
“Whatever,” Dash grumbled. “Just get it over with.”
“If’n’yall say so,” Applejack said, her gut wobbling as she stretched her arms out behind her and pushed her chest up, ample bosoms heaving. “Don’t worry about all the cider, Ah still got room enough in there for you.”
“Oh, awesome,” Dash said sarcastically, a sour expression befouling her face.
Applejack sighed. “Dash, if you can’t be a good sport about this—“
“I’m going to get eaten in a few moments,” Dash said, turning her head to give Applejack an unamused stare. “By my best friend. I deserve to be a bad sport.”
Applejack shrugged. “Fair ‘nuff. Alright! You ready for this?”
“No,” Dash said flatly. Applejack ignored her.
“Alrighty then! Let’s get to work!” Rainbow Dash yelped as Applejack grabbed her around the waist. With phenomenal strength, Applejack hoisted Rainbow Dash into the air, and opened her mouth. Dash made the mistake of looking down as Applejack continued to lift her up, and let loose a strangled yelp. The view would have been, for any casual onlooker, bizarre; but to Rainbow, as much as she was loath to admit it, it was terrifying. The wide, teeth lined hole that was going to be devouring her stretched wide, Applejack’s long, saliva coated tongue twitching and flicking in the middle of it.
Her hooves slid into Applejack’s mouth, no problem. Rainbow squirmed a bit, cringing at the odd feeling of the warm, wet walls grasping at her. She felt AJ’s tongue snake around her hooves, dancing about her frog on her left hoof for a moment, eliciting a tiny giggle from Dash, and a jerk of her leg.
“Hey!” she gasped, momentarily forgetting her situation as she smiled widely. When she sunk about three inches downward, however, she stopped. Her hooves had made their way to the back of Applejack’s mouth, and she knew that any second, they’d be in her throat.
Dash didn’t even have time to scream; once her hooves slipped into Applejack's throat, her entire body soon followed. It was a most peculiar sensation—it was like sliding down a soft, living waterslide that was attempting to squeeze her from all direction. Dash looked down over her chest, seeing Applejack’s throat bulge obscenely as she traveled down it.
"Woah," Rainbow said, her eyes wide. The whole situation was so surreal that the pegasus could do nothing but be in awe for a few moments, until Applejack’s throat started to yank on her again. It was at that point that she realized just how far the situation had progressed, helped along by the fact that her hooves and lower legs were now inside Applejack’s stomach.
Applejack moaned softly, one of her hands reaching up to her breasts, which were held in a tight tank top. As she continued to gulp her friend down, she groped and massaged her breast, her grunts and groans no longer just from the effort of swallowing. Rainbow Dash felt heat flush her cheeks as Applejack exuded these lewd sounds.
“Come on, AJ, don't make this so weird,” Rainbow Dash muttered, before realizing that the situation she was in was so utterly weird that the added sexual tinge hardly made it any more bizarre. Sighing, she was content to going slack and letting Applejack’s gullet do the work until her breasts slipped down into her throat.
“Ah!” Rainbow squealed, the sudden pressure on her modest, yet sensitive breasts sending spikes of sensation through her body. If she had to pin it down, it wasn't exactly arousal—but it was something very close. Her stomach twisted and turned in knots as she realized her head was the only thing still outside of Applejack’s mouth. Her mind was racing at a thousand miles per hour—this would be her last chance to speak, to say anything heroic or resembling last words. She inhaled deeply, trying to clear her mind of all the rampart emotions in an effort to convey a final meaningful message.
“Fuck."
With that, Applejack gave a final, momentous glck!, and Rainbow's head slide into her throat. A moment later, the entire body of the pegasus was curled up inside Applejack's stomach. This would have given her the appearance of looking incredibly pregnant were it not for the fact that her belly bulge was lumpy and uneven, complete with a faint outline of Dash's face as it was pressed against her stomach lining.
Applejack’s face crumpled for a brief moment, and she let out a loud, satisfied brp! “Ah! That was one spicy pony!” she exclaimed, rubbing and patting her belly. Rainbow let out a small, muffled grunt, and Applejack groaned as she shifted in her stomach.
“You know, you were the first pegasus Ah ever ate,” Applejack told her bulging belly, which was beginning to shift more rapidly now. “Ah have to wonder if you were that spicy just ‘cus of your connection to rainbows and all that, or if all you featherbrains taste like this.”
Rainbow was now thrashing and kicking to the best of her ability inside Applejack's stomach, still bound by the farm pony's superior rope work. A few muffled screams and curses vibrated outward, but Applejack's stomach gave a might groan at the same time, drowning out any chance of understanding them.
“Ah’d better get to work,” Applejack said, rubbing her belly as Rainbow's thrashing slowly but surely became less frequent. “Gotta work off a bit of this, you know? Can’t be lettin’ myself go…”
Applejack sauntered off towards her orchards, large, Rainbow filled belly swinging from side to side as she did so.
***
A few hours later…
Applejack removed her stetson, wiping down her brow of sweat as she leaned against the apple tree she had just finished harvesting. Her belly was significantly smaller now—indeed, it merely looked as though she had a sizable potbelly. With a satisfied grunt, Applejack leaned against the tree, her rump pointing outwards as her stomach gave a low rumble.
“Guess you're ready to come out, huh, Rainbow?” Applejack said, smirking. She dropped her daisy dukes, exposing her bare ass to the orchard. Reaching back with her left arm, her hard groped her sizable asscheek (which had only become more sizable with the integration of Rainbow Dash into her body), and spread it. A long, sharp frrrrrrppt escaped her ass, and Applejack sighed softly in releif. “Ah’ll take that as a ‘yes’, sugar cube!”
Applejack bent down into a squatting position, grunting as she settled into the most comfortable stance she could manage. A few more weak, almost silent farts escaped her as a little bit of pressure was put onto her stomach, and as her stance opened up her lower digestive tract. With a low growl, Applejack closed her eyes and squeezed with all her might.
The shit was so large that she could feel it inside her, and she knew that despite her best efforts, it had not budged. The rope of fecal matter that had once been her best friend remained stubbornly in place.
“Ah, c'mon, Rainbow," Applejack said with a grunt as she attempted to push her bowel movement out once more. “Ah know you're the stubborn type, but they’re so need to be such a sore loser!” She screwed up her face, and with all her might, attempted to push the shit out once more.
As if it had listened to her pep talk, the massive log slowly but surely began to move. Applejack grit her teeth, eyes rolling back slightly as her gut rumbled, moaned, and groaned in its efforts to move the digested Rainbow Dash. With a resounding, almost sickening squelch, Applejack’s anus opened, and the hardened tip of the log breached outward into the fresh air.
Now that it had penetrated to the outside, there was no stopping the shit. Applejack gave a little gasp of surprise as she felt the emptying sensation in her bowel overtake her with execrated speeds. This is not, however, to say that the shit occurred quickly. No, while Applejack managed to excrete it from her at a quickened pace, the shit itself was so long and twisting that the act of expelling it from her took well over a minute. It slithered from her like a soft, rank snake, curling up and pushing its way through the grass as more and more of it was forced from Applejack’s ass. This action was accompanied by small sounds of pfft and [ifrrpt, little bits of gas escaping from her with any chance they got.
After a minute had gone and passed, and her shit coil seemed nowhere near stopping, Applejack cast a glance backwards. Whistling in admiration, she gave her potbelly a hearty pat, grinning. “Damn, Rainbow! Ah didn’t think you had it in yah, but this is one of the best shits I've ever taken!”
It was quite impressive; it now reached over five feet in length, sprinkled with bits of rainbow mane, blue fur, and every now and then, a rib or two. The rope that Applejack had tied Rainbow up with was also present, apparently unaffected by any of the digestive juices that it had been subjected to. It wove in and out of the shit, barely breaking the surface in some places, while it was much more pronounced in others. It seemed almost as if the shit had coalesced around the rope, owing its shape to the flaxen tool.
Applejack gave a final nggh, and the end of the shit slipped cleanly from her ass. She straightened up, patted her belly, and tipped her stetson at the coil of crap before sauntering off deeper into the grove.