The Game of Estrus

Following the trail of destruction, Applejack charged furiously towards the source of the rapid thumping noise. She was pretty close now, the sound emanating from directly behind a small clump of trees.

Skidding around the corner, she came to a complete halt, and stood slack-jawed at the sight that greeted her.

In front of her was her elder brother, Big Macintosh. He had his forelegs wrapped around the trunk of a tree, and was stood on his hind legs, bucking his hips against the wood. Applejack could see that he had slid his stallionhood into a small hole in the trunk, and with each one of his thrusts, the tree leaned over slightly further, the dirt shifting as the roots were pulled from the ground.

"What in tarnation?!" she exclaimed.

Upon hearing his sister's cry, Big Mac's body went as stiff as a board, ceasing his thrusts. He turned his head slowly, his eyes wide with panic. "A- AJ..."

"Big Macintosh, what the hay's gotten into you?!" Applejack looked perplexed, as she strode slowly towards him.

Big Mac could hear her speaking, but all that he could focus on was how soft her lips looked when she spoke. How good it would feel to have them wrapped around his shaft, bobbing up and down, until-

He slammed his head into the tree, cringing at his own thoughts. "Stay away!" he yelled. "Ah ain't... Ah'm... there's something wrong with me!"

Realisation suddenly clicked in Applejack's mind. "Big Mac, were you at that there contest yesterday?"

"Y-yesterday?" Big Mac paused, and even his lustful thoughts were ignored for a moment, as he contemplated the question. "Ah don't... remember... anything about yesterday."

He turned to look at Applejack, immediately regretting doing so as his libido kicked back into gear. Her rear was emphasised so sexily by the denim shorts she was wearing. His mind was overcome with the urge to see them slide off her rump and slip down her legs, to see her smooth buttocks exposed for all to see. All this, even though he had seen her naked nearly every day before now.

He didn't understand. What had come over him? AJ had mentioned something about yesterday... yesterday... Every time he tried to think, he got distracted by his sister's beautiful eyes. How he wanted to see them looking up at him while he ploughed into her.

"Yah don't remember? Well shoot, that explains it! He musta done wiped yer memories, too." Applejack trotted over to her brother, and put a hoof on his shoulder. "Listen, Ah know what's wrong with yah."

That was enough to tip Big Macintosh over the edge. He had been able to control himself when he was just looking at her, but once he felt her touch, he simply had to have her. She said that she understood, right? Which meant that she knew he wanted to buck her brains out. Since she had come closer rather than backing away, that meant she wanted it too, right?

"Y'see-" Applejack started, but she was interrupted by Big Mac suddenly ramming his body into her, knocking her onto her back. His qualms now pushed aside, he gripped her shorts in his teeth and ripped them from her body, the fabric tearing down the side.

"Whoa Nelly!" Applejack tried to get back to her hooves, but Big Mac pounced on her and held her forehooves down. Before she could voice a complaint, he had leant down and placed his lips against hers.

Applejack was stunned still, her eyes wide with shock. She could hardly believe what was happening. She could feel his tongue pressing insistently against her lips, and it took all of her resistance to keep her mouth sealed shut.

Her first kiss shouldn't be like this. She'd never considered it too important to save things like that for "the right pony", since nopony was perfect after all. But it should at least be able to be something she could enjoy, which given the current circumstances, didn't seem likely.

Without releasing her, Big Mac positioned himself so as to align his stallionhood with her entrance. Applejack's worries were quickly replaced with much larger concerns, as the only thing protecting her now was the hope that Rarity's chastity belt would do its job. She struggled beneath him, but his body was too close for her to lift her hind legs, and her forelegs weren't strong enough to shift the weight Big Mac had on them.

With a single thrust, Big Mac's hips thrust downward, and the tip of his shaft slammed into the fabric covering her marehood. Applejack felt her lower lips spread apart, eliciting a gasp from her before she could stop it. Big Mac quickly took advantage of the opportunity, his tongue darting into her open mouth.

For a dreadful moment, Applejack had feared that Big Mac had torn straight through the belt. But his thrust had stopped short of getting even the entire tip inside, and as he bucked his hips up and down several more times, this was a result that didn't change.

She sighed in relief, which felt odd with a foreign tongue probing inside her mouth. Allowing herself to relax slightly, now that the prospect of bearing her brother's foal seemed to have been evaded, she noticed that the kiss didn't feel all that bad. She couldn't enjoy it, of course, not with the constant awareness of how wrong it was for a brother and sister to be doing this kind of thing together. But from a purely physical point of view, she realised that her brother wasn't all that bad of a kisser. Not that she had anything to compare it to, but if he was bad at it, then surely her tongue wouldn't be entwining itself with his without any conscious input from her, right?

It occurred to Applejack that, considering the fiasco Apple Bloom and her friends had caused last Hearts & Hooves Day, this was probably the second time that her brother had been hypnotised into kissing somepony.

She felt anger rise up from deep within herself. She would never forgive Discord for toying with her family's emotions like this, of that she was certain.

She felt the pressure suddenly lift from her lips, as Big Mac broke the kiss and stood up, his head turned to stare confusedly down at AJ's crotch. Clearly he had expected the fabric to give out by now.

Taking advantage of Big Mac's hesitation, Applejack quickly raised up her hind legs, and bucked him square in the chest. This staggered him a little, and he released her forelegs, allowing her to quickly roll over and get back to her hooves.

"Listen here, Big Mac! Yah gotta calm down, y'hear?!" Unperturbed, her brother slammed his forehooves into her back, making her cry out and forcing her to bend at the knees. Taking advantage of her bent posture and parted lips, he drove his shaft into her mouth, forcing the entire length inside in a single thrust.

Applejack gagged, and squirmed desperately under her brother's grip. His impact had knocked the wind out of her, and now his member lodged in her throat cut off any chance of her getting her breath back.

Fortunately, Big Mac pulled back before she could completely suffocate, slipping partially out of her mouth but leaving his tip resting on her tongue. She inhaled deeply, getting as much air into her lungs as she could before Big Mac slammed himself back inside, blocking off her airways once more.

This continued for several minutes, with Big Mac gradually picking up speed with his thrusts, giving Applejack less and less time to catch her breath in the process. Eventually, Big Mac started panting deeply, and changed his movements into quick jabbing thrusts, keeping himself inside her throat the whole time.

Applejack's body writhed, her legs frantically kicking the dirt, as her lungs burnt with a desperate need for air. Her eyes rolled back into her head as her vision started to blur. Just before she could pass out, however, she heard her brother let out a loud grunt, and her throat was filled with a hot fluid.

Big Mac pulled his stallionhood completely out of her mouth, and she gasped emphatically, the burning in her lungs finally being quenched. With her mind coming back from the verge of unconsciousness, she realised that she could no longer feel the pressure on her back that had been restraining her. Looking up, she saw her brother curled up into a ball, quietly sobbing and mumbling to himself.

"...monster. Ah'm ah monster..."

She stood up, and trotted over to him, her muscles aching with every movement. She put a hoof on his shoulder, and he looked up at her, tears streaking down his face.

"AJ... Ah'm so... s-so sorry... Ah didn't... Ah couldn't..."

Applejack shook her head. "It ain't your fault."

Big Mac stood up slowly, his legs shaking. He knew his sister was trying to comfort him, but right now he knew he didn't deserve it. "Yeah, it is... Ah'm ah... Ah ain't right. In the head." He averted his gaze from her. "Even now... Ah feel like Ah might do it again..."

Applejack's anger from earlier rose to the surface once more, burning more furiously than ever. It was bad enough that Discord would do this to innocent stallions like Big Mac, but to make them believe it was their own fault? She just couldn't let that go.

She knew there was some risk to what she was about to say, but she couldn't just leave her brother blaming himself like this. "Big Mac, listen... this problem you've got, it ain't you. Somepony made you like this. It's magic!"

Big Mac turned his head, slowly. His sobs had momentarily ceased, and he looked at her with a mixture of confusion, contemplation, and a glimmer of hope. "Magic?"

"That's right," Applejack continued. "Well, it wasn't somepony exactly. Listen, you remember that feller Discord, what made you believe you were a dog? Well, he's up to his old tricks, only this time he's doing awful things like this."

Big Mac sat on his haunches, looking deep in thought. Contrary to outward appearances, the plough-pony wasn't stupid. It would probably take him a while to mull something like this over, but Applejack was confident that, given enough time, this information would probably help him get a grip on his senses.

"Ah'll be heading back to the house now," she announced. She was aware that her presence probably made it more difficult for her brother to think straight. "Feel free to come back whenever you're ready to." She turned and walked away, looking back once she was out of the clearing. She could see Big Mac looking around solemnly at the destruction he had caused. Shaking her head sadly, she turned forward again, only to jump back in surprise, as she came nose-to-nose with a horrifying yellow-and-red-eyed visage.

"Oh come now, 'horrifying' is a little strong, don't you think? I personally think 'fearsome' suits me much better," Discord said with a chuckle. "Oh, hello Applejack, fancy meeting you here!"

"Discord!" Applejack snarled, stamping the ground with her hoof. "Fix what you did to mah brother right now!"

Discord shook his head, taking on an air of sympathy. "I'm so sorry, but I'm afraid I can't do that. If a judge doesn't treat his players equally, well, the whole contest would quite simply be a farce." He then turned to her, as if a thought had just struck him. "Oh yes, that reminds me. I'm going to have to punish you for your little rule-breaking just now."

"Rule-breaking? What rule-breaking?" Applejack knew what he was probably referring to, but she wasn't going to take anything he gave her without a fight. "If'n yah mean what Ah just told my brother, well, he's stuck in this here contest too, ain't he? Don't that makes it all right then?"

"Well, yes, that would be quite alright. But I'm afraid you just weren't quite careful enough." In a flash, Discord disappeared.

Applejack glanced quickly from side-to-side, until a rustling in the trees caught her attention. She looked up, and noticed a couple of branches were bobbing up-and-down of their own accord. They were quite oddly-shaped branches... they almost looked like ears.

Applejack went cross-eyed for a moment as her retinas defocused and refocused themselves. Blinking, she now stared back at the tree in question. The trunk had reformed itself into the shape of Discord's face, and was now quietly chuckling.

"The trees have ears, you see, dear Applejack." The tree then opened its mouth wide, revealing a cowering squirrel inside.

Applejack glared at the tree in irritation. Discord lack of straightforwardness was something that bugged her the most about him. "So what are you saying? That Ah broke your rule just 'cause some squirrel heard me talking?"

The tree lifted out of the ground and floated forwards, its texture rippling as it changed from bark to fur. It shrunk until it was back to his normal-sized head, his body slinking out of nowhere to reconnect itself.

Spitting the squirrel into his paw, he gave Applejack a sinister look. "Are you saying that this squirrel doesn't matter, because he isn't a pony? Well, in that case, I suppose you wouldn't really be bothered by anything I decided to do to him." His paw glowed, and the squirrel looked at her pleadingly, his eyes wide with fear.

"No!" Applejack yelled. Images filled her mind of the countless horrible fates that could await the innocent creature. She couldn't even picture how Fluttershy would react if she discovered that one of her best friends had let a woodland creature get hurt for their own sake. "Alright, alright. Yah got me, Ah broke your rule. So now what?"

The glow in his paw stopped, and the squirrel breathed a sigh of relief. "Now, it's time for your penalty game. Just give me a moment to set things up here." He snapped his talons, and the trees around them burst into life, leaves and apples blooming into maturity before their eyes.

"Hey!" Applejack stomped towards Discord, even more furious than before. "We do not use magic on our farm!"

"Well then, all the more incentive for you. If you succeed at this little game, I'll change all of the trees back to how they were; as fruitless as your purple unicorn friend's efforts to find a way out of this game."

"Now lookee here, Discord." Applejack pointed accusingly at him. "Twilight will find a way to beat you. Ah have faith in her. And so Ah ain't about to get taken out here." She narrowed her eyes, her determination radiating out of her. "Now, what do Ah gotta do?"

Discord brushed a tear from his eye. "Ohh, what a touching sentiment!" Dropping the façade, he cackled ominously. "Let's just see if you can live up to your enthusiasm."

Pulling out a scroll and some reading glasses from thin air, he balanced the glasses on his nose, and unrolled the parchment. "Ahem. Here are the rules. Rule number 1: I am going to turn this squirrel into an apple." This had only a moment to register in the squirrel's mind, before there was a flash, and in his place was an apple, sporting a bushy brown tail. "Rule number 2: I am going to hide this squirrel on one of the trees on your farm." With another flash, the apple was gone.

"Those ain't rules! They're just things you're doing!"

"Oh, really?" Discord mocked being taken aback. "How careless of me. Oh well. Rule number 3: To win the game, all you have to do is knock the squirrel out of its tree before the time is up. If you do that, both the squirrel and your farm will return to normal, and you will escape any further punishment."

"And if Ah fail?" Applejack asked warily.

"Well, obviously, you will be my slave for all eternity," Discord replied nonchalantly.

"W-what?!" Applejack stumbled backwards in shock.

"Oh, right, silly me!" Discord slapped his forehead with his paw. "I forgot rule number 4: I will be bucking you for the duration of the game. The time limit is until the point at which I decide to inseminate you." He smiled innocently at her. "Any questions?"

"Y-yah can't! Rarity made this here protection for us all!" Applejack turned to show him her chastity belt.

"Oh, that's so cute! You really think that's enough to protect you from me." He turned to face her directly, and Applejack's eyes widened at what swung around with him.

Now, Big Mac was a pretty large stallion, and so, assuming that ponies' bodies scaled up in equal measure, that meant that his stallionhood was pretty large, compared to the average pony. It had been large enough to cause Applejack some concern, at the very least.

Discord's phallus was similar in shape to Big Mac's, but it looked to be several inches longer and another inch or two wider. Applejack gulped.

Discord noticed her gaze, and chuckled. "You should feel lucky that this part of me is equine. If it were dragon, I couldn't guarantee that you'd survive."

Applejack was backing away nervously now, but she still clung to the one hope she had left. "I-it don't matter how big it is... if mah brother weren't strong enough to break mah belt, then Ah'm pretty sure you ain't either."

"I never said I needed to." He clicked his talons, and an orb of light appeared before him.

Applejack shivered. Why did she suddenly feel a chill?

Her question was soon answered, as Discord reached toward the ball of light with his paw, and stuck one of his toes inside. Applejack flinched, as she felt the walls of her marehood spread to accommodate an intruding object. "W-what in tarnation?!"

Discord chuckled, and wiggled his toe. Applejack shivered again as the object moved around inside her.

"Confused, Applejack?" Discord chuckled. He removed his toe, and the object inside Applejack disappeared. "Let me show you." The ball of light floated closer to Applejack, until it was right in front of her face. From this angle, she could see some colours mixed into the light; it was mostly orange, with a pink line running down the middle.

"It can't be!" Applejack gasped, and glanced round to her hind quarters. Sure enough, there was another light faintly emanating from beneath her chastity belt.

"Oh, but I'm afraid it can," Discord whispered in her ear. She flinched away, and saw that he now had the ball of light positioned against the tip of his member.

"N-no, wait..." Applejack trembled, as she realised what was to come. "Stop!"

"If I were you, Applejack..." Discord smiled, as the tip of his shaft entered the portal, and brushed against her lips. "I would hurry up and find that squirrel."

Gritting her teeth, Applejack turned and ran from the clearing. She could hear him laughing maniacally behind her, as his tip kept pressed against her nethers, not quite pushing hard enough to slip inside yet.

Once he was out of sight, she slowed to a walk, carefully inspecting each tree for signs of the squirrapple. Her whole body was shivering, and she kept telling herself that it was because of the draught that was blowing between her legs. She refused to acknowledge the small part of her brain that was telling her she was actually feeling aroused by all this.

The path she was walking sloped up into an incline. Reaching the crest, she looked out over the farm, and felt her heart sink at what she saw. It was no mere clump of trees Discord had brought to life; the entire farm was swathed in green for as far as she could see.

Suddenly, Discord stopped teasing his member against the outside of Applejack's entrance, and she felt his tip spread apart her pussy lips as he slowly entered her.

Her breath caught as her mind was overwhelmed by the sensation. With every inch he pushed into her, she could feel her walls spreading apart, stretching to accommodate his large girth. The small part of her brain that had been enjoying itself was now a rather large part, and though she hadn't forgotten the danger she was in, she was having trouble convincing her legs to move forward, rather than spreading themselves apart for him.

She gasped, as she felt his tip bump into something. Her cherry! Coming to her senses, she writhed her hips desperately, trying to dislodge him from inside her, but to no avail. Feeling him pull back slightly, she braced herself, as his cock slammed back inside, hard, tearing straight through her hymen.

"Gahhhh!" Applejack cried out, collapsing to her knees. The stinging pain was agonising, bringing tears to her eyes. She looked back, and saw blood trickling down her legs.

"Congratulations, dearest Applejack," Discord's voice emanated from nowhere in particular. "Today, you have become a mare."

"This is bad, this is bad!" Twilight was pacing back-and-forth frantically.

"Whadda we do, whadda we do?!" Rainbow asked, hopping from hoof-to-hoof urgently.

Film Reel slammed her hoof on the table. "Would you two calm down!? You still have time, y'know." She indicated the still-blank area on the chart, next to Applejack's name.

Twilight stopped pacing, and bit her lip in thought. "She's right. We might be able to save her if we can get to her in time." She looked to the other two. "I'll head down to the farm, but in case she isn't there, I'm going to need your help. Rainbow, you fly around Ponyville and see if you can spot anything suspicious. Film Reel, could I ask you to ask around town for any kind of indication to her whereabouts?"

Rainbow saluted, sticking her chest out. "On it!"

Film Reel nodded. "I'll see what I can do."

Twilight nodded to them. "Alright, then let's-" She was interrupted by a frantic knock on the door.

"Twilight!" That was Pinkie's voice! Twilight swung open the door, and the pink Earth pony leapt into the room.

"Twilight! Awful news!" Her whole body shuddered for a moment. "Something terrible is going to happen at the Apple farm! I think Applejack might be in danger!"

Of course, Pinkie's Pinkie Sense! "We know. Thank you, Pinkie, you've saved us a lot of time." She turned around to beckon the others. "Come on girls. We've got a friend to save!"