Big things usually begin small.

....Yeah. That's...pretty much all there is to it.

Actually, that's being a bit more lazy than one would have thought. Alright. Perhaps more detail is in order.

Big things usually begin small. For example, a scapegoat could cause an entire war to start or a microorganism can evolve into a mighty titan. It's always a treat to figure out what will happen if one give enough faith to a really small thing. Potential is everywhere.

Sadly, this is one of those cases where something small should STAY small. For the curious tale about to unfold involves something malevolent. Something sinister. Something conniving. Something no bigger than a post-it stamp.

A seed. The smallest seed in the history of Equestria. Not a metaphorical seed. Just...a seed. It had been in the ground for some time. Nopony knew of its existence, much less who or what planted it. And whether it was better if ponies knew about it or not wasn't important.

Because it had sprouted into a...sprout. A small sprout only 4 raisins tall. Right in a cute little place called Sweet Apple Acres. Home of a fraction of the hard working Apple family. I'm sure you know them quite well, eh?

First of which was Applejack, the hardest worker next to her brother (we'll get to him in a moment). Despite her muscular physique, she still looked quite attractive with her golden hair, large bust, and cute freckles. The sweat covering her top also contributed to a few stallions and mares making eyes at her chest as they passed on by. Nevertheless, she focused on her work restoring the barn after a firework mishap.

Don't ask how that happened, but let's just say Ditzy Doo is a bit more careful where she flies now.

The next worker was Apple Bloom, the youngest of the family. She was a teenage mare with not quite as much strength as her sister, but just as much determination, if not more. While she did focus plenty of her attention onto getting her cutie mark (yes, those ass tattoos that were all the rage), she still provided a good amount of help at the barn. While her bust was bigger than most teenagers her age, she wasn't quite as supple as her sister (obviously). She made up for that with a pretty face and an adorable ribbon for her crimson hair.

Lastly, there was Big Macintosh, the eldest male on the barn. He was a mountain of a stallion, red hair adorning his muscular frame. He didn't seem the bragging type, due to his stoic expression and lumbering attitude, but it was hard to imagine he didn't noticed his toned abs and tendency to go around shirtless. He was the talk of the town, alright. Other than that, he was content to serve his beloved family.

Among this group were also another stallion. The stallion's name was Caramel, a pretty average stallion with a sweet disposition (no pun involving his name intended). He was currently helping Apple Bloom with planting the newest batch of Extra-Shell Apples. It was a new type of apple imported from one of their relatives. Said to be harder to chew, but much more worth it when you got into the center.

However, Caramel couldn't help but smile as he watched Big Mac plow the fields. He wasn't afraid to admit he liked stallions and, despite knowing full well Mac and Cheerilee had a thing going on, he wished for one day to have that stallion...well, let's let him take it from here.

'You keep on doing that, Mac'. Caramel thought wistfully. 'Maybe, just maybe, you and I could just...let it happen...have you inside me. I'll let you be on top of me. I'd really like to know how a strong stallion like you would taste...'

"Uh, Caramel? The job?" Apple Bloom broke him out of his thoughts.

"Ah, shucks! The job! The job. Got it!" And with that, he resumed working, his own cock throbbing in his pants from that last thought.

It was then that Mac noticed something was off. The fields even further behind the barn looked sickly and decrepit.

'Might as well.' He thought to himself as he put down his plow and walked over to the area. 'I'm sure nopony will mind me checkin' this things out. Hope it's curable.'

When he got there, the place looked blacker than anything he'd ever seen. Something was ruining the harvest and he'd be damned if he didn't know what it was.

Wiping some sweat off his forehead, he noticed one area that was rotten and cracked. A single small patch of land with a green sprout in its center. And that sprout had an apple attached to its top.

"Huh. Looks like you survived." Mac knelt down to pick the apple up. "Wonder if Twilight knows a thing or two about this. I ain't seen this before."

Suddenly, he felt a sharp pain in his loins. It felt like a dart had been shot at them. He winced and looked down at his crotch. There was a very small hole in his pants, but nothing noticeable from a distance. The sprout, however, was positioned to face them and that same-sized hole was at the top of the plant.

"Okay. What just-HNNNG!!!"

Mac was interrupted when he collapsed to the ground. He looked like he was going into a seizure. His arms flailed. His head moved back and forth. He struggled to speak, but his mouth would not open. That dart did something, apparently.

"NNNNG! GGGGHHNNG!" Big Mac continued to convulse and turn. His legs spread out on their own volition and his cock was now fully erected. For a stallion, his size was quite impressive. It's a wonder it didn't tear a bigger hole in the pants.

'What's happening?! I need some help! A doctor! Anything!' Big Mac thought as the twitching got worse. 'I need food! Wait, no! I meant help! Food! No! HELP!' It seemed as if his thoughts were becoming a bit less...independent.

10 seconds passed and now, his eyes were glowing green. His bloodstream was also looking a bit greenish. 'Guh! I don't feel good! My cock! I need...I need...ugh....uuuuughh....food...I need....I....food...need food...'

The convulsing had stopped. Big Mac's face looked awfully placid now. He reached a hand down to his crotch and stroked his erection. He moaned a bit, desiring whatever he needed now. He had been infected with a new desire. And he'd sooner die than let that desire pass.

With that, he made his way to the barn. When he got there, he turned to Caramel. He had just finished planting the seeds for the new batch of apples and Apple Bloom was nowhere in sight. Probably taking a break somewhere. Either way, whatever was controlling Big Mac thought this was an excellent opportunity.

"Caramel..." Big Mac said, devoid of emotion.

"Hmm? Yeah, Mac?" Caramel turned to him, blushing a bit. Big Mac wasn't an anti-social stallion, but whenever they talked, it was business or some other mundane thing. He hoped it would be a little more than that this time.

"Shed..." The red stallion pointed to a nearby shed. It was sizable, due to it being made to keep supplies.

"O...kay." Caramel didn't know where he was going with this, but he obeyed. Soon enough, they were in the shed. "So, why are we here?"

Big Mac said nothing. He just bit his lip as his cock grew a bit bigger and wider in his pants. Caramel watched with fascination.

"Whoa!" Caramel gasped as the cock tore through Mac's pants effortlessly. It looked as big as stallion and maybe a bit wider. "I didn't know you had access to magic! I didn't think that was pos-"

"Clothes...off..." Big Mac said.

Caramel was feeling mixed emotions right now, but most of them were joyous and excited. "I can't tell you how much I've been waiting for this...just you and me." He was now completely bare, his small ass as his cock rose to the air. "Treat me like you do your mares."

"Hands and...knees." Mac commanded. Caramel did as he was told before the muscular stallion's cock-tip pressed against his check.

"Time for a test taste." Caramel sighed before closing his eyes and licking the massive cock. He moaned as he licked all the pre-cum that was leaking out of it. It tasted exactly as he imagined it. Just like apples. The sweetest kind. He pressed his own face further into the cock, wishing to taste more.

Mac's face wasn't that of pleasure, though. He seemed to now be resisting what was controlling him, as if he knew something awful was going to happen. And awful, that event was.

The urethra suddenly expanded and engulfed Caramel's head. The stallion was so shocked that he tried to pull out, but the grip was too strong. The cock was literally sucking him in. The pre-cum was acting as a very efficient lubricant as the poor stallion was sucked in to his doom.

Kicking his hooves and pounding at the cock, Caramel did his best to escape. He tensed when Big Mac grabbed his flank and head to push him in further. He began to shout, but only muffled screams were heard. Nopony would come to help him.

Pre-cum leaked onto the floor as Caramel further slid in. The combined tightness of the cock's inside and the fact that Mac wouldn't stop stroking Caramel's flank and cock meant one thing. The poor stallion was going to get eaten, but at least he was able to let his orgasm loose. Jets of cum hit the floor like missiles as Caramel unleashed his load. The struggling ceased a bit, making it easier for him to slide into the cock.

At last, only his hooves and tail were sticking out. Caramel's panicked outline was filling the right scrotum of Big Mac now. Soon enough, he had been engulfed. He tossed and turned in the scrotum as Big Mac stood still like a statue.

Before Caramel could get anymore words out, the scrotum seemed to be filling up with a strange liquid. Whatever it was, it caused Caramel to let out one final moan before he was converted to cum. Mac, roboticly, stroked his cock.

He stroked until the building-up of an orgasm came. With that, he let loose all the cum that had been built up. The white and murky fluid hit the wall like a cannon, leaving a few cracks in the side of the shed. The only remains of Caramel that were left were his discarded clothes, his skull, and the cum that used to be his body/other bones.

Mac, deep inside, screamed at the sight. He had murdered his friend in the most unusual way. But the parasite that controlled his brain did not care. It had other plans.

The other two that lived on this farm would be next. Starting with the teenager.

Apple Bloom yawned as she walked to her room. She still wore her pajamas, despite her age being well past that. Something about them felt comfortable after all.

She swore she heard moaning when she passed her big sister's room, but she already knew why. She knew that that "alone time" with Rainbow Dash wasn't just catching up and gaming. She already had "the Talk" after all.

Nevertheless, she made her way to her room. However, Big Mac, his pants back on, entered the house.

"Oh. Hey, Mac. You mind telling me where Caramel went? I didn't expect him to head home so early." Apple Bloom asked. Her big brother just looked at her in a most odd way.

"Room..." Mac pointed to her room.

"Uh, yeah. I was gonna head there." Bloom said uneasily. Something about her brother felt decidedly off. "You wanna come in?"

"Yes. I'm quite hungry too." Big Mac replied.

"...Okay." Bloom shrugged as she headed to her room with Big Mac in tow. Shortly, they were there. It was small, but not too small for the twosome. "So...need to talk to me about somethin'? If this is about Featherweight, then...well, I can't help it. He's cute!"

"...Turn around." Big Mac ordered.

"Okay. You're acting like you stayed awake for a month and a half. You mind tellin' me what's-"

Before she could finish, the stallion grasped one arm around her mouth and used the other hand to rip her clothes right off. Her breasts jiggled as the clothes fell to the floor. Her eyes widened as she endured this strange new behavior from her brother.

Then again, the Apple family was no stranger to inbreeding. Applejack was caught thrice with Mac in compromising situations before. Was the same happening to her? Was she being claimed by him now?

'NO! Don't do this brother!' She screamed in her head as her nubile body kicked and flailed around. 'My first time should be with Featherweight! Go with Applejack! She-AH!'

The urethra mouth had now clamped its "jaws" around her ass. Her body froze as the warm cock was beginning to envelop her ass-first.

'This is so weird! SOOO WEIRD!' She thought as her body folded. Her legs and arms struggled in the air as she sunk into the cock. The pre-cum matted her hair as she sunk even deeper. Big Mac was pushing her in, still keeping his hand on her mouth.

'Let me go! I don't want to be eaten! I don't want this! BROTHER, HELP!' But he wouldn't listen. As the world grew dark around her, his hand released her mouth. She could only let out a peep before the light vanished.

She fell into the left scrotum this time. She still struggled, but something was different. Instead of the scrotum filling with cum, it seemed to be shrinking in size with her still in it. Her body melted to accommodate the shrinking living space.

"Big....brother...." She gurgled before she was converted into cum. Cum that was to be stored. He was saving this for a very specific purpose. One involving the bigger sister. His one true mate. The parasite fed off of various instances when his desire for his sister was too much to bear. Those times where he and Applejack just let it happen.

Speaking of which, in her room, Applejack heavily slept. She wore nothing but her top and an orange thong as she slept. She worked even harder than she ever thought possible. Sleep was one of the various rewards. And, even further than that...

"D...dashie...knock that off..." She whispered in her sleep as her fingers slid down her panties. She rubbed her pussy as thoughts of her getting pussy-grinded by Dash and kissed by Big Mac flooded her head. "Nah...love you Dashie...love you too...big brother..."

Big Mac entered her room, as if on cue. He looked at the beauty that was his sister. What remained of his mind screamed at him not to go through with this, but whatever controlled him...well, you get the idea.

Throwing off the covers, he tore off his sister's panties in a flash. Her tits exposed to the air, she stirred, but still slept. In fact, she seemed rather aroused by this development.

He grasped her legs and put them together. His urethra opened up and engulfed her hoofs. Slowly, he consumed her. When he got to her pussy, she whinnied slightly. Apparently, her fantasy was getting steamy, no thanks to him.

As she rubbed herself in pleasure, he continued to envelop her in his cock. He moaned slightly when her breasts were sucked in. So hard. He loved them so much. Just as much as he liked kissing her. So forbidden. So tantalizing. Speaking of which...

When her head was the only thing exposed to the outside world, he knelt down and inserted his tongue into her mouth. She returned the french kiss and let out a cute moan as their tongues slid across each-other. It all ended when the cock fully enveloped her.

Instead of going to the scrotum, though, she stayed in the cock. Mac moaned as his cock filled itself with what was once Apple Bloom. Cum leaked out of the urethra as it churned inside of the large penis. Applejack frame was a bit visible and she was still sleeping.

'Wha...what's happening...' She thought, still in the realm of sleep, as she was blended in the slurry of semen. 'It feels...creamy...smells funny...tastes...even funnier...Mac...is that you...your cum...it's your cum...I know that taste...don't stop...it feels...good...brother's cum...gosh darnit, it tastes...feels...is...so...ahhhh...uhhh...guh...nuh! Guh...uh...ahhhhhnnn....'

SPLOOSH!

With that, Applejack was ejaculated out of the cock. She was intact...in a way. Her entire body was covered in layer upon layer of cum. Even her eyes were milky white. She stood up, cum leaking down every orifice in her body. She gazed mindlessly at her brother. Her brain had been broken down by that aphrodisiac cum. She was permanently covered in the stuff and it's possible that her insides were now nothing but cum. She was solid, but she was just...cum.

Her brother leaned in, eyeing what he did to his sister with curiosity. She began to speak.

"Must have brother's cum...need brother's cum...love brother's cum...would do anything for brother's cum...cum...cu...cuuuum...ahhhh..." She grasped her breasts, sloshing them about as she drawled on about the substance she was now dependent on. Her tongue stuck out, cum bubbling in her mouth and leaking onto the bed.

Despite the horror that had transpired that day, Big Mac couldn't help it. She needed him and he would bring her all the cum in the world just to keep her happy.

"Will cum...for you..." Mac whispered said as the two sibling kissed.

A dark voice rang throughout the farm, laughing a fit. "AT LAST! My return is nigh! I just can't wait to see this town pay for everything it did to me!"

The sky took on a sinister hue as the voice laughed again. "Next stop...the Griffin Kingdom!" With that, the sprout went back underground.

Unbeknownst to him, a massive comet was hurtling towards the Equestrian landscape. It glowed red and blue as it neared its own destination.

The land of the Dragons.

TO BE CONTINUED...

Author's Notes:

That got fucked up really fast, but trust me. Things get even weirder.

Stay tuned!