Horse Riding

The huge, tall, and imposing mare known as Twilight Sparkle stood before you with her back facing you, and what back she had. This gave you a perfect view of her massive, fat rump pressed against you. A dark shadow loomed over you from its great mass. You were not afraid in the least, despite the substantial size difference between you and her. Your back was pushed against a hard, wooden wall from behind you. You knew Twilight was a gentle mare, there was no need to be afraid. Her bubbly rump seemed like a bloated beachball. Under normal circumstances, she should be able to crush you with the heavy weight of her body pushed against you. Clearly, there was some magic protecting you from her tremendous weight from breaking your body.

Your big horsey love with packing heavy loads back there. Any BBW human woman back home on Earth could not match the sheer weight and heavy thickness of Twilight’s gargantuan rump. What’s more, her crotch-tits seemed to have gotten substantially larger during her growth spurt. Each one of her tits between her back hind legs was about the size of a watermelon at the very least. Twilight now had the best of both worlds, a massive ass along with huge tits combined, and you could look at the two of them at the same time from standing behind her.

Your head rested upon her right buttcheek, it sank deeply into the plush softness of her fat, bubbly rear. You lovingly kissed and licked her plump cheek, causing the mare before you to sigh, moan, and make a series of horsey sounds in pure bliss.

In addition, you used both of your hands to massage the warm softness of her rear. Your hand sank deeply into the thick, squishy softness of her bountiful flesh from her backside. The sheer thickness of her cheeks meant you were not able to fully wrap your hands around it. Your hands barely reached her cutie marks on either side of her expansive cheeks.

Your huge cock stood to attention within the wide canyon gap between her buttcheeks. They felt marvelous for your massive cock to be hotdogged between her heavy, warm softness. Down below, upon your lower shaft, you could feel her marehood convulsing against your rod, soaking it with her creamy essence. The heavy cheeks of her ass lovingly squeezed your cock between their wonderful, pillowy softness.

Heaven, absolute heaven you were experiencing having such an amazing ass pressed against you. It felt warm and soft to the touch, your hands sinking deeply into her cheeks like memory foam. The softness of her velvety fur pressed against your bare skin only increased the feeling.

Experimentally you pulled your right hand back and watched the depression on her cheeks rapidly fade away and return into a perfectly smooth shape. You pressed your hand back down and watched in delight as it sank deeply into her squishy soft flesh.

You were overwhelmed by the sheer beauty of her massive ass. Tears began to fall down your cheeks, and they subsequently landed on her buttcheek. In response, Twilight’s cutie marks glowed with blinding light and her body began to inch upward into the air. At the same time, her buttcheeks began to inflate outward like a car’s emergency airbags, and push you even harder against the wall behind you. You uttered a muffled cry out in pure bliss into her bubbly cheek pressed against your face as you were getting even more fat horse ass in your face.

“Mmmmm! Yes! Worship my ass!” Twilight cried out at the feeling of her cheeks rapidly expanding across her library. She began to grind her ass against you, her little human lover, pressing her heavy, and growing weight against you. You hissed in pain from the weight of her heavy backside, but you were no worse for wear. It seemed there was protection magic in place that got stronger automatically. Her air ballooning buttcheeks pushed you against the wall behind you as they were hyperinflating. You uttered a muffled cry of pure bliss at the feel of her growing ass pushing against your body.

Her buttcheeks soon came pushing against nearby bookshelves from either side of her, threatening to knock them over. Each one of your tears falling upon her cheek caused Twilight to gain several inches in height.

Her bookshelves were soon knocked over by her rapidly expanding buttcheeks, sending books flying everywhere. The sight of seeing her books being in such a mess caused the huge mare to gasp in shock, which took her out of her sexual euphoria.

So, with a flash from her horn, she stopped her growth with a counterspell and reversed her growth. It seemed Twilight didn't want to grow any bigger and remain at her current size. This had the peculiar effect of her ass air ballooning outward for a few seconds before it subsequently shrank back down to normal size, before air ballooning outward again, and then shrinking back down again, and so on. Twilight was quite literally fighting against the growth you were giving her from your tears of joy.

You didn’t mind. She had more than enough thick ass already. No need for anymore. She was at the size you could fuck her properly without going overboard. You wiped away your tears, and thus Twilight’s growth came to a stop. “Twilight, can I ride on your back again?”

Without a word, the mare took a few steps forward, and leaned forward, arching her back and shoulders down to the floor. This however had the consequence of raising her massive ass even higher into the air from this new position. Your jaw dropped at its sheer beauty. She giggled happily as she looked back at you. She then unfolded her wings, and spread them out, this only made her even sexier.

You walked to the right side of the leaning mare. Without a word, you made to sit down upon her upper back and then leaned forward to begin kissing her neck and mane. This earned you some heated moans from the large equine, along with some happy whinnies and other horsey sounds.

The mare subsequently stood up onto her full, mighty height. “Anon, you want to go for a romantic walk with me while you sit on my back?” she asked, staring back at you with a look of hope in her eyes.

“I’d loved to, Twilight,” you said softly, while tenderly rubbing her neck and mane with your hand.

Twilight pursed her lips for a kiss, leaning her head towards your own. However, she could not reach you. The mare whimpered sadly, tears filling her eyes as she looked down at you with pleading puppy dog eyes, along with her ears drooping sadly. You felt butterflies flow through your stomach at the cute sight. For such a big horsey she was incredibly cute, not to mention very sexy.

You soon answered her plea, and climbed up further up her neck, and reached upward to kiss her. The mare sighed happily and closed her eyes upon the feel of your human lips against her own. As for you, her warm and soft equine lips felt slightly fuzzy against your own. The two of you uttered muffled moans of pure bliss as you lovingly kissed one another. The romantic walk she planned to take you on can happen later.

You reached your right hand up and laid it upon her cheek. From there, you began to gently stroke her cheek up and down with your hand with loving tenderness. Twilight’s cheeks lit up with a blushing pink color from this affectionate gesture.

At some point, the mare uttered a muffled giggle, before she brought her large equine tongue into your mouth. She completely dominated your far smaller human tongue. Her long, thick tongue swirled wildly about in your mouth. You could only lick the underside of her thick wet muscle for the most part. Nonetheless, you were enjoying yourself having your mouth ravaged by the large mare.

You and Twilight shared a passionate kiss for quite some time. Before eventually the two of you pulled away, a bridge of your saliva connected your departing lips. The mare stared back down at you with warmth in her huge, purple eyes.

You could not help but reach your right hand up, and begin to gently scratch the back of her ear. At the same time you used your left hand to begin gently rubbing her mane with long tender strokes.

Twilight uttered a deep throaty moan in response to this. Forthwith, the mare began to gently lick your face with her long, thick equine tongue. You were undeterred and continued to give Twilight loving affection with your hands by petting her mane, and scratching her ear. Twilight moaned in bliss as you gave her tender love while she licked you.

Twilight walked backward to lean her massive ass against a wall for support. With herself safely secured, she reached her right hoof back between her hindquarters and subsequently began to feverishly masturbate. Wet, fleshy sloshing sounds could be heard as her hoof rubbed against her meaty pussy.

Twilight closed her eyes, and unleashed a loud horsey neigh. Her tongue came to loll lazily to the side due to her distracting sexual euphoria. You used this opportunity to begin lovingly licking her neck. You were now scratching her ear, petting her mane, and licking her neck at the same time. The mare you showered with affection cried out in pure ecstasy, her thick, and meaty hips came to slam repeatedly against the wall behind you. The shock waves from the impacts from her heavy rump hitting the wall behind her caused bookshelves to fall over. Dust and debris fell from the ceiling. In addition to that, this caused her cheeks to smack against one another with loud, meaty slapping sounds of flesh slapping against flesh.

The mare craned her neck back and uttered a loud whinny as a torrent of her marecum came blasting out of her marehood like that of a shotgun, spraying the wall behind her with thick globs of her creamy essence. Repeatedly orgasm after orgasm rocked her body from your loving affection. Some part of you wondered how this was scientifically possible for a magical pony to get off with ear scratches, pets, and licks.

But then you remembered the magical pony part, so the whole science thing is mostly moot here. Whatever the case may be, this was a magical experience for both you and her. Nothing could ruin this tender moment.

Suddenly, Pinkie Pie spontaneously appeared out of thin air in front of Twilight with a big smile on her face. Twilight yelped, and jumped several feet into the air, before soon dropping back down again. The heavy impact of her tremendous hooves hit the floor with a loud crash that left deep craters in it.

“Hey Pinkie,” you said, giving her a wave.

“Hi Anony!” she said, giving you a wave with her right hoof with five pink fingers on it. You closed your eyes and did a double-take. When you opened your eyes again, it appeared her hoof was back to normal with no fingers.

“How did you get in here?! I locked all the doors of the house, and----” Twilight stopped speaking when she realized how stupid her question was, since it was Pinkie Pie. “Never mind,” she grumbled angrily.

“Well silly, my Pinkie Sense kind of went off like a bomb when it detected you had become an alicorn. Naturally, I had to phase through the walls of your house to investigate.”

“How are you able to go through solid objects without---” Twilight cut herself off, realising she was asking another stupid question.

Twilight nearly jumped into the air again when she felt Pinkie Pie feeling up her left buttcheek. Pinkie pressed her hooves into the thick, bubbly softness of her luscious rear. Her hooves sank into the deep layers of squishy soft fat like that of memory foam. “Twilight, you got the biggest ass I have ever seen,” she giggled, giving her cutie mark upon her plump cheek a lick with her long, thick equine tongue. “Hehe, I think Princess Celestia is going to be jealous with this super dee duper rump you now have.”

Twilight blushed profusely. “Well, it and my body seem to actually get even bigger if Anon cries upon it. I can only assume it will expand even further if he cums inside me again. I had to cast counterspells to stop my growing body from destroying my library.”

Pinkie Pie gasped in shock. “Heresy! Why would you stop your big fat sexy booty from getting bigger?! Bigger is better after all.”

“Because I don't like the idea of having my ass avalanche across Equestria. Despite the fact, my body does not seem to hurt Anon, and I assume others even with increased weight. I like to keep my passionate relations with Anon private. I don't think I could even perceive his penis if I went full supernova in growth on top of him.”

“Awwww! You're no fun!" grumbled Pinkie Pie, crossing her hooves as she stared with narrowed, angry eyes at Twilight’s rump. “Ass! You could be much bigger and sexier! But Twilight is holding you back from your true potential! You could be an enormous bouncy castle of an ass for everypony to have fun on it as they bounce upon it!” she shouted.