Being an interdimensional representative of the Crystal Empire in a world full of large, overcautious apes was already stressful enough for Shining Armor, but, of course, Cadance's overly sexual sense of humor had to kick in right before he stepped through the portal to this newfound "Earth". When he'd tried to "relieve" his stress in his hotel room in New York on the first night after they'd met with this "United Nations", he'd found himself completely unable to hoof himself off; his hooves simply couldn't find any friction.

The second night was even worse. He was used to Cadance getting him off multiple times a day, insatiable minx that she was, and now the humans were starting to seem attractive. One of the humans had been following him around. Given what he'd seen of humanity's culture, she seemed one of the better-developed individuals of the species, and his increasingly blue balls were quick to latch onto her image.

The third night was agony. Shining was trying to rub himself to completion on the blankets when a knock came at the door. He froze, looking down at the veritable puddle of pre that had collected on the comforter. "Uh… wh-who is it?" he called.

"Rachel."

He hadn't met anyone named Rachel in his meetings with Earth's own national representatives. Still, the voice sounded feminine, and be damned if he was going turn away someone who might help him relieve himself, far-fetched as the possibility may have actually been.

Hopping off the bed, he folded the comforter in half to hide his emissions. He was worried what the sight of his erection might provoke in the human, as they seemed quite shy of nudity, as well as the distinct musk that had built up in the room since his first night. Nevertheless, he opened the door with his magic to reveal the human who'd been following him around wearing, if his memory of human clothing terms served, high heels, a pencil skirt, tights and a turtleneck.

"Hi," she said, clearly on the verge of losing her nerve. "Um… do you mind if I come in?"

"Not at all!" Shining responded a little too loudly. "Uh, I mean… sure, if you'd like."

"Wow… is that some kind of perfume you ponies wear?" Clearly, Rachel had noticed the musk as she stepped inside and removed her jacket.

"Aheh, umm… s-sure," Shining Armor stammered out, hoping it hadn't put her off.

"Okay, let me get to the point," she said, whirling around to face him. "I grew up on a horse farm. We had stallions, and I always wanted to, y'know, explore with them a bit. But I couldn't work up the nerve to do it. I guess it was because they weren't sapient like you and me.

"But now, we have sapient horses—or ponies, I guess—on Earth, and what I wanted to ask was, uhh… would you mind letting me—"

"Explore?" Shining Armor interrupted, a grin on his face.

Rachel nodded slowly. "Yeah."

"Hooooly Celestia, you have no idea how backed up I'm feeling. My wife cast a spell on me that—"

"Your wife?"

Oops. Mistake. "L-look, it's not like she'd know. Besides, she's into me having sex with other mares! Or women, I guess. Especially if they're different species."

"Well… if it's okay with her…" There was still caution in her voice, but she seemed to be giving in more to her curiosity. "Seems like you were already trying to get yourself off before I got here," she said, pointing out his still-raging erection.

Shining looked under himself at his bobbing penis. "I guess, yeah."

"You want a hand with that?"

"Yes please!" Shining said and hopped up on the uncovered side of the bed with his thighs spread so his balls rested between them. Rachel's eyes went wide as her eyes fell upon the dark blue skin of his cock as it stuck out of his lap.

Humans were about twice as tall as ponies, but ponies seemed to have humans beat in the penis size department. Human males had a meager five inches on average to play with, where the average stallion sported a good 14 inches at full mast.

Shining was a special stallion, though, with 19 inches of length, and just over 3 inches wide. It seemed it didn't take much to impress a human woman, but seeing Rachel's reaction was enough to send another throb through his length.

"Wow…" she breathed. "It's the same shape as the horses here. Gotta be even longer, though and they definitely weren't blue," she said as she got down on her knees in front of him. "Right, well… what do you want me to do?"

Since Shining had arrived on Earth, he'd been fascinated by humans' hands. Sure, he had magic, but hands offered tactile manipulation he couldn't imagine achieving with his hooves. So, of course, here was only one thing he could imagine asking for. "C-could you put your hands on it?"

"Oo, I was hoping you'd say that." Rachel reached out and poked it with her index finger, making the cock before her bob back and forth.

"More," Shining gasped.

Rachel reached forward again and tried to wrap her hand around the base of his shaft, and failed miserably. A squirt of precum launched from the tip of Shining's cock and landed on the sleeve of her turtleneck. She brought the wet splotch of fabric to her nose and took a long sniff. "Mmm… that's amazing," she said, a smile appearing on her face.

"I'm g-glad you like it," Shining responded.

Rachel put her hand on his cock again and began moving it up his length. More pre burbled from his tip, running down the sides of his cock to stain her hand. Up and up she went, eventually raising herself off her heels to extend her reach, until she reached his flare and rubbed her thumb under his glans. "How do you even concentrate with this monster swinging around underneath you all the time?" she asked in wonder.

"N-no idea," Shining stammered, a shiver going up his spine from the sensation.

Now she brought her hand down again, her fingers gliding over rock-hard, lubricated navy blue flesh. She squeezed her index finger and thumb at his medial ring, sending another shiver through Shining Armor and continued downward until she reached the top of his sheath.

"F-faster," Shining groaned. "Please go faster."

"If you insist," she said with a grin. She immediately complied, moving her hand back up his length more quickly than before, than back down even faster.

The feeling of soft fingers stroking his slickened stallionhood instead of his wife's hard hooves was almost indescribable to the well-endowed stallion. Soon, his orgasm was building within him, his already-impressive flare widening in anticipation of the payload it so wanted to release. "I'm-I'm… I'm gonna cum!"

"Wait a minute," the woman said as she stopped her stroking. "Let me get my clothes off. If your load is half as impressive as your penis, you'll ruin my outfit."

The pony tried to take over as soon as Rachel pulled her hand away, but the anti-friction spell prevented him from massaging himself to completion. His flare shrank back, the throes of orgasm receding as Rachel pulled off her sweater and skirt and peeled her underwear away. She threw everything into a pile on a nearby chair and got back down on her knees.

"Alright, let's finish this." Rachel placed both her hands on the twitching penis this time, arms spread vertically to squeeze the base at the same time as she stroked the shaft.

"Oh fuck," Shining grunted, his orgasm rushing toward him once again. He felt himself flaring, his back going rigid as his cock tensed up.

Thick, sticky ropes of off-white horsecum rocketed out of Shining Armor's cock, getting everywhere, on the carpet, on the sheets, all over Rachel. She kept stroking faster and faster as she was bathed in the stallion's orgasm. Semen landed in her hair, on her shoulders. She angled the penis down in an attempt to get a taste fresh from the source and took a load to the face instead.

When Shining's orgasm subsided, Rachel was a dripping mess of thick, viscous pony jizz. Her face was absolutely covered in semen, as were her shoulders, her breasts, her legs. Several streaks were already drying her hair, soaking to the roots. She was kneeling in a large patch of wet, sticky carpet, breathing heavily through her mouth as she stared in shock at the penis she still grasped in her right hand.

"Where were you even keeping all of that?" she wondered aloud as one last trickle of cum dripped off the end of Shining's cock.

"S-sometimes I wonder myself," Shining blurted out, his mind still rebooting from the most amazing orgasm he'd ever experienced.

Ponies and humans had a lot to offer each other, it seemed.

Author's Note

Don't hesitate to leave a comment, and, if you want me to write more stories like this, message me on Discord at Arkadios#8775!