Mark turned to watch the rather interesting zebra who had been his guide through the Everfree take her leave, feeling his face flush as she put a sway and roll into her ample hips and rump. He’d met Zecora before this excursion into the Everfree, and while she was certainly pleasant company, he was still trying to figure out her deal.

The whole trip through the Everfree to The Castle of the Royal Pony Sisters, she’d insisted on leading the way, even though he could easily keep pace with her. And while he knew how an equine’s body moved during a casual walk, Zecora had put a rather obvious sway into her gait. And an extra wag in her tail, giving him glimpses of her marehood. Despite his best efforts not to stare, her hypnotic butt would not be denied. And the fact she only giggled and smirked when she caught him looking didn’t help.

He wasn’t as shy and uneasy about loving Equestrians as he’d once been, and had his current relationship with a certain Alicorn, apple farmer and seamstress not been an issue, he’d have probably taken up her rather blatant offer. As it was, her actions made him more uncomfortable than flattered. Even if he was in a herd, he didn’t think his marefriends would like him just laying anypony (or zebra) who offered to spread their legs for him.

Turning back to the entrance of the castle, he slowly made his way in, more because of the castle’s somewhat run down shape than out of any fear of creatures lurking in it. Luna had assured him the castle was safe when she invited him for her “surprise”, and he doubted she would’ve chosen a place that might injure one or both of them for what she probably had planned. He had no doubt she had some naughty fun in mind, the Alicorn never wasting a chance to bed him when they were able to meet.

“Luna? Are you in here?” he called, not certain where she was waiting for him. He knew her bedroom had to be one of the many rooms in the old castle, but which one was it?

“Oh? Is that you, dear Markie?” came the reply, a velvety purr coloring the words and making his spine tingle. He was no longer the shy, hesitant lover he’d been when they’d first consummated their relationship (and having three mares mating with him had certainly been nerve-wracking for him) and wasn’t the least bit ashamed to be turned on just by her sensual tone.

He quickened his pace, following the sound of her voice and the giggles that followed it. He turned into one room at the end of a long hallway and came face to face with the Alicorn of the Night. Wasting no time, he raced up to her and all but threw himself onto her, hands taking her cheeks and placing a gentle but loving kiss right on her lips.

His mate giggled and returned the kiss, wrapping her wings about him as she prodded his lips with her tongue, then pushed in upon being granted entry. Remembering what she loved most about his hands, one moved up to scratch behind an ear, the other caressing her neck and slowly making its way down to her flank. She snorted as their tongues danced and dueled, glad to see the more dominant parts of Mark were still there.

Mark was happily losing himself in his growing arousal, the thought of what his alicorn lover had in mind for him already making his pants uncomfortably tight. However, the foggy arousal filling his mind was momentarily broken when his hand came across more barrel than Luna should’ve had. With a confused hum, he reluctantly broke the kiss and looked down over her body...and staggered back, eyes wide.

“Hmm, what seems to be the problem, dear Mark?” asked Luna, giggling behind a hoof as she watched her lover stare in shock at her body.

Luna wasn’t quite as...indulgent as her sister, but she still had curves in the right places. Those curves now put her cake-plumped sister to shame. Her rump cheeks bulged out to the sides and rear, definitely larger than the ones her sister was so famous for. Her flanks and barrel were likewise rounded and bulging, giving her a pear shape. Said barrel hung quite low, causing her legs to stand further apart than normal.

All in all, she looked quite late into a pregnancy...though something in the back of Mark’s mind noted a few things off about the look. Said thought was overtaken at the moment by his shock and amazement.

“You...you’re...you...but we...only a few…! You can’t be!” he stammered, tripping over either his own feet or something on the floor and falling back onto something soft. A quick glance to the side revealed he was on a large bed.

“Hmm, perhaps you are more virile than you think? And I am a power alicorn, so perhaps I...cheated a little,” she said with a giggle, starting to walk up to him, her hooves clip-clopping against the floor. She timed her steps so as to make her larger barrel sway, the alicorn not missing Mark’s eyes following the movement.

It was then that rationality began to reassert itself in Mark’s mind and he looked Luna’s form objectively. She was larger, yes, and one could, at first, mistake her for being pregnant. But her barrel wasn’t showing the slightest bit of weight, her movements were too light and easy, and he doubted Luna would wait until she was this far along to let him know he’d knocked her up.

Something else was at play here.

“Alright Luna, you’ve had your little prank. And I admit, you got me good. But what’s really going on?” he asked, his tone soft, not a hint of resentment heard. He gave one of his warm smiles as she moved up to the bed and lifted her upper body up, pinning him down as she started to nuzzle and kiss his face.

“Hmm, I did indeed get you, did I not? And yes, you are correct, Mark. I am not pregnant. However, I dare say you know what’s going on. After all, twas your own dreams that inspired me,” she said, winking.

Mark’s hands returned to Luna’s body, rubbing along her swollen barrel and flanks, fingers testing the flesh. Rather than firm, barely yielding flesh, his fingers found the barest resistance. However, it wasn’t flab he was feeling, as her flesh was taut and smooth. Wracking his brain, it suddenly dawned on him what she’d seen in his dreams and what she’d done.

“Oh….you...you came in on some of my...naughty dreams, yes?” he asked, Luna humming and smirking as his cheeks flushed and his smile became bashful. He’d given her permission to enter and explore his dreams when they’d finally become lovers, though he’d made sure she understood that he had no control over them. She promised to never hold anything she saw against him and to immediately voice any concerns she might have.

“Hmm, I did indeed. And feel not ashamed, beloved Mark. You are hardly the first to have...naughty dreams about my sister and I. I could tell you quite a few stories about some of the fetishes I’ve seen used on us in the dreams of my little ponies,” she said, easing herself off of him and climbing onto the bed. She moved to the center and eased herself onto her side, Mark moving to rest against her barrel.

“Young Twilight’s letters tell of the lessons she gave you on the various tribes of Equestria. I take it this included lessons on anatomy and the like?” she asked, cooing and nickering as his fingers returned to her ear, idly scratching as he listened.

“Oh yes. I wanted to be sure I never did anything offensive, plus I wanted to see if you shared any attributes with equestrians back in my world. And being Twilight, the lessons were quite...detailed,” he said, chuckling. Twilight could really lose herself when she was teaching.

“Hmm, I have no doubt. So...did she happen to explain a certain difference between pegasai and non-pegasai? Specifically, an internal difference?” she asked, her own cheeks coloring. Even if she’d been bold enough to take advantage of said difference, it was still hard to discuss so casually.

Mark thought for a moment...then gulped and blushed deeper. He had a pretty good idea what Luna was referring to. His attention returned to her swollen barrel.

“They...their bodies produce helium rather than...the other kind of gas,” he said, his hand now rubbing her belly. Not only had Twilight told him about it, but he’d also seen it in action once. He’d come across Rainbow during one of her many lounge sessions, apparently burping without a care in the world. When Mark had noted her belches were more squeaky than anything else, she’d explained to him what the deal was.

She’d also explained to him what could happen if a pegasai had a rather extreme “helium attack” and didn’t let the gas out.

“But...Rainbow said it would take a lot of helium to make a pegasus balloon up. Are you telling me you...have you been holding it all in for a while? Just for me?” he asked, both amazed, amused and touched.

“Hmm, I maaaaay have cheated a little and used some magic to help. And we art lovers, dear Mark. Twould be unbecoming of me not to indulge your interests after how much you’ve indulged mine. Why, the amazing ear scratches you give have earned you that much by themselves, never mind the other ways you spoil your three lovers,” she said, giving him a kiss on the cheek. “Plus...I would be lying if I said I wasn’t interested in this fetish myself. You’ll find that a princess can gain quite the submissive streak,” she said, suddenly rolling over onto her back, wings splayed out to the side. This put her swollen barrel and flanks out in the open.

“What do you think? Is it as interesting as your dreams seems to suggest?” she asked, silently inviting him to explore. He moved to straddle her, hands rubbing up and down her flanks, then over her belly. She nickered and giggled, squirming a bit as her expanded body made her flesh more sensitive. She noted his cock was hard and visibly throbbing in his shorts, letting her know he indeed found her appealing in that way.

“It’s...it’s so much...to take in. Never thought I’d actually see it. Hell, I never thought I’d have a girlfriend who would be willing to indulge it with me, never mind actually be interested in it,” he said, looking up at her with a grateful smile that made her heart flutter. As somepony raised on different customs and interests than the majority of Equestria, Luna knew how it felt to feel one’s interests would never be shared.

“Hmm, I promise, dear Mark, that myself and your other lovers will make up for all the years you spent without a significant other. One as sweet and kind as you didn’t deserve to be alone for so long,” she said, reaching up to caress his cheek. She then giggled and suddenly rolled over, throwing him off.

“Enough talk. We wish to explore this further, so would you like to see your Luna grow bigger?” she asked, getting off the bed and turning her rear towards him. Her horn flashed and a soft hissing sound filled the air, her belly and barrel resuming their expansion before his eyes. As he stared at the spectacle, Luna raised her tail and flashed a smirk at him over her shoulder. His eyes were soon drawn to her marehood, already winking and glistening in the moonlight.

“Wow. You’re...you’re actually turned on by this? You haven’t just been eager to bed me again?” he asked, a tad surprised the princess would be into something like this. It was one thing for her to indulge it out of her love for him. It was another to actually enjoy it herself.

He saw her blush as she looked over her shoulder at him, a bashful smile replacing her normally confident gaze. Her tail began to wag happily, the lovely scent of her arousal wafting over him.

“It’s...certainly peculiar. But it doesn’t feel unpleasant. And...if your dreams were any indication, it’s quite the method of bondage. I do find the idea of being a prisoner in my own body quite arousing, especially considering how powerful a body it is,” she said, striking a pose...and joining him in chuckling at how ridiculous it looked with her swollen body. “Now, enough talk. Mine body is not the only thing growing, so your princess commands you to get to work!”

Author's Note

So, after not writing for...a long time, I have returned. And I apologize that my return doesn't include new chapters of my main story. I'm afraid I'm still suffering writer's block there.

However, the beginnings of a side story to the main story were less restricted. I should mention this is my first time writing clop outside of an RP, so please be gentle with the criticisms.

I'm still working on the second part, but will hopefully have it up soon. Again, first time writing clop outside of an RP, so takes a bit of getting used to.