Author's Note

This is intended as an idea dump of sorts for my own story concepts. Please do not solicit your own ideas.

Prompt: A heavily pregnant Rarity modeling some maternity outfits for Older!Spike in a private little fashion show. Rarity is pregnant with septuplets, and she’s showing off her ten-month-pregnant body for Spike, who is the father. Spike is looking on with great interest, leaning back and leisurely jerking off while he enjoys the show. Before he can cum, Rarity climbs down and mounts him cowgirl, letting him orgasm inside her. Spike has a ridged dick with a tapered point, along with a thick, bulbous knot at the end. Rarity is modeling a navy and violet dress with a silver hem.

Contains: Feral, Sex, Pregnancy.

Carousel Boutique's Maternity Line - In Stores Now!

Art by Patch

“What do you think, Spikey?” Rarity asked.

Spike licked his lips as he leaned back in a couch, his claw wrapped around his dick. “Oho...”

Rarity was clad in a lavish dress of navy and violet with a silvery hem. It almost looked like she’d cut out a portion of the night sky and turned it into a dress.

“Rarity…” Spike’s mouth was dry. “Just… wow…”

Rarity did a gentle spin, showing off every bit of her curves. She made sure to give him ample view of her generous rear, as well as her swollen breasts between her rear legs. “I just only just fit into it, you know. I swear, your children are wreaking havoc on my body!”

A lie. A shameless, bold-faced lie. Every aspect of her body had been ratcheted up to eleven by her pregnancy, even moreso that she was nearing the end. Her mane and tail were thick and full, sporting a sheen that most mares spent their whole lives chasing after. Her heart-shaped ass was delicious, and he could spend hours staring at it. Her legs were long and shapely, now sporting a sexy amount of muscle, and the cause of that muscle? Her burgeoning, gravid belly, massive with seven foals, all the more alluring by the fact that they were his…

Spike squeezed his length, his grip lingering around his knot. “I regret nothing.”

“Hmph.” She slid the back of her dress up, letting him see her dripping, tantalizing sex. She moved her tail purposefully, fanning her scent in his face. “Of course you wouldn’t. Where’s the gentledrake I married? When was he replaced by a deviant?”

Spike’s eyes were intense. He inhaled deep, the strong, familiar scent of excited mare washing over him. “Right about when you got pregnant.”

Rarity stuck her head up in the air. She lowered her dress and down and looked back at him, her eyes coy. “Naughty boy. I certainly hope you don’t spread those bad habits to our children. Look at you! Masturbating while I’m just trying to show you my new maternity line?! How rude!”

Spike just pumped his dick his dick faster. When she’d asked him for his opinion on a new dress she was working on, she’d had that look in her eyes. That look was a good look. It’d led many times to good things, seven of which were now growing in her womb.

“I’ll admit, I’m going to miss teasing you like this,” Rarity said casually. “When you first told me you had a pregnancy fetish, I didn’t quite believe you. But over these last months, you’ve been all over me...”

Spike grinned like a wolf. “I have you to thank, my Gem. I’ve wanted you, wanted you so bad… it’s helped me to be a better stallion for you…”

Now that wasn’t a lie. Dragon greed was incredibly malleable, attaching to concepts and things that you wouldn’t think. Spike was just the right size Rarity had always hoped for--a head taller than her, but not so big as to be unwieldy. His muscles were firm and defined, but not overly so like those brutish louts she saw down at the gym. His face was charming, with kind eyes that had that exotic air, and his claws… oh, my… the things he could do with them… not to mention that tongue of his…

His cock wasn’t lacking, either. It was different than a pony’s, but alluring in its own way. It was more tapered than she might’ve expected, but he could leave her a quivering mess with it. His thick knot was a dream, and when he popped it inside her...

“Spikey, I just don’t know what I’m going to do when I can’t model for my own clothes!” Rarity bemoaned. “I suppose I could hire somepony else… but that just doesn’t have the same effect! It’s just not the same without trying the clothes on myself! I need to feel them, I need to know them!”

Spike pursed his lips. Thoughts were whirring through his head, fantasies playing out. A fresh spurt of pre dripped down his length, further lubing him up.

“If this line takes off, there may not be anything for it.” Rarity gave Spike a smoldering look. “You just might have to knock me up again. It’s the only way I’ll know if I’m catering to the needs of mothers to be! And being pregnant with seven at once, that’s a pretty high bar to clear. I might have to use some fertility spells to help you…”

Spike growled. He could feel the pressure stirring in his loins, his pelvic muscles tensing.

“I’d have never known about how pregnant mares move if it weren’t for you,” Rarity said. “I suppose it’s to be expected with you being raised by Twilight that your knowledge of pregnancy would be encyclopedic. Without you, I'd have never learned how to keep my balance, how I need to time my steps with the sway of my belly, and so, so much more. I first thought that maternity lines were all about downplaying the bump, but thanks to you, Spikey, I’ve learned to emphasize it, to embrace it...”

Spike grit his teeth. His whole body was on edge, his heart rising in his chest. “You are so f-fucking hot…”

“Mmmm, I know.” Carefully, Rarity took off the new dress. She stepped off the podium and sauntered up to Spike, her eyes on his leaky dick. “I feel your eyes on me wherever I go, watching me, undressing me. You just can’t get enough of, can you?”

Spike had no reply as Rarity straddled him, the lips of her flower moving towards his pride. He only had eyes for her titanic womb as she thrust it into his face, gasping as a drip of her arousal fell on his balls. His claws moved to grab her flanks, kneading them, feeling the layer of baby fat. Her foalbearing hips had widened over the course of the last half a year, giving her a set of that were the envy of all of Ponyville.

“I’ll take that as answer enough...” Rarity let him guide her downward, the petals of her flowers grazing his tip. Her pregnant belly filled both their laps, taking up all their space, but that just turned Spike on all the more. Her velvety pussy swallowed the first third of his dick, and he thrust further, pushing in another third beyond that. Rarity let out a lusty purr and kissed him, her mouth enveloping his, his tongue snaking out to taste her.

She settled more and more of her weight atop him, until all that was left his knot. She began riding him, flexing and squeezing her hips, wiggling back and forth. Spike’s claws travelled up and down her back, feeling like dextrous combs. A kick from on etheir children pushed out beside her navel, pressing against Spike’s abs and making him jolt. His eyes shrank to pinpricks, and was soon thrusting inside her, her pregnant weight pushing him deeper into the couch, but that just turned him on all the more. He gripped her possessively, her sexy moans the perfect background to the wet, sticky sounds of sex.

Rarity was in heaven. The heat of Spike’s body, of a dragon, was so much. But it was so much in the best kind of way. She kissed him harder, her nostrils flaring, her ears twitching with their lewd noises. Her libido had been on high all day, he knew all her best spots, and he was attentive to her sounds to know when she was getting close.

And getting close, she was. She picked up the pace, her silky walls threatening to clamp down on him. Spike was right there as well, and he was starting to thrust harder, his claws creeping up her shoulders, forcing her down. Rarity felt her marehood stretch, widening, gradually engulfing his knot. She licked his neck, moaning loud as he wedged inside her with a telltale POP!

They both saw white. Spike gripped Rarity hard, pumping load after load of potent dragon seed flooded Rarity’s tunnel, filling her to the brim. Rarity squealed, feeling a flood of his hot essence erupt inside her. Spike’s knot was a perfect seal, and his cum remained trapped inside her, her insides awash in delicious heat. She coaxed as much out of him as she could, relishing all he had to give, riding out their highs for as long as possible.

They both came down. Panting, they stared into each other’s eyes, their thoughts on the nascent lives nestled between them.

“...Can't wait to see you pregnant with double digits,” Spike said.

Rarity swatted him.