Rainbow Dash’s tail was lashing as she lay on the bed. It wasn’t that she was upset—precisely the opposite, in fact—it was that she was, as always, not great at being patient, and Twilight was taking forever to come up.

Then Rainbow heard hooves in the stair, ringing against the crystal, and she was immediately conscious of the way she was lying on the bed, just limply sprawled on her back. Was that sexy? Should she pose so she’d be looking sexy when Twilight came in? How could she even do that without a mirror to see herself in? Lots of mares seemed to be able to, Rarity struck sexy poses all the time. Rainbow would probably just look dumb if she tried.

“Sorry it took so long.” Twilight stepped into her bedroom, a sheepish smile on her face. Rainbow couldn’t help but smile back. Trying to look perfectly sexy didn’t matter, did it? Rainbow was a total dork, but Twilight was an even bigger dork..

“It took a minute to find this.” Twilight waved a silvery egg-shaped object she held clutched in her magic. It glowed with a warm indigo light that came from Twilight’s magenta magic mixing with the object’s own blue glow. Giving a little shrug, she said, “I put it somewhere so I’d know where it was, and you know how that goes.”

Rainbow couldn’t help but giggle, the last of her worries about looking stupid fading away. She and Twilight could embrace their awkwardness together, the same way they’d done so many times. Tonight was special, but it was still her, Rainbow Dash, and still Twilight Sparkle who she loved more than anything else in the world.

Twilight trotted over to the bed, her scapular feathers all fluffed up and her tail swishing with a high arch that told Rainbow everything she needed to know about Twilight’s current mood. Rainbow herself could feel a certain warm anticipation between her legs.

“Now, my wonderful, sweet, incredibly sexy love,” said Twilight, hovering the egg in front of Rainbow. “This need to get inside you somehow. The instructions that came with it suggest breaking the stasis spell and extracting the genetic material into an appropriate container, but I had something else in mind.”

“’Extracting the genetic material into an appropriate container.’” Rainbow rolled her eyes, her tone playfully mocking. “Twilight, you nerd. Is that your idea of foreplay?”

“The proper term is ‘egghead’,” said Twilight with an exaggerated pout, though a moment later a smirk curled her lips up. “And no. My idea of foreplay is to not extract anything, but to see if I can get you nice and wet and wide open, so I can push this whole thing right in and dissolve the stasis spell inside you, filling you up and getting you, my currently fertile lover, pregnant with our foal.” Twilight drew the egg—filled with donated semen from the sperm bank, from the anonymous stallion whose stats they’d liked—down Rainbow’s belly, the cool of the stasis spell and the warmth of Twilight’s own magic tingling against her hide.

“Oh!” Rainbow shivered, her wings popping open to splay out across the bed. Twilight still sounded like such an egghead, but the mental image that came with what she’d just said was hot as anything.

“It’s pretty big, bigger around than the toys we usually use,” said Twilight, dragging the egg in little circles just below Rainbow’s navel. “But I think you can take it. Can’t you?”

Her voice turned challenging, and Rainbow couldn’t do anything but reply, “Of course I can take it!”

“Oh good.” The smirk was back as Twilight trailed the egg down lower, brushing it between Rainbow’s legs. Rainbow wasn’t very wet yet, but she could feel herself getting further aroused as Twilight twisted and rubbed the egg over her outer labia, right over where her clit lay, making her whine involuntarily.

“But first I think you need a little warm up,” said Twilight. The egg was suddenly gone, and Rainbow, realizing she’d shut her eyes, opened them to see Twilight climbing into the bed with her.

Twilight immediately went for a kiss, pressing their muzzles together and pushing her tongue into Rainbow’s mouth in a way that spoke of eagerness, of heated desire, of wanting to take and claim. Rainbow moaned into the kiss and gave as good as she got, pushing back against Twilight’s tongue with her own. It was half passion and half struggle for dominance, and for a while Rainbow managed to push her tongue deeply into Twilight’s mouth, taking charge, asserting herself. Yet somehow, as she always did, Twilight got the upper hoof, not only pinning Rainbow down physically with her larger, alicorn’s physique, but being so aggressive, so assertive with her kiss that Rainbow couldn’t help but eventually give in and melt into it, her tongue giving way, letting Twilight’s dive deep.

Once Twilight had sufficiently asserted herself, she broke off the kiss, looking down at Rainbow with a satisfied smile on her face. Rainbow licked her lips, a shiver running down her spine. How could such a dork be so incredibly sexy?

Twilight took a deep breath. “Mmm. I can smell you. You must be nearly warmed up enough already, just from a kiss.” Twilight giggled. “So slutty! I love it.”

Rainbow squirmed, feeling her cheeks heat in embarrassment. It was a pleasant kind of embarrassment, though, she liked being teased like that by Twilight, and Twilight knew it.

“I bet you taste amazing too. Let’s see.” Twilight lowered her muzzle and lapped at Rainbow’s pussy. The slick pressure of her tongue pressing over Rainbow’s sensitive lips felt amazing, making Rainbow moan. The involuntary sound was ridiculous, and Rainbow flushed, but it seemed to only egg Twilight on, she started licking in a steady rhythm, pressing her tongue in further with each stroke, parting Rainbow’s outer labia, and the inner too, to eventually lap over her clit.

Rainbow’s already embarrassing moan slid up to a gasping squeak at that, her wings snapping out wide and her back arching, hips lifting involuntarily to Twilight’s questing tongue.

“Mmm,” was all Twilight said in response, and she wrapped her hooves around Rainbow’s thighs and settled in, licking eagerly, expertly, making Rainbow writhe and whimper.

Soon Rainbow had her back arched, her wings stretched achingly wide, and her legs twitching, hips lifting, while Twilight held her down firmly and continued to lick relentlessly. Rainbow’s moans were growing higher and higher in pitch, but before they could reach a crescendo, Twilight suddenly lifted her head.

“Sounds like you might be ready. Let’s see, shall we?” There was a pause, and Rainbow, feeling disappointed that Twilight had stopped, opened her eyes to see Twilight scooping the egg up in her magic.

Twilight rubbed the small end of the egg against Rainbow’s labia, making Rainbow squirm at the cool-warm tingle of it. “Oh my, this just slides around, you’re so wet!” Twilight let out a wicked little giggle. She rubbed the egg up and down, sliding it teasingly over Rainbow. “Let’s see if it’ll fit inside…”

Twilight started to press the tip of the egg in. Rainbow moaned at the feeling of being spread open. The narrow end parted her lips easily, began to press inside, but almost immediately the wider middle of it began stretching her. Rainbow whimpered, the sensation edging towards pain as Twilight slowly pushed the egg forward. The egg was so big, and she suddenly wondered if her mouth had yet again gotten her into trouble, with her declaration that she could take it. Could she?

With another of those little giggles, Twilight began to rock the egg back and forth, moving it just a tiny bit at a time. Rainbow whimpered again, squirming, almost wanting to pull away as each forward nudge stretched her out, but wanting to push down too, to feel the egg filling her up. “You make the best sounds,” said Twilight, continuing the slow, relentless motion.

Rainbow wanted to say something in protest, but she couldn’t manage to get any words together. All she could manage was another whimpering sound. Twilight just giggled again and rocked the egg harder against Rainbow, pushing it fully in, which made Rainbow gasp sharply. The egg slid more easily now that it was fully inside, but the stretch was still bordering on painful.

A shock of pleasure went through Rainbow, and her befuddled mind just managed to realize that with the egg now fully inside, Twilight had leaned down and licked her again. Rainbow felt herself clenching around the massive egg as Twilight’s clever tongue found her clit and began lapping over it.

Rainbow moaned loudly, her wings aching, stretched out wide on the bed. She was full to the brim with the egg, and Twilight’s tongue was driving her mad.

Finally she managed to gasp out, “Twilight! Please!” and Twilight instantly redoubled her efforts. Her tongue lapped insistently, and Rainbow squirmed, clenching down on the egg, and moaned loudly.

Twilight didn’t relent, she continued, doing exactly what she knew Rainbow liked. The egg pushed even deeper, the tip pressing against Rainbow’s cervix, adding a more intense pain to the ache of the egg’s stretch. Rainbow whimpered and squirmed, then breathed a sigh of relief as Twilight withdrew it by some tiny fraction. A moment later she gasped and let out a whimpering cry as it pressed down on her cervix again. Meanwhile Twilight continued to lick. Her tongue seemed full of endless energy, working over Rainbow’s clit again and again. The pain of the egg against her cervix was too distracting, too much, holding her back from the pleasure that she trembled on the very edge of. She writhed and moaned, wings thrashing, body bucking, her voice shameless, all worry about how uncool she might sound or look totally forgotten. The egg bore down relentlessly within her, and Twilight licked relentless without for what seemed like an eternity.

The pain denied Rainbow her climax, keeping her there, holding her back, the intertwining sensations a wonderful, horrible torture. Then, finally, Twilight pulled the egg back by some tiny distance once more and began licking with unbridled enthusiasm, until Rainbow finally arched her back and cried out, pushed over the edge by the combination of the slick pressure against her clit and the overwhelming pressure of the egg within her.

In the instant after the wave of her orgasm crashed over her, that pressure vanished as Twilight broke the sealing spell and released a flood of hot, perfectly preserved seed within Rainbow.

“Ah!” Already awash with pleasure, Rainbow felt an even more intense shudder go through her. Twilight didn’t merely release the seed, either, she began almost immediately to use her magic to corral and push it within Rainbow, renewing the pressure on her cervix. Now, though, it wasn’t a hard egg, but the hot, wet mass of semen that Twilight’s magic was driving against her, sending a stream of it squirting deep within, into Rainbow’s womb.

“Oh, Celestia!” Rainbow couldn’t hold back the cry, another shuddering convulsion of pleasure going through her. It was all too much, and she felt like she was on the verge of fainting, but although the world went hazy around her, it didn’t quite go away.

Slowly the physical pleasure of her orgasm and the weirdly intense mental pleasure of knowing she was maybe being impregnated right then both faded and reality reasserted itself.

Twilight had legs and wings both wrapped around Rainbow, cuddling her in a warm, comfortable embrace. Rainbow sighed happily, loving the way Twilight held her. She’d never, ever, ever admit it out loud, but she kinda liked being so much shorter than Twilight. It was nice. Her whole body felt warm too, a fuzzy pleasure lingering in her. As she finally managed to have a coherent thought, though, her mind went instantly to their purpose tonight.

“So, did it work?”

“Hmm?” Twilight nuzzled her cheek, her voice softly puzzled.

“The pregnant thing, did it work? You can like, look with your magic, right?”

Twilight chuckled. “Oh, Rainbow. I wish! But it’s just two cells. Even knowing more or less where to look, finding just two specific cells and seeing if they’ve gotten together yet is impossible. Your body’s natural magic will drown out any magic from the union entirely for weeks yet.”

“Oh. We won’t know for weeks?” Rainbow couldn’t help but sound plaintive.

“Don’t worry. Assuming you are actually ovulating right now so there’s an egg to be fertilized, then we’ll know in about a week, when implantation happens and your own body chemistry starts changing. That’ll show up to my magic sooner than the embryo itself.” Twilight smiled. “If you’re not ovulating now, but still do in the next day or two, the sperm will still be good, and we’ll know a week after that.”

Rainbow frowned in thought, but that math was simple enough to be easy for even her non-egghead self. “So one week, maybe plus two or three days.”

“Yep! I’ll scan you every day. Though we don’t have to wait a week long to try again.” Twilight grinned. “Today was the most fertile time, probably, but there’s at least another week in your fertile window, and I’ve already been promised two more eggs, with two more nice, prime stallion loads.” Twilight giggled wickedly. “So we have lots of fun to look forward to.”

Rainbow felt her cheeks flush, but she giggled too, and gave a little wiggle in Twilight’s embrace. “Sounds like fun! Though if we have too many rounds like this one, I might explode or something, that was really, awesomely intense!”

“I’ll take that as a compliment,” said Twilight smugly. “And I’ll try to do even better next time. Assuming you can take it.”

“Of course I can take it!” said Rainbow, and even as she knew her mouth was probably getting her into trouble again, she had no regrets whatsoever.