Avalanche from a Flurry

Celestia raised an eyebrow. "I didn't expect to see you back so soon, Twilight. It hasn't been a week."

Twilight nodded. "I have made a discovery that may be useful to you right away, so I came right over as soon as I'd…" I wonder which of the crusaders is going to kiss each of my friends. "… set some things in motion back in Ponyville."

Celestia lifted her teacup and raised an eyebrow. "Indeed?"

"But perhaps not. Have you spoken with Flurry Heart in the past few months?"

Celestia nodded. "Several times. She asked some peculiar questions."

Twilight gulped. "Really?"

"Yes. It has been some time since a pony was brazen enough to ask just how many ponies I've loved romantically."

Twilight chuckled in a strained fashion. "I see. And did that have any aftereffects?"

Celestia lowered her cup, thought, and then took another sip. "Yes, one could say so."

"Do you need any advice on getting rid of them?"

"They only lasted a few hours."

Twilight blinked rapidly. "How… what did you do to get rid of them?"

Celestia turned her head and looked at Twilight with one eye. "What would you recommend me to do?"

"Kiss somepony for more than a few seconds. Other ponies need to choose someone not in their age group. For you, it only excludes Luna."

Celestia smirked and glanced aside, chuckling. "Ah."

"So, what did you do?"

"More than necessary, apparently."

Twilight gulped. "I see. This raises my other question, I guess. Do you have any advice on my getting a boyfriend? It's not so urgent as it was when I was affected, but it seems like something I'd like to do in the medium term anyway."

Celestia slowly built up a low pleased laugh. "I am perhaps the worst mare to ask about this…"

Luna's voice suddenly cut in from behind Twilight, "I can think of quite a few worse… all of them criminals."

Twilight turned. "Okay, so would you provide any better advice?"

"If you want a lover to actually love instead of infrequent, incredibly discreet but intense sexual gratification, then yes, I would."

Twilight looked back to Celestia and gulped.

Celestia laughed harder. "Sister, surely you have not pried closely enough to know what I actually do on my little jaunts. Indeed, you have been returned for only two of them."

Luna shrugged. "Indeed I have not, but I stand by my conclusion."

"Also, to say what you just said was in itself indiscreet."

Luna blushed, nodded, and lowered her head. "It has been hard since Flurry Heart's visit."

Twilight clapped her hooves. "I take it you haven't kissed anypony on the lips since then?"

Luna balked. "What? Is the solution that simple?"

"Sure. Let's kiss, get you straightened out."

Celestia laughed as Luna mildly panicked. "Ah, young Twilight, I am not so sure…"

Twilight shrugged. "Then not me. Any pony would do, except maybe your sister."

Luna grunted, then rushed forward and planted a firm kiss on Twilight's mouth. After five seconds, she sighed. "Ah. That is… surprisingly abrupt relief."

Twilight chuckled. "Yeah. Not quite sure how this one works. Anyway, now we have this all settled."

Luna remarked, low, "Your parents are still affected."

Twilight gasped. "I have to go!"

She ran until she was outside, past the magic-obstructing walls, then teleported to a high point in the air, then to the door of her parents' home. She was about to enter when she noticed that an alarm spell had been erected. How peculiar. This is a safe neighborhood. Twilight examined the mechanism for a few moments and disabled it. She unlocked and opened the door, and stepped through, not noticing a second layer of spell until her horn began to pass through it. She stopped immediately, felt the magic, determined it to be harmless, and proceeded.

The spell effect had clearly been soundproofing, as the moment her ears were through, she heard wordless screaming. Her mother's. In ecstasy.

Twilight blushed, then closed the door and re-enabled the alarm. With her inside. She was just about to set up her own soundproofing bubble and sit down to wait for them to finish, when a few words made it into the mix: "Shining! Yes! This is probably your last chance to get me pregnant!" A few moments later, she added, "Again!" There was a male laugh.

She had frozen upon hearing her brother's name. She was ready for some things, but not for that to actually be happening. She nearly brought herself to action but froze again upon hearing 'pregnant'. By the time 'again' came, her determination to act had built to the point that that added detail wasn't enough to stop her - even if it had the worst implications, those implications didn't come to her in time to interfere. She teleported to the hallway between the rooms. Her parents' room was empty; the noises were coming from Shining's. She opened the door.

Twilight Velvet was lying crosswise on Shining's bed, half on her side, half on her back, splayed wide open with her left hind leg way up in the air. But rather than her son, her husband was mounting her from the ground, mostly upright.

Twilight's panic instantly evaporated. Just roleplay. Phew. She breathed deeply in relief several times, until her mother made eye contact with her. After holding it for three seconds, shuddering, Twilight Velvet said, "Twilight Sparkle is watching us."

Night Light finally spoke up, "Oh, that's perfect. When we're done I can…"

"Be Night Light for a moment, dear."

"Right in the middle of the scene? Skipping the buildup?"

"Look behind you."

Night Light glanced over his shoulder without slowing down. "Oh." He ever so slightly picked up the pace. "Hi. A little warning would be nice before dropping by. Just a minute. Right, dear?"

Twilight Velvet wasn't able to verbally respond as she began to come. She launched herself into a more vertical position and grabbed her husband tight, pulling him more deeply into her. She began screaming in earnest. Still maintaining eye contact with her daughter, aside from brief interruptions.

Twilight Sparkle froze again. Wow. I really do need a boyfriend. Or maybe a husband of thirty years would be better.

Just as her mother's screaming began to subside, her father moaned lightly once, and stiffened. Her mother finally shifted her eye contact to her husband, and they began kissing rapidly. Twilight Velvet relaxed back onto the bed, and Night Light settled on top of her, still gently pumping. Twilight Velvet softly said something Twilight Sparkle couldn't make out, and he stopped.

After five seconds of their lying together, semen slowly began to escape her vagina. It slid down her thigh, came to the lowest point, elongated, fluid collecting in a gigantic drip connected by an increasingly thin strand… Twilight Sparkle's magic caught it before it could fall on the rug. It was purely reflexive. Her thoughts were elsewhere:

They're affected, obviously. Now, am I still affected, or is this just regular sexual excitement? I've heard that others are ashamed or disgusted by the very idea of their parents having sex. I never have, though I rather avoided thinking about sex altogether until Flurry got me started. But when I did think about my parents having sex, even before then, I hoped they were having a good time and didn't find it especially repulsive. And it seems they are having a good enough time, though the particular choice of 'scene', as he called it, does seem to be affected.

Night Light's horn lit up. He pulled out, sat up on the edge of the bed, and found Twilight Sparkle's magic already holding the drips. He looked at her, then at it again. "Do you want that for yourself, or do you just not know about Sea Mane's Removal?"

Twilight Sparkle blinked. "Uuuh, the latter. I guess it's very good at cleaning… that… up?"

He nodded.

Twilight felt like she needed to get things on track. "Soo… did this all start after Flurry Heart asked you a question?"

Night Light seemed genuinely confused. "This all… Twi, we've been having sex since before you were born. That is, after all, why you were born."

"I mean the roleplaying as your children part, obviously!"

"Oh, that? Yeah, I guess that picked up when she asked Velvet what it was like to have a foal."

Twilight Velvet laughed, now lying supine. "Dear, it did more than pick up. It rather took over our fantasies."

He allowed, "Well, yes."

"And from the fact that you asked that specific question, I am guessing it didn't just affect us."

Twilight Sparkle said, "Yes! It wasn't just you. Others were affected." She swallowed, unable to tear her eyes away from her mother's gaping, dripping vulva.

Night Light, noticing, said, "She's beautiful, isn't she?"

"Ummmm. I was… umm."

"Want to eat her?"

Twilight Sparkle glared lightly at him. "I was more thinking along the lines of offering the cure I've discovered."

Twilight Velvet lifted her head. "A cure? I suppose the possibility hadn't crossed my mind. What does it do?"

"It makes the thoughts less intrusive. You only think them as often as you normally would, instead of compulsively all the time. And what's left can be explained by simply remembering, so I think that part of the effect is simply gone."

The parents shared a look. Night Light frowned. "Well. I certainly appreciate certain aspects…"

Twilight Velvet pursed her lips. "Yes, quite. But aside from my increased libido, it has been rather disturbing how non-disturbing it's been. I hope that makes sense."

Twilight Sparkle nodded and said, "I don't know if I just had a sexual awakening, but the libido increase doesn't appear to me to be taken away entirely. If at all. It just blunts the worst effects. It might not be a total cure at all? The cure isn't a fancy bit of spellwork like you might expect from me."

Night Light said, "I can go take it. This is all, perhaps, a bit much. If it's not a spell, what do we need?"

Twilight Sparkle swallowed. "Well, just… kiss me. No tongue. For something between five and forty seconds. It doesn't need to be me, could be anypony else who's not in your age range."

Night Light looked to his wife and then his daughter in near disbelief. "That… works?"

Twilight Sparkle nodded.

Night Light laughed out loud, then patted his leg. "Well, take a seat and get on with it."

She coughed. "I… Dad, I do draw the line there. Please stand up and we can face each other."

He sighed, then pitched forward and went to all four hooves, bringing his face near hers. She hesitated. I would expect this to still be well beyond my comfort zone, considering what they were just doing, but I don't actually feel incapacitatively awkward, so I may as well introspect while executing the treatment. She brought her lips in contact with her father's. They grazed, then he increased the pressure some. They are quite right to be in wonder that this works. It doesn't seem to follow any of the principles for breaking enchantments - quite the opposite. For instance, to break love poison does not require going along with it, but strict denial. Her father backed off on the pressure again, grazing her lips with his, their breath tracing, tickling each other. Perhaps this is a specific triggered response? If so, why would it trigger on this? Perhaps it is a safety valve - if you begin to act on it, then it stops pushing. The kiss reintensified. Twilight glided sideways along her father's face, kissing the side of his mouth, his cheek. It was a sensuous parody of a child's kiss. Alternately, it may be training us to do the thing which actually makes it worse. Perhaps I should have held off a few days before applying it to every single pony I could get to whom I knew was affected. Back nose to nose, Night Light nibbled her lower lip a little.

"Excuse me, that is not… Mo-om!"

Twilight Velvet was gently clopping with her left hoof while watching them, supporting herself with her right. She asked, "Honey, are you feeling any better after that?"

He frowned. "Maybe? It's a little hard to tell. I think so. If by 'better' you mean I'm able to focus more directly on how hot you are as opposed to how hot it would be to bend little Twilight over so she eats you while I knock her up?"

Velvet exhaled sharply. "Yes, that does sound better."

"Mom? Didn't you just come?"

"Yes, and?" She kept going, though not very intensely.

"Well, after I finish, I'm pretty well worn out for a couple days."

"When I was your age, I was that way too."

"Of course, I've only finished seven times, all of them in the past month, so maybe as I get more experience my refractory period will shorten."

Her parents' jaws dropped, and Twilight Velvet stopped rubbing herself. She said, "Oh my. I have been a terrible mother, just assuming you'd discover how to please yourself instead of making sure."

"I think that falls outside the range of your parental duties. Plus, I knew. I did succeed on the second try. Well, third, but the first was interrupted. Anyway, I just never tried until recently."

Twilight Velvet looked to Night Light, then back to Twilight Sparkle. "Huh. Should I have worried that you weren't going to be interested in getting married?"

Twilight Sparkle laughed. "I don't know about then, but not after this. You might be the last two ponies in Equestria I haven't told I need a boyfriend."

Night Light raised a hoof to his chin. "Actually, it might be better not to get a boyfriend if you're in that state. You might go for the most available instead of the best match."

"Maybe so, but I'm in this state!"

"Until you actually have sex, sure."

Twilight Sparkle gulped. "Are you advising me to have casual sex?"

Her mother said, "Well, another option is to leave your mate selection up to your friends so you end up with decent judgement being applied. That's what your father did. I did the other one."

"You… had casual sex before picking out a coltfriend."

Twilight Velvet nodded. "Carefully, but yes. Kept my mind clear, so I was able to find this gem." Her horn lit and a little heart appeared above Night Light's head. He blew her a kiss.

A slight eyebrow-raise. "And keeping your mind clear was exactly what you had in mind at the time, I'm sure."

"Don't be silly! But, it was one of the positive effects. It was the aspect of it that had the biggest impact in the long run, and it was definitely positive." She sighed. "Of course, you're under a magnifying glass now, so I don't suppose that's practical."

Night Light interjected, "Just to be clear, I wasn't a virgin when I met your mother, either."

"What about pregnancy? Disease? Wasn't that… dangerous?"

"Sea Mane's Removal is highly effective for both if used shortly before you start. At least, for most diseases. There are some you still need to look out for, but you can look out for them since they're symptomatic if they're contagious. I'm surprised you don't know that already. It was in the curriculum at the school for gifted unicorns, and I understand in the public schools as well. It's not a hard spell. Mostly powered by the magic inherent in the semen. Very clever design."

Twilight Sparkle's ears flopped back. "I… may have skipped that class by arranging a one-on-one session with Celestia at the same time, every single time that topic came up."

Twilight Velvet went on, "But for you, I think a more advanced technique might be good. Petrify your eggs. Save them for later. You may live a long time, and may want to have foals in two hundred years, or a thousand. And in the mean time, you won't get pregnant by accident."

Twilight Sparkle blinked. "That's actually a very good idea. Strange to think about such distant times… but before it's too late is the best time. Is there a specific spell for that? It may come up rarely."

Her mother nodded, then shook her head in response to the two questions. "You were petrified twice before you were born, dear - once until Shining, then again after he was conceived."

"Guess that makes four times total, then… anyway." She looked at her mother, with her oozing cunt, oozing her father's semen, her father's semen oozing from her mother's cunt. "Anyway." Her father standing next to her, surely, visibly, obviously still virile, strong, probably still willing, and definitely discreet. "Annnnnnyway." And her mother, still bearing fresh eggs ready to un-petrify. And she could teleport one of them into herself, her father could get her pregnant with her own full sister, not even a half sister, and she could pass it off as being surrogacy and nopony would suspect, and it would hold up under genetic testing. And all that time she'd be pulling one over on everypony, showing off how she'd nailed her father and they wouldn't be able to recognize it. That was definitely possible. Absolutely possible. But really stupid. I think I need to stop feeding these thoughts.

Deep breath. "Anyway, we need to do something constructive about this. I get the feeling that kissing may not be the cure I thought it was, considering I still kind of want to bonk you, dad." He chuckled nervously. "So, first thing we need to do is to preserve what's left of our control group. Which, as far as I can tell, consists of mom and Tempest Shadow." She looked to her mother. "Mom, don't kiss anypony but Dad. Dad, don't sex up anypony but Mom." Facetiously, she added, "I know, these are supremely onerous burdens, but we all have to make sacrifices."

Serious again, she said, "But I also need to figure out what the effect is, where it's from. I've done all sorts of magical scans, but I don't know what to look for. There isn't any dark magic acting on me. If only I knew if Flurry was really Sk…"

Her eyes had drifted off of her mother, to where she was still holding the glob of her father's semen. So very… ingestible. And she remembered something that looked like that, that she had in fact ingested. "Of course! The alicorn memory potion! If she has more, I can use it, aiming at Skyla, that could help! At least, rule some things out, but maybe actually get a handle on it!" She took a deep breath, banished the semen blob to the toilet, and said, "Okay, love you, I'm off to see if I can figure out what this is all about."