Bet You Won't

by Holy

Rating: mature
Tags: Rainbow Dash, Porn, Comedy, Random, Sex, Twilight Sparkle, My Little Pony: Friendship is Magic
Length: 4165

Rainbow Dash challenges Twilight to do something a little more daring than just looking after the library. Something that involves about forty stallions and a kiddie pool.

Rainbow Dash mentions that she doesn't think Twilight is all that adventurous. Determined to prove her wrong, Twilight accepts anything that Rainbow can throw at her.

Little does she know what Rainbow Dash can whip up with a few of the stallions around Ponyville.

Lesbian Bukakke. No I'm not kidding.

Proofread by Liger Storm
Edited by DiscordedDiscord

Published 2014-10-03 20:10:01 UTC
Last updated 2014-10-03 20:10:01 UTC

So Worth It

Rainbow Dash sat in her usual spot in the library, casually flipping through the latest Daring Do novel for the eighth time. Twilight kept herself busy with her usual chores of restocking and stressing over errant dust. The two lived in their usual worlds, not paying much mind to each other, and going through their regular routine for the lazy weekday.

Rainbow entertained herself by trying to imagine Twilight in the role of her favorite heroine. The thought of the normally introverted librarian trying to dodge traps and fight monsters made her laugh loud enough to where Twilight could actually hear her. Rainbow couldn't help but roll over and chuckle even louder as the thought progressed.

The sound of Rainbow's continuous giggle cut Twilight out of her concentration. She furrowed her eyebrows and looked over at her friend. "What's so funny?"

Rainbow tried to stifle her laugh, but failed as an even bigger torrent of chuckles hit her when she actually looked over at Twilight. "Oh... heheh... nothing."

Twilight was already tugged out of her usual groove; she wasn't going to just let this one slide now. She trotted over to where Rainbow was laying next to her book, and put on an expectant smile to try to join in on whatever Rainbow was enjoying. "Oh come on. It couldn't be nothing if it has you laughing that hard."

Rainbow knew Twilight wasn't going to take kindly to her thoughts, but she was finding them too funny to care at the moment. "Oh I was just imagining you trying to be Daring," Rainbow said. She followed it up by putting a hoof up to her mouth to try and stifle herself.

Twilight took a step back, raising a hoof up, slightly offended. "And just how is that funny? I could completely handle a situation like that," Twilight said, closing her eyes and trying to act like she knew what she was saying.

Rainbow completely lost it at that, rolling over onto her back again and letting out a hearty laugh. "Oh please, Twilight. You'd probably try to take notes about the traps and reason with all the monsters. You could never be adventurous," Rainbow said with a teasing smile.

One of Twilight's eyebrows twitched. She knew what she was capable of, and she didn't like that Rainbow doubted her so much. "Oh yeah? Well I think I could be just as adventurous as Daring Do or you. Just look at all the things we've been through. I could handle it, no problem."

That wiped the smile off of Rainbow's face quickly. Now her own pride was on the line, and she couldn't let the pampered princesses pet show her up. Rainbow jumped to her hooves and looked Twilight right in the eye. And idea formed in her head, and a cocky grin formed on her face. "You think you're up to the challenge, huh?"

"I most certainly am," Twilight said in a huff.

"You think you're just as adventurous as me, huh?" Rainbow asked, louder this time.

"Yes!" Twilight said, holding her ground sternly.

The two girls stared each other down for a moment, with Twilight's indignant expression against Rainbow's cocky grin. Rainbow Dash eased up and let her grin soften. "Well fine then. Prove it," she said, nudging Twilight playfully. "Tomorrow, outside of town hall. We'll see if you can put your money where your muzzle is."

"I'll be ready," Twilight said, starting to circle around Rainbow, "And I think you'll be surprised just how daring I can actually be. It'll be worth it just to prove you wrong," Twilight said matter-of-factly.

Rainbow could only giggle in response. Twilight struggled to keep her nervousness down at the pegasus' confidence. Whatever she had planned, it was going to be tough. Twilight gulped and kept a straight face. After all the adventures she'd been through, she was ready for anything.

Rainbow nodded to her, then made her way towards the library door. "We'll see, egghead. You're never gonna see this one coming," Rainbow said with a snicker as she shut the door behind her, leaving Twilight to ponder what exactly her friend had in store for her tomorrow.

_____________________________________________________________________________

Twilight trotted through the streets of Ponyville, reviewing the plethora of spells she had familiarized herself with the night before for adventurous situations. She could disable a manticore in ten seconds, dispel any low-level spell with a single thought, and create any manner of magical barriers or bridges to help her through just about any situation. She walked into town square confident that she could take on any challenge that Rainbow Dash might have concocted.

Until she saw the crowd of stallions twitching and jerking in a circle outside of town hall.

Her heart rate increased at the sight. Twilight looked across the crowd nervously. She spotted the light blue plastic of a kiddy pool in front of their hooves. Twilight gulped. She didn't know what they were doing, but she had a few guesses.

Rainbow threw her hoof around Twilight's shoulder, making her jump. "Ah!" she screamed as Rainbow Dash settled in beside her with the same cocky grin. Twilight couldn't even bring herself to be mad; she still had her eyes locked on the crowd in front of her. "R-Rainbow Dash... What are they doing?"

"Oh them? They're jacking off into a kiddie pool," Rainbow said nonchalantly.

"What!?"

Rainbow Dash laughed at Twilight's shocked expression. "Heheh, what did it look like they were doing? I mean, if that doesn't look like a circle jerk, then I don't know what does."

"What--they--how... Is that even legal?!" Twilight asked, exasperated.

Rainbow Dash brought a hoof up to her chin in thought. "Hmm. Probably not. But come on, Twi; it's a Tuesday morning. There are going to be like three ponies passing through today tops."

"This is town square!" Twilight shouted. She looked around nervously. There were definitely more than three ponies giving the circle jerk in the middle of the road odd looks. "Rainbow what were you thinking?! What if there are foals watching?!" Twilight yelled at her friend.

Rainbow only continued to laugh at her. "Come on, Twilight, they're all at school. Besides, it sounds to me like you're giving up already," Rainbow said, nudging Twilight before walking towards the circle.

Twilight took a quick look around, then followed Rainbow. "I am not. I'm just questioning your sanity! What are you even planning on doing with this--" The stench of cum hit Twilight's nose, and she gagged mid-sentence.

"We are going to fuck in it," Rainbow said with a wide grin, not changing her cocky demeanor in the slightest.

A lump formed in Twilight's throat and a dark blush crossed her cheeks. "W-What?"

"You went to a university in Canterlot, how is this too much for you?" Rainbow asked, but then realized who she was talking to. "Right, you probably studied instead of having any male interaction, huh?"

"I-I did not! I can do this," Twilight said, more to reassure herself than anything.

Rainbow tapped one of the stallions on the flank, and they moved over to reveal the small plastic pool, just big enough to let two mares stand... or lay in. It already had a thin layer of stallion spunk coating the bottom, and every now and again one of them would cum and add to the sperm lake. Rainbow looked back at Twilight with that infuriating grin of hers, and took a step into the pool. "You sure, Twi? You can still back out and leave the adventuring to actually daring ponies like me."

"This is not--" Twilight let out a grunt of frustration and stomped her hooves. "How does this prove anything?!"

Rainbow slid her hoof around in the slimy seed in the pool, then brought her hoof up to watch it drip off. "I know you can handle actual adventuring, Twilight, but this is going to tell me if you've actually got the guts to do anything." Rainbow stepped into the pool, getting all four of her hooves wet with cum. She looked back to Twilight with that same cocky grin. "Now or never, egghead."

Every rational part of her screamed that she should just go home and let Rainbow have this stupid little victory. Another part of her hated seeing that cocky smile and condescending laugh every time she gave into something. Twilight wasn't about to let this one go. She'd prove Rainbow wrong at any cost. She took a step forward and gingerly dabbed at the viscous mixture with a fore hoof.

"Come on in..." Rainbow Dash said, grabbing Twilight around her neck, "the water's fine!"

Rainbow jerked Twilight off her hooves in one fluid motion, sending her backwards into the splooge pool. Twilight was immediately covered head-to-hoof in the off-white, sticky sperm as she slid through it, and shot up into a position a cat might take after it was just thrown into water.

"R-R-R-Rainbow!" Twilight yelled, shuddering at the thought of her new musky coat.

Rainbow brought a hoof to her mouth and chuckled. "Not too late to back out, Twilight. Though I do love your new look. It's got a nice shine to it," Rainbow said, unable to stifle her laughter.

Twilight took a stance and let out a frustrated growl at her friend. Rainbow didn't seem too worried, even if some of the guys who were milking themselves onto them gave each other a few worried glances. Rainbow spotted their worry, and tried to reassure them. "Don't worry, boys. You just keep filling this thing up. I'm sure Twilight'll give you quite the show," Rainbow said with a snicker.

Twilight felt a twinge of embarrassment at the realization that she knew most of these stallions. Just out of the corner of her eye she could see Caramel, Thunderlane, and Big Mac, all jerking their man meat onto her. Twilight felt even dirtier every time she felt one of them cum, and their seed landing on her. All of the frustration and aggravation inside of her was targeted at the mare in front of her. If these stallions wanted a show, Twilight was going to give them one.

"So, Twilight, when are you--"

Before that little blue muzzle could make another joke, Twilight grabbed Rainbow Dash and hoisted her over into the pool, making sure no part of her was left dry. Rainbow yelped as she was taken off her hooves, and an expression of shock was plastered across her face as her otherwise dry fur was coated with thick cum.

Rainbow's eye twitched as the feeling of the warm liquid seeped through her coat and brushed against her skin.

"Who's afraid of a little adventure now, Rainbow?" Twilight said, a victorious smile crossing her face at her friends dismay.

Rainbow, not one to be beaten, turned her head and took in a mouthful of cum, then shot back up to Twilight's lips and blew as much of it as she could into her mouth.

Twilight jumped back off of her, retching. She spit out as much of she could, but the taste lingered in her mouth, reminding her of the strength of the smell she still hadn't gotten used to. She heard a groan behind her, and one of the stallions spurted seed right into her mane and on her horn from behind, letting it dribble down her shoulders. Twilight shuddered at the feeling, and her knees almost felt like buckling as she looked around the jerking stallions. Rainbow could only laugh as she got back to her hooves.

"Get a good taste?" Rainbow asked. Twilight attempted to rub her tongue off with a hoof, but soon realized there weren't many places on her body that were still dry.

"This was a horrible idea... this can't be sanitary..." Twilight mumbled to herself, starting to look sick. For a moment, Twilight thought she might actually throw up. Rainbow took full advantage of the distraction.

"Too much for you, Twi? Here, let me take your mind off it."

"Wha--"

Before Twilight even knew it, Rainbow had her on her back again. Twilight was about to fight back, but the sudden introduction of Rainbow's hoof between her legs made her go stiff. Rainbow started to rub around, making Twilight relax into the pool as the flurry of feelings began to hit her.

Twilight let out a soft sigh as Rainbow continued. "There you go. Feel better now?" Rainbow asked, nuzzling Twilight's cheek. Twilight blushed and squirmed under Rainbow Dash. Her cum-soaked hoof rubbing across her folds made something in the back of her mind worry over the waves of pleasure coursing through her. She silently reminded herself to go over a couple of contraception spells.

Twilight grimaced as she felt herself grow wet under Rainbow's touch. She knew it wasn't part of the bet, but every time she looked up, she saw that stupid cocky grin again. Twilight wasn't just going to let Rainbow win like this. With a spark of magic, Twilight adopted her own confident smile, making Rainbow's falter.

Before she even knew what was happening, Rainbow slumped forward onto Twilight with half-lidded eyes and a quiet moan. Twilight smile grew even wider as she pumped the magically-formed dildo into Rainbow's entrance.

After a particularly hard thrust, Rainbow's wings shot open, sending a cyclone of cum across the stallions in the circle. Twilight couldn't help but giggle at the orchestra of disgusted grunts and gags. Surprisingly, none of them even stopped stroking themselves through it. An opportunity like this isn't something you pass up just because of a little backfire, Twilight thought.

Seeing her chance to come out on top, Twilight turned her body over and slammed Rainbow back into the pool. Rainbow was still trying to combat the feeling of a pulsating, magic cock inside of her as Twilight settled in on top. Cum began to soak in to every little hair and feather on her wings, leaving all of the dry parts under them soaked. With the roles reversed, Twilight let a sense of victory overcome her, just enough to catch her off-guard.

While Twilight was basking in her own little victory, she gave Rainbow a break as the dildo lightened its pace. Rainbow took the opening to lean back up and place her hoof between Twilight's legs, and resume the violent rubbing of her clit. Rainbow ducked under Twilight's arm to get her wings around her flanks and caress Twilight's folds with her soft feathers. Rainbow held Twilight close to her, ignoring that one of the stallions just headshotted her right between the eyes.

"Heheh, got you now, Twi," Rainbow said.

Twilight could only hang over her friend's shoulder as her legs gave out from the pleasure. Rainbow knew what she was doing. Her magic dildo began to dispel, leaving only the cum it dragged in to drip out of Rainbow.

Twilight could feel that brash, arrogant grin without even having to look over her shoulder. Rainbow might have the upper hoof now, but Twilight was determined not to let her win this time.

"Not if I have anything t-to say about it!" Twilight tried to say confidently, while suppressing the coos of pleasure trying to escape her lips. Her horn lit up with magic again, forming an even bigger dildo between Rainbow's legs.

Rainbow gasped as she saw the colossal cock position itself at her entrance. It was almost as big as her hoof. Rainbow stopped pleasuring Twilight for a moment once she got a good look at what was about to tear her up.

"I'll give you one chance, Rainbow. Admit I'm just as daring as Daring or I'll make sure you won't be walking straight for a week," Twilight said with a cocky tone, being able to regain her composure after Rainbow faltered.

Rainbow did her best not to seem intimidated, but every part of her told her to fly away before Twilight could stick her with the massive member. She tried to squirm backwards under Twilight, but she kept the tip against her wherever she went.

"N-no way, Twi. I'm not about to--Ah!"

Rainbow's eyes shot open as Twilight's horn flashed. Without warning, Twilight shoved half of the length inside of her, leaving Rainbow to yelp and whimper as she tried to get used to being filled with so much. Rainbow could hardly even think straight. She'd never been stretched or filled like that before, and the odd combination of severe discomfort and confusing ecstasy made her hoof and wings fall from Twilight's pussy.

Twilight stepped away from Rainbow, giving nothing to hold on to. Without any support, Rainbow fell back into the pool of cum and writhed as Twilight twisted the magical phallus around inside of her.

Twilight looked down at her new trophy. Rainbow had no chance now. "Give it up, Rainbow. I can do this all day," Twilight said, pushing the dildo just a little deeper inside of her, making Rainbow yelp.

The fastest flyer in Ponyville wasn't about to give in so easily. Rainbow had set this up, and she was determined to get what she wanted. She raised her head and looked at Twilight through her grimace. "Never," she said through gritted teeth.

Twilight rolled her eyes and sighed at her friend's persistence. "Fine, have it your way."

With another spark of magic, Twilight added more girth to the monster writhing inside Rainbow's loins. Through the transparent magic she could see her friends inner walls as they dripped with her excitement. Twilight had to admit a burning in her own folds began to grow at the sight. She bit her lip as she thrusted the monstrous member in and out of Rainbow.

Twilight's eyes were glued to the sight. Rainbow writhed and whimpered as Twilight pushed deeper and deeper into her. A few of the stallions above her came at the sound and image of Rainbow taking that massive dick. Twilight slowly fell to her haunches and let a hoof drift between her own legs, oblivious to how many eyes were actually watching her too.

Twilight smiled as her eyes rolled back into her head. She struggled to keep her focus, but she didn't mind. The pleasure of seeing Rainbow being controlled like that along with her hoof making circles in all the best ways was another level of satisfying for her.

Rainbow Dash was all but blinded by the feelings assaulting her. Looking down her body, she could see the bulge of Twilight's magic poking up in her belly. Every time it hit its apex inside of her, she could only let her head fall back and moan for all the stallions around her to hear. The loud squish that the magic dildo made every time it pulled out of her made Rainbow's blush deepen. She could feel herself getting close to her limit, and the pressure building inside her was just as monumental as the member fucking her.

Rainbow bit her lip hard and bucked her hips against Twilight's tool. All at once the pressure inside of her released and she arched her back into the cock. Seeing this, Twilight pushed it in as far as her magic would allow, adopting her friends cocky smile at the victory. Rainbow's wings shot out, spreading around cum as they went. She opened her mouth wide and let out a scream of ecstasy, oblivious to the load one of the stallions shot right into her mouth.

The light faded from Twilight's horn as the speed of her hoof increased. Twilight's mouth hung open as a moan began to escape her lips. Any rational part of her that was against the whole cum pool idea had left in the throes of pleasure coursing through her body. The sweet sound of Rainbow's after-orgasm sighs kept Twilight's hoof going between her legs. Until she realized how long she held that position, and that her captive had been released from her grasp.

Twilight opened her eyes to find Rainbow on her hooves in front of her, head lowered and ready to strike. Rainbow panted from exertion, and Twilight could see a few drops of sweat mix with the other liquids on her body. Despite the fact that her mane clung to her face in a sticky, white mess and she was dripping with cum, Twilight flinched. Rainbow seized the opportunity to pounce on Twilight and put her back into the pool, soaking her mane through as well.

"Thought you had me with that one, did you?" Rainbow smirked, looking down Twilight's stomach. "Let's see how well you hold up, Twi."

Before Twilight could react, Rainbow slipped between her legs and had her mouth against her folds. Her strong tongue went right to work; it probed everything it could along Twilight's slit, testing it for weaknesses. Rainbow found a rhythm between caressing her entrance and assaulting her clit.

Twilight tried to struggle out of Rainbow's grip, but her forelegs were wrapped around her thighs like a vice. She only succeeded in splashing cum around as her hooves frantically searched for support. Rainbow's tongue sapped every bit of her attention, making any attempt at magic useless.

Twilight couldn't help but lay back and let her enjoyment escape her lips. Her open mouth let a few spurts of seed in, while the rest dripped down her face. Some sick, perverted side of her swallowed, and made her groin burn even hotter, yearning for release.

Rainbow Dash was determined to give Twilight the orgasm of her life. Her tongue burned from exertion, but from the way Twilight was squirming at every flick of her tongue, Rainbow knew it would be well worth the effort. The flavor of Twilight's excitement filled Rainbow's taste buds more and more with every passing lick. Twilight had already warmed herself up. Big mistake.

Rainbow Dash redoubled her efforts, making Twilight scream out. Twilight gritted her teeth and arched her back. Unable to get away from Rainbow's tongue lashing, she bit her lip and attempted to keep some semblance of composure. She briefly opened her eyes and looked around at all the pleasured faces of the stallions she knew around Ponyville, jerking themselves to coat her in cum. The exhibitionism made Twilight's blush grow even deeper, and the fire in her folds burn even hotter.

In an instant, everything that Twilight was holding back burst from her. She could feel the muscles in her hips spasm with electrifying ecstasy and her throat turned sore from the yells of enjoyment she let out. Rainbow never stopped moving her tongue, making sure that Twilight could do nothing but focus on the feeling in its entirety.

When Twilight finally fell limp in Rainbow's grasp, she let go of her freshly fucked friend. A strand of more than just Twilight's fluids connected the two mares as Rainbow pulled away.

Twilight was out. Her orgasm had sapped the last bit of her energy. She sat face up in the pool of stallion seed, a hazed look on her face as the afterglow of her orgasm began to leave her.

Rainbow got back to her hooves and tried to wipe her mouth, only to get it even wetter. She dropped her hoof and just ignored the feeling instead.

"Alright boys, shows over. Get your last loads off on her while you can," Rainbow said, stepping out of the pool towards a bag that was laying on the outside of the circle jerk.

Rainbow pulled a towel out of the bag and began to dry herself off. She was still going to need a couple of showers to completely get the muck out of her mane, but she didn't want to fly home dripping over half of Ponyville.

The last of the stallions coated Twilight in one final spurt. The sight of the normally introverted librarian covered in ropes of cum from half of the town's male population made Rainbow giggle. Twilight never even bothered to wipe it off.

One by one, the stallions began to leave. They each thanked Rainbow for the opportunity, at a distance, until Rainbow stopped one of them.

"Thunderlane!" Rainbow shouted, stopping the timid stallion in his tracks. He turned his head almost as if he were in trouble. "Could you do me a favor?" Rainbow asked, sticking a hoof into her bag.

"Uh... S-Sure, Rainbow Dash. What is it?" he asked, rubbing the back of his neck and making sure no one was looking over at him.

Rainbow tossed a camera out of her bag towards Thunderlane. He fumbled with it until it finally settled into his hooves. "Take a few pictures of Twilight."

Thunderlane gave a nervous nod, and started snapping pictures of the cum-coated mare.

Rainbow put on her trademark cocky smirk. "Guess you won this one, Twi. You're just as daring as me."

Rainbow stood behind Thunderlane and chuckled at the pictures as they formed. "And we've got plenty of proof, don't we?"