Twilight's Gradual Descent Into Sluttiness

                    Twilight opened her eyes to the brightness of the mid-day sun pouring through her bedroom window. She blinked several times, trying to clear the remnants of sleep from her eyes, shifting to her other side as she did so. Instead of the comfort of her soft mattress, she felt the unyielding carpeted floor beneath her skin.

                    Her mouth felt like sandpaper. She opened and closed it several times, trying to force some kind of moisture, but only found herself resenting the feeling of her tongue lolling around like a piece of dry rubber. Her head spun slightly as she attempted to stand up, and she was forced back to the ground, blinking blearily into the sun.

                    “Ugh… why do I feel so terrible?” she asked herself, if for no reason other than to force the question into contemplation. The events of last night were a blur. She remembered, with a flush of red to her cheeks, the way she had spent the day time, half-way between research and self-pleasure. So what had she done that had made her feel so awful the day after?

                    As she attempted to right her posture again, Twilight’s hoof touched a patch of carpet that scrunched under her hoof. She looked around her feet as she shakily stood up, and noticed similar patches scattered among the books and scrambled papers, spots that looked as though they had been the victims of particularly large spills. “What…” she started, surveying the rest of the room, but losing the words as her eyes fell on the sleeping figure of Spike only feet away.

                    The memories flashed across her mind all at once, almost enough to send her reeling back to the floor. Weakly, as if still waking from the dream, Twilight tentatively touched one of her hooves to her hind leg, and drew it back suddenly as she felt the dried crunchy remnants of the evening’s activities. She looked down to see her stomach painted in a crunchy clear code, an off-shade of white.

                    Her mind raced to recall the extent of what had happened. She’d spent the whole day… and then when Spike had gotten home…

                    Perhaps because an evening of rigorous intercourse had at last cleared her head properly, for the first time in over a day, the consequences of Twilight’s rapid change in personality seemed to finally make an impact. She fell to the floor, resting on her hind legs and sitting upright, staring wide-eyed into nothing. Her mouth searched for words, but nothing came.

This is bad, very bad, the spell is working too well. I didn’t think it would be a constant change like this, I just wanted one quick adjustment and then no more, this is bad, really bad… I fu- slept with Spike…Twilight made a conscious effort to avoid the use of the vulgar vocabulary she had begun to assimilate over the past few days, already struggling with herself internally. I need to fix this, I need to do something, this is only going to keep getting worse. I don’t want this, I don’t want to spend every minute of the day wet and aching for some hard stallion to- No!

Twilight shook her head in attempt to clear the constant naggings of her subconscious, already sending the first waves of heat flowing along her body. Her eyes landed on Spike again, snoring as though he would never wake for a thousand years. Her mind flashed back to last night – no doubt Spike would be spent for a while yet. Though, if she woke him up the right way, she might be able to get another round or two-

No! Twilight screamed at herself, shaking her head again with extra force. I need to get to work. If everything up to this point is consistent, the more I think about… that… the worse I get at thinking about other things. I need to take this time to work, and figure out what in Equestria went wrong when I made that spell.

                    Knowing that even a glass of ice cold water delivered by a marching band wouldn’t have woken Spike, Twilight didn’t hesitate before levitating the sleeping dragon off her floor and floating him out the door to her bedroom. As she lead him down the stairway and into one of the living room chairs where he fell soundly, still snoring, Twilight finally realized one of the reasons Spike had been so insistent on his own bedroom. She made a vow to herself that if she managed to avoid her brain turning into a pile of sex-obsessed mush, she’d make sure to be more considerate of the young dragon’s feelings, especially if the mere smell of Twilight was enough to get him ready to go.

                    Now being assured some privacy, Twilight closed the door to her room with a flash, and for the first time in days, made an effort to collect the piles of scattered papers around her room. She knew she could lose her whole day organizing, so she selected only choice pieces, the ones she recognized from her first bout of research that had lead to her redesigning of the spell.

The initial rewiring incantation had consistent results, it didn’t mention anything about multiple onsets of different brain chemistry. I must have gotten something wrong in the calculations, or my re-casting may have screwed the whole thing up.

                    Twilight swept a mass of old notes onto the floor beside her desk and laid the research papers she had collected onto the wood. All I need to do is analyze the original case-study some more, and figure out where my spell differs from the original. Then, I just make a correction, use it to reverse the current spell, and it should- Twilight’s eyes forced themselves into a hard blink, and the instant her eyes closed, her mind filled with images. Jumbled scenes jumped through her thoughts: the night with Spike, herself, bent over the bed and presenting to an invisible suitor, Lucky pressing her down and taking her with his-

Ugh! Twilight shook her head furiously. Need to concentrate. This is important. It’s im- impera- really important that I figure this out she reminded herself. What word had she been searching for? Impish? Impressive? Like the length of Lucky’s no doubt impressive-

                    Twilight slammed one of her hooves onto the desk, and the jolt of pain from her foot colliding with the sturdy wood sent a flash of clarity through her mind, jarring her vulgar thoughts away for at least a moment. She would will herself into concentration no matter what the cost. Though, there was a very important first step she’d neglected. Turning without delay, Twilight levitated her bound journal and inkwell over to her desk, flipping the book open to its last dated page.

June 27th,

The spell is taking very sig- sign – big control over the rest of my thoughts. Very important that I study and reverse it. Will spend day thinking on how to fix.  No more time for writing.

Garg – Sens – Ravis – Im..perative; Very important.

                    Twilight closed the journal with a snap. She closed her eyes for a moment, and in doing so, noticed the very present warmth washing through her body. Nervously, she dipped one of her hooves downward, touching herself very tentatively.

                    “Ah!” Her body shuddered in instant response to her touch, but she drew her hoof away, soaking. Gritting her teeth, she turned her attention back to the papers in front of her, though her hind legs were already grinding together.

                    The rest of the day was a struggle.

                    The sun faded from the sky sooner than Twilight had anticipated. She had failed to check the time when she had awoken, but now guessed it to be around mid-evening. That meant it would be proper night soon, and she had made very little progress. It was hard to concentrate when every errant touch of an object of material sent shivers up her spine accompanied by provocative images flashing across her mind’s eye. Still, she had notes, and a basic foundation for what she hoped would at least prove an effective stop-gap. That would give her more time to work, and form there she could-

                    Twilight’s thoughts were jarred by a noise from outside her window. She’d opened it after an hour or two, finding the heat of her own body, as well as the smell of the room after the last evening’s activities to be almost unbearable. The breeze wafting in had cooled her down, and made the smell of her own sex less present, helping her keep her mind relatively focused.

                    Again. She heard the giggle trailing through the air up to her window. She remembered what that sound meant.

                    She had watched them two nights ago. Fucking. Her legs seized together. No. She had to keep working. Important.

                    Another giggle. She needed to see them. The pegasus riding that stallion’s big juicy cock-

                    No.

                    But-

                    Twilight clenched her eyes shut tight, struggling with the two sides of her mind colliding furiously. Want. She wanted it so badly. But she couldn’t. If she let herself watch, she knew she’d-

                    She had to get them away. To go out and tell them off. Running before her brain gave her more time to think, Twilight dashed down the stairs and out the front door of the library, running around the house as fast as she could, hoping to catch the couple before they had started their nightly affair. Then she could continue working in relative peace. She felt confident as she rounded the corner to the relatively secluded patch of grass sheltered in the shade of the sizable library.

                    Her eyes locked onto the purple-haired pegasus’s mouth as she moved it up and down, slathering the length of the boy’s cock, the spit shining in the moonlight.

                    “No,” Twilight whispered to herself, feeling the heat rising from between her legs and coursing along her entire body. She pressed her hooves together and reached them low, clenching her hind legs and shutting her eyes. “No no no no no no no, can’t, can’t watch...”

                    The couple was oblivious to her dilemma, with the girl in particular very engaged in her activity. The stallion seemed to be enjoying himself, groaning quietly into the night as the pegasus worked her mouth up and down his shaft, letting out the occasional moan of pleasure as she gulped his length down repeatedly.

                    Twilight opened her eyes and saw the stallion’s cock standing straight up, glowing with the light from the stars as the girl raised her mouth to the head, and then vanishing as she went down with a soft slurping sound each time.

                    Want. She wanted to be that girl. She wanted that cock in her mouth, the whole thing for her to suck on and lick and tease, and ride and be pounded by.

                    “Nonononono, please… hnnn…” Twilight fought with herself from feet away. Evidently the last of her groans was enough to draw the attention of the couple, and the girl paused with the tip of her partner’s cock in her mouth, tilting her head to the side before pulling herself off with a pop. “Blues? Did you hear something?”

                    Blues opened his eyes as if suddenly realizing he was awake and having his dick sucked in a still technically public place. “Huh? No, I didn’t hear anything.” He gestured imploringly at his now exposed member, twitching at the height of its stiffness and swaying ever so slightly, spit trickling down to the base of his shaft. The pegasus gave another cursory glance around, but was unable to see Twilight struggling with her hoof between her legs only feet away, and so returned to her blowjob without protest.

                    Twilight couldn’t stand it anymore. She needed that cock inside her. However, wherever, she didn’t care, she couldn’t think about anything other than that delicious rod plunging into her mouth, or pounding her from behind.

                    The speed of her approach gave the couple little time to react, and it was fast enough to let Twilight lift Showers from her fellatio and throw her a foot away with a burst of magic. Twilight knelt to replace her instantly, taking Blues’s length in one gulp, bottoming his head against the back of her throat. The colt was much bigger than Spike, but Twilight’s actions were blinded by desire, and the second the giant cock-head touched inside her Twilight moaned, sending a shiver up Blues’s spine. He was oblivious to the switch, but Showers was quick to pick herself up and protest.

                    “Hey, what the heck?” The pegasus turned her attention back to her boyfriend, only to find Twilight contently swallowing his penis again and again, moaning to herself the whole while. “Oh my gosh, get off him!” The protest was the best she could muster, given the circumstance.

                    It was also enough to get Blues to open his eyes, upon which a quick glance downward revealed that the pony slathering their mouth on his dick was not his pegasus girlfriend. He shouted and pulled his body back by impulse only, though a section of his brain screamed at him for depriving it of the overeager pleasure of Twilight’s fellatio. The absurdity of a random pony sucking his cock took him a moment to process, but eventually he managed to form some approximation of a protest.

                    “What do you think you’re doing?” he said, Drawing himself upright and finding Showers at his side, wrapping her legs around his body as he stood on two legs. Twilight looked up at the pair, and the glimmer of the moon caught her eyes, bright violent shimmering in the dark and making her look like a mare possessed.

                    “Please, let me… I need it…” Twilight lunged towards Blues with her mouth open, like a foal in search of a bottle, but the colt stepped back just in time to avoid Twilight’s assault on his still enlarged member, which swung absurdly in the moonlight as he avoided her.

                    “You crazy bitch! You can’t just shove me off my boyfriend and start sucking him off like that! I’m gonna go get the Ponyville police, and they’ll-“

                    “Please, I need it, so bad! I’ll do whatever you want, I’ll get both of you off, but please, I need someone to fuck me!” Twilight interrupted, turning from her fallen position at the pair’s feet and presenting herself, spreading her hind legs wide and displaying her dripping plot for all to see. Showers recoiled again, but she found her movement halted by Blues stationary frame, her hooves still wrapped around his body.

                    “Blues! Come on, let’s leave this crazy slut-“

                    “I won’t tell anyone I’ve seen you two out here!” Twilight yelled, turning her head to face the couple as she stood still bent over. “I know you’re out here every night with each other, and neither of you would want anypony to find out. I’ll keep it a secret if you’ll help me, please…”

                    The couple shared a glance. Did she really know about their almost nightly romps in relatively plain-sight? If the town found out, they’d be ridiculed, maybe even excommunicated. The two spoke a volume of contemplation in their locked eyes, neither of them knowing what to say to the absurdity of the situation. Showers turned her head first, her mouth opening to speak, but found herself cut short as Twilight bowled her over, pushing her body to the ground. Before she could shout in protest, she found her lips locked with Twilight’s, the heat of the unicorn’s body coursing through the joining and sending a shiver up her spine. Twilight’s arousal seemed almost contagious, and the absolute depravity of Twilight’s slobbery open-mouthed kiss was enough to keep her disarmed for a moment. When the kiss finally broke, Showers found herself panting, a strand of saliva hanging between her mouth and Twilight’s. Twilight stretched the strand out as she moved her body lower, lapping experimentally at Shower’s exposed slit, which prompted another shiver from the mare, along with the quietest moan. Twilight licked several times along the pegasus’s wet opening, sliding her tongue through the slick folds and up over her clit with each lap, every touch of the pleasure button drawing another squeak. She paused for a moment, replacing her mouth with the touch of one of her hooves, which she pressed on Showers’s clit in circles, eliciting a long series of drawn out moans.

                    “Please… I can’t take it anymore. I’ll make you cum as much as you want, just fuck me, now, please,” Twilight begged, turning her face back to Blue and pleading to him with her violet eyes wide.

                    Blues was stunned. The request sunk into his mind as Twilight resumed her attention of his girlfriend’s sopping wetness, licking up and down in long eager strokes. As Twilight licked, she repositioned her body, propping her hindquarters up and spreading her legs again. Even in the dark, Blues could see the liquid dripping from Twilight’s pussy onto the grass, each trickle of moisture illuminated by the silvery sky overhead. Twilight shifted her eyes back to the colt as she buried her face in Showers’s cunt, and shook her hips suggestively, imploring him as she ravaged the still moaning mare underneath her tongue.

                    Blues quickly felt what was left of his resistance crumble. He was only a pony, after all. That, and he had never been this turned on in his life. Seeing his girlfriend pinned to the ground and sucked and slurped on by the sluttiest unicorn he’d ever laid eyes on was enough to get him harder than a rock, and Twilight’s soaking hole waving at him from inches away wasn’t helping. The smell of her arousal hit him as he walked closer, and if it was possible, he felt like his erection might have burst. He wasted no time lining himself up, and with little fanfare, buried himself into Twilight’s waiting pussy in one thrust.

                    “Mmmmmnnnnnh!” The feeling made Twilight’s mind reel. She cried out continuously, her face still buried in the delicious taste of Shower’s dripping folds. Instead of licking, Twilight locked her mouth on Showers’s clit, and let the force of her moan vibrate her tongue and jaw on the tiny nub as Blues drew back, and then pushed into her again. The colt groaned as his dick slipped inside again, the whole of his cock consumed by a heat and wetness like nothing he’d ever felt. He pulled out again, slowly, just leaving the tip of his head inside before thrusting back in, letting another long groan out into the night as Twilight accompanied him. Tight, too. Every time he thrust, Twilight’s pussy clenched around his dick, squeezing him so hard he felt like he might not make it all the way in. Twilight resumed the attention of her tongue as the colt pounded into her, her hips arching back to meet his thrust each time.

                    “So… good…” she murmured between licks. Spike had been amazing, but this was something like she’d never imagined. Blues was so big, so thick – she felt like she could take his cock forever and never go unsatisfied. She wanted the stallion to bury himself in her so she could feel every inch of his swollen length inside her, and then slowly pull himself out so she could feel her pussy stretch on his exit, twitching with anticipation before he drove back in again. She said nothing about what she wanted though, her mouth to concerned with her constant attention to Showers, and her body in complete ecstasy besides.

                    “Harder, please,” she managed to moan before burying her face again. Blues was grunting with every thrust. The sight of his girlfriend spread eagle in front of him, moaning as Twilight lapped at her clit was almost enough to make him cum just from watching – adding Twilight’s amazing tightness and eager hip-thrusts against his own had him on the edge already.

                    Twilight felt like she might die. The thoughts of the whole day prior were gone from her mind, replaced by only one desire, to have Blues behind her, fucking her for the rest of the night, for the rest of her life. She didn’t even put a name to the cock inside her, but her body didn’t care. Every inch of her skin was on fire; her legs were struggling to keep her backside elevated. Every thrust threatened to send her into a collapse of pleasure, to make her body explode in a mix of fireworks and complete, mind-emptying ecstasy. How could she have thought anything else? This was all she wanted, to be fucked, and filled up, completely and fully. It was the best feeling, the best feeling in the world, nothing could ever compare, she could die this way and be at peace…

                    Twilight’s attention to Showers’s clit was beginning to take its eventual toll, and the enraptured pegasus began to clench the muscles in her hind legs, arching her back with each attentive lick of Twilight’s tongue. Her moans started to become longer and higher in pitch, until she would have been sure the surrounding houses would hear, if she’d had any mind to consider them.

                    “Ahhh… ahhh… c-c-cu-mming!” she screamed, locking her hind legs around Twilight’s head. The sound of his girlfriend coming to another pony’s tongue in front of him was enough to send Blues over the edge as well, and he grunted hard as he slammed into Twilight’s hindquarters with several last powerful thrusts before pulling out and spraying his load all over her back. The force of his explosion was so strong that several spurts manage to land on Showers’s face, which she lapped at hungrily in the throes of her orgasm, body shaking and grinding up into Twilight’s mouth as she came. The feeling of the hot load covering her back sent Twilight’s arousal into overdrive, and though she had felt the sensation of a near constant climax since the instant Blues’s cock had entered her, she came with finality now, spraying all over the grass underneath her.

                    Twilight moaned as she collapsed into the grass, covered in Blues’s cum, and her face soaked with juices from the pussy she had eagerly devoured for the duration of the encounter. Her mind was fireworks, still jittering with electricity and partial explosions. Bliss. The world was an eruption of pleasure, consuming her whole body, emptying every one of her senses and fading her consciousness into black along with the rest of the world, every speck of light in the sky vanishing into darkness, the moon disappearing from her eyes as they fell shut.

                    Blues stood behind the collapsed unicorn, panting furiously, his cock still pointing straight, twitching as the last few drops of cum ran down his head and onto the ground. The air around his mouth fogged into steam with the heat of his breath. Showers was the same, gasping for breath as the strength of her orgasm receded. She propped herself up on her forelegs for a moment before righting her posture properly, standing to four legs and giving Twilight’s collapsed form an experimental look.

                    Blues cast his gaze downward, concerned.

                    “Do you think she’s okay? Should we-“

                    “Let’s just go… I’m sure she’ll be fine.”

                    “Did that really just happen?”

                    Showers took a slow deep breath, closing her eyes in an attempt to analyze what had just happened. In the end, she defaulted to her original suggestion.

                    “Come on. Let’s go, okay?”

                    The two began their journey back home hesitantly, leaving Twilight’s collapsed form covered in semen and her own juices lying in the bed of grass outside her house.

                    “If you ever tell anyone about this, I will make you regret it,” Showers whispered as the pair began their walk proper. Blues simply swallowed nervously, and nodded.