“What's going on with me?” Rainbow Dash asked the hazy, distorted reflection of herself in the mirror, feeling a tingling surge creep from her pelvis, through her spine; it seemed to be tickling all the way up to her mind, and she couldn't help but wonder if this is how colts and stallions felt all the time: slaved to a rush of hormones.

Casting her mind back, Rainbow Dash realised that she'd been feeling this way – on and off – ever since a brief return to Ponyville when a break in the Wonderbolts' hectic touring schedule had allowed them some respite. Seeing everypony again after so long had stirred up mixed emotions in the pegasus; one old friend, in particular, seemed to be the source of her current discontent. Could it really have been seeing Fluttershy again had done this to her? Hadn't her crush on her one-time flight school pal dissipated over the the years? She'd thought so, but apparently not.

After an exhausting day out with Fluttershy and the others, Rainbow Dash's first inclination had been to hit the shower and hopefully burn off some of this simmering tension she was experiencing and spend a relaxing evening in bed with a Daring Do novel, but her body seemed to have other plans in store for her.

Maybe it was that ride on the train Twilight Sparkle had insisted upon? Those old, rusty carriages were prone to shuddering on the tracks and it was possible the vibrations from the defective seats were responsible for the stimulation that seemed centred on her abdomen.

Or maybe what you really want is Fluttershy squirming awkwardly underneath you? Rainbow Dash shook her head. Fluttershy would never want a one-night stand, and she couldn't bear the thought of taking advantage of her friend in that way either.

Maybe I'm just getting old and feeling the tick of my biological clock? A wry smirk crossed the pegasus' face as she placed a stack of towels next to the bathtub. Spending time with Scootaloo was a blast, but she still didn't feel ready for foals of her own just yet; that said, Rainbow Dash wasn't averse to getting plenty of practice at the thing you had to do to get foals.

With the water finally warm enough, Rainbow Dash stepped into the bathtub and let the spray play over her back and withers; her wings extended of their own accord, and a shiver thrilled through her as the sensitive appendages were teased and stroked by the cascade. Instead of relieving her tension, all it was doing was stoking her internal fires. Thoughts that she'd never had before began to form in Rainbow Dash's mind, such as the sudden realisation that the shower-head was detachable.

Hoping to stave off a journey to the burn unit should she screw this up, Rainbow Dash adjusted the temperature gauge of the shower until the water was lukewarm; despite herself, the combination of Fluttershy's image in her mind, the tickly pleasure coruscating through her wings and spine, and the interesting new thoughts she was thinking formed quite the erotic trigger.

A bonus: there was a nozzle on the shower-head which adjusted the flow of water; she modified it until it was a single, continuous pulse. The jet was forceful, but a quick test against her hoof proved to Rainbow Dash that it was not painful. Then again, it might be a different story when it was brought against the sensitive areas below…

The pegasus pointed the shower-head at her stomach and let the spray caress the sensitive nub of her belly button; squatting or lying down in the tub might've been a more practicable stance under the circumstances, but with her sensitive wings at full stretch there was the risk of accidentally injuring them in her excitement. She spread her three remaining legs until the hooves were wedged against the sides of the tub, and now she could stand without expending too much energy on the effort.

Swallowing a gulp of apprehension, still unsure as to whether or not her most sensitive bits would be singed by the water, Rainbow Dash brought the shower-head lower; as the spurting liquid splashed against her abdomen, she felt a slight quiver, an anticipatory shudder, thrill through her stomach. Like butterflies.

Butterflies.

Rainbow Dash's head swam with visions of Fluttershy's curvaceous flank with its pink-and-blue tattoos; amazing that she hadn't noticed just how lovely and perfect it was before, and she felt a spasm go through her hooves as she imagined gripping the soft flesh tightly.

Bracing herself for what might happen, Rainbow Dash brought the shower-head in front of her pussy; the stream came close to touching her clit, and she felt herself tense even more as her hoof tracked lower until it was … almost …

The sudden jolt of the water hitting her was amazing; all sense left Rainbow Dash in that moment, including her prurient desires for Fluttershy, as a feeling very much what she pictured happening to the sky when it was struck by a Sonic Rainboom coursed through her body. It was as if somepony was directing a focused beam of magic directly at her sensitive clit. Once she got acclimated, she was able to move the shower-head in a tiny concentric circle, arousing her even more as the flow massaged her lips.

Her knees were beginning to feel weak, and Rainbow Dash could no longer chalk up her trembling to just the sensations she was experiencing in the lower half of her body; it wasn't helped by the fact that her balance was skewed slightly by only having three hooves on the ground, and she rapidly came to the conclusion that she would have to sacrifice dignity for pleasure.

Despite her best efforts, Rainbow Dash could not tuck her wings away; they remained stubbornly erect, and with a sigh, she simply wedged them into the bathtub as best she could while she lay against the foot of the tub. It was more than a little ungainly, but professional pride was the last thing on the pegasus' mind as she brought her hindlegs up to rest on the empty spaces on either side of the faucet.

With the worry of falling over forgotten about, Rainbow Dash could focus her attention on what her body needed; the water, just the right temperature and just the right pressure, pressed against the soft nub of her clit in a manner she could never echo with her hooves. It wasn't too hard, it wasn't too soft, it was perfection.

Something was happening, but Rainbow Dash was too far gone to pay it much mind; an intense pressure was building up inside of her, as if a knot of tension had been building up within her abdomen for days and was screaming, yearning, to be released. The pegasus wasn't even sure if she was making any noises of her own, though she supposed she must be given the throbbing pang she felt deep inside.

I was wrong. That wasn't a Sonic Rainboom before, but this is it now!

Rainbow Dash's wings fluttered excitedly against the sides of the tub, making a sound not unlike that of a bird rustling up against the bars of its cage; she didn't care, however. If anything, having them constricted in this way was sending an interesting tremor through her back. It was similar to when they were bound by Applejack during the Running of the Leaves to stop her from cheating.

Only slightly aware of the tears forming in her eyes, Rainbow Dash shut her eyes tightly as her muscles seemingly clenched and unclenched of their own accord. Her legs quaked, the sensations building up far more rapidly than she could comfortably handle.

Amidst the steady stream of warm water playing over her clit, Rainbow Dash felt as if a series of small explosions were being detonated within her; the most intense of spasms racked her body, and a stream of hot liquid gushed out of her pussy as an Equestria-shattering cry tore out of her throat.

Not able to control her reaction, Rainbow Dash stamped her hooves on the wall until she was quite sure that she'd put a dent large enough to be seen through in the cloudy tiles. She'd seen the phrase hoof-curling written down somewhere – probably in one of those romance novels Twilight Sparkle kept in the library – but had never known the literal truth of it until now. Her lower abdominal muscles were tight with the strain, working to expel every drop of moisture from within.

Rainbow Dash sat up just long enough to turn the shower off, and she idly wondered how long she'd been in there for; since no one had come hammering at the door, it probably hadn't been long enough for her to have been reported missing. If only Fluttershy had dropped by, who knows what might've happened? Sadly, such things only happened in Twilight's trashy literature.

Her heart was racing at a thousand miles an hour, and her pussy throbbed glowingly. She took a deep breath, trying to marshal her ragged thoughts. Experimentally, she poked the tip of a hoof deep inside her folds, and when she removed it, she found a trace of clear, almost water-like, fluid hanging on it. Rubbing it between two of her hooves, she discovered that it was a lot more viscous. With a curious sniff, she brought it to her tongue and tasted it. Salty, with just a hint of tang.

She laid there for a moment, contemplating and relaxing, letting the tension melt away into the lukewarm water of the bathtub. Rainbow Dash had intended to gather up her energies and make her escape, but she soon found a delightful sense fullness returning to her vagina; a demanding, intense fullness that commanded her entire attention. Her body was craving stimulation, and she was too tired to refuse its insistent calls.

Opening her legs again, Rainbow Dash repeated what she had done before; the shower water had gone cold, which introduced some new, not altogether unpleasant, sensations as an icy chill ran up her spine, goosebumps prickling her flesh. Circling around her clit, she quickly felt the pressure building once more. The explosion of orgasmic release brought her relief, but it was short-lived. Her body demanded more of her.

Somehow, Rainbow Dash reasserted control; she tried to shunt the cravings to one side, knowing that there was only one way to properly sate them. For now, she would have to be content with her own hooves and whatever she could find around the house, but if matters continued in this vein, she would probably be forced to return to Ponyville and seek out Fluttershy, and … pay her back for making her suffer in this manner.

Author's Note

sbloom85: Four down, a few billion to go. Congratulations, palaikai!