Good Girl Rainbow

Rainbow awoke and stretched her wings, wide. The action was a mistake, as soon as she stretched her wings pain shot from her back. The newfound star tattoo—barely a day old—made itself known to her all over again.

The mare immediately relaxed her wings and looked around, her eyes blinking rapidly as she took in her surroundings. She was in a round, soft quilted fleece mat laying on the floor. Not uncomfortable, the lining was as soft as a cloud, her blanket more comfortable than any she had owned in her life, and it was enlarged to fit her size, but even with all the accommodations, there was no doubt to what it was.

It was a dog bed.

That realization brought others. Her ears were still sore from the piercings, her back from the tattoo, and her reputation was shot with everyone who’d seen her. And, now that she was up, her body ached as well, especially her nethers.

“Damn Twi, you really did a number last night,” Rainbow said as she looked up on the bed.

Her normal spot—for the last two days anyway—was on that bed. But last night, after some fun, Twilight had kicked her off. Literally kicked her off. Not in a way that hurt, but in a way that was definitely demeaning. The princess, her ‘master’, had accused her new pet of smelling and kicked her off the bed.

Given, after their activities, both mares smelled, but the details weren’t the important thing, it was the actions, it was the master putting her pet in its place that mattered.

Rainbow gulped as she remembered last night. An action that reminded her of the spiked collar she now wore around her neck. It was tight, tighter than she thought it should be, but her ‘master’ had absolutely assured her—after triple checking a few times with her magic—that it would cause no danger to her breathing or run the risk of harm. Twilight had said that she’d magically enchanted it to come off the moment Rainbow’s O2 level dropped below acceptable levels.

Even playing a dom, you can’t help but be an egghead can you, Sparklebutt? Rainbow thought as she quietly chuckled and jumped up on Twilight’s bed. Her thoughts were reinforced by the fresh new books Twilight had next to her bed. Books Twilight wouldn’t be caught red-hoofed with on a normal day, books that Rainbow suspected she had Cadance to thank for. Among them were such titles as: How to be a Dom, How to care for your new ‘Pet’, Playtime and Punishments, The Pleasure of Humiliation, and the last one which made Rainbow blush, Preening your new Pet Pegasus.

Looking at those titles, Rainbow felt her already matted fur dampen again. There was no greater evidence that Twilight was taking her new role seriously. A portion of Rainbow, a rather large portion told her to end this, but in spite of that, in spite of the humiliation and treatment, she was enjoying herself, more-so than she’d ever expected.

It was just a bet, it was just her following along with her end of the deal, a deal she had been the one to insist on. Or at least that was what she told herself. But the way she felt couldn’t be written off that easily. It’d only been two days, and yet… yet.

Rainbow shook that thought off as she admired her new ‘master’. Twilight was sleeping peacefully in her bed, her hair matted against the side of her head. Her muzzle skewed in a smile.

Her eyes rested on Twilight’s own changes. As Rainbow had Twilight’s cutie mark tattooed on her back, Twilight had Rainbow’s tattooed on her chest. The princess even had her fair share of piercings on her ears. Just like Rainbow now had. She also wore a collar, just like Rainbow’s.

We went too far, didn’t we? Still… Damn you look hot like this.

Rainbow couldn’t lie, not to herself. This change, this persona, seeing the princess play the bad girl, it was rather hot. It was that change, that commitment that made Rainbow’s own that much easier; Twilight being contrary to her very nature made Rainbow being contrary to her own that much easier.

And the fact that the last two days were—bar none—the best sex in her life didn’t hurt things either.

Rainbow’s eyes glanced from the sleeping mare to the clock. She saw that it was time for her ‘master’ to awaken. That was one of her new duties; to make sure her master woke on time. Rainbow sighed, a little too loudly. A bet’s a bet…, she thought as she moved in tonuzzle Twilight’s chest.

Only to immediately pull back as the smell hit her. Damn Twi, if I smell half as bad as that it’s no wonder that you kicked me out of bed last night. She shook it off, readied herself against the smell, and went back in.

Twilight’s fur was just as matted as she’d expected. The feel of sweat and other juices permeated every follicle of hair. Rainbow ignored it and pressed her muzzle into Twilight’s chest. She was rewarded for her efforts.

Warmth greeted her. The warmth of a perfectly content, satisfied, and sleeping mare. Rainbow pressed deeper into her mare friend’s fur, the thump-thump of Twilight’s heartbeat greeting her as she did so. When the mare didn’t awaken, Rainbow kept her eyes shut and pushed harder while letting her muzzle slide along Twilight’s barrel.

There was no getting past the smell, but the warmth more than made up for it. When Twilight didn’t awaken, she kept going, expecting to end the session by finding the mare’s muzzle. What she found instead surprised her.

Somehow, she’d traveled down Twilight's body instead of up. Rainbow only realized it when her muzzle encountered one of Twilight’s nipples. Maybe it was out of instinct, maybe due to the absurdity of the situation, but Rainbow’s next actions surprised even her. She latched her lips around the nipple and begin suckling like a newborn foal.

The action was soothing in a way that surprised Rainbow. She fell into it, forgetting about waking her ‘master’, forgetting about the last two days. It was as if nothing else mattered, as if all that existed was the bed she was on and the nipple in her mouth. Her body relaxed, her eyes closed, and she gave in, letting the action be her everything.

That is until she felt a hoof brush through her mane. “I didn’t know you liked this, Rainbow.”

Rainbow jumped up in horror at the sound of her master’s voice. “Twi, I… um… I—”

Twilight’s smile fell to a frown as she detangled her hoof from Rainbow’s mane. “Ugh, remind me to get you a haircut today. And relax, I’m not mad. It felt pretty good on my end, although you do need to watch your teeth next time. If you like that we can do it more.”

“I didn’t say I liked it! I just… umm…”

“Relax Rainbow. It makes sense, it’s our natural instincts to suckle on teats for sustenance when we’re young. All mammals have that impulse. And while we do grow out of it, it’s logical that those instincts would remain.” At those words Twilight levitated over a parchment and quill, “Tell me how it felt? What caused you to feel like nursing?” She asked, her quill already scratching away.

“No,” Rainbow stated with all the force she could muster.

“Ahh, come on,” Twilight said with a slight pout to her voice. “It’s for science!”

“No,” Rainbow replied again as she jumped off the bed with more force than was necessary.

Twilight huffed as she felt her bed lurch slightly to the side. “You’re no fun,” she replied as she crossed her hooves on her chest. Her nose wrinkled slightly as she caught whiff of the smell. “Ugh, I need a shower.”

“You and me both,” Rainbow replied, smelling herself and recoiling as she headed to the showers.

Twilight went to climb out of bed when her eyes caught sight of the book How to care for your new ‘Pet’. She smiled as she got to her hooves. “Sorry Rainbow, pets don’t take showers.”

“You can’t be serious,” Rainbow replied as she paused and looked back.

“Very,” Twilight replied matter of factly, “Pets don’t take showers,” she repeated as she walked past Rainbow. The mare smiled as she looked back and said, “They get bathed by their masters.”

“You… want to… wash me?” Rainbow stuttered.

“It’s a master’s duty, isn’t it?” Twilight replied. “I mean, that’s what the book said. Chapter two if I remember correctly. It dealt with the proper bathing and care of your new ‘pets’ and I—”

Rainbow cut her off with a facehoof. “Twilight, I will never know how you go from sexy dominatrix to nerdy egghead at the drop of a hoof.”

“So you think I’m sexy?” Twilight asked, her face a mixture of playfulness and shock.

“Don’t make me take it back,” Rainbow replied.

“Oh just wait for me in the tub, I’m going to go take a shower. I’ll bathe my pet afterwards.”

“Wait, you don’t want me to join you in the shower?”

“And miss the chance to clean you myself, no thank you. Now be a good pet and jump in the tub,” Twilight replied as she walked past Rainbow and into the bathroom. Rainbow sighed and followed, apprehension and anticipation plaguing her steps in equal measure.

Rainbow turned left and jumped into the tub. Her last sighting of Twilight was seeing the mare’s flank as she disappeared behind the shower curtain. She smiled slightly when she heard the showerhead turn on, but it was a smile that was short lived as the seconds ticked over to minutes.

Ugh, why is she taking so long in the shower… Wait, does she take Rarity level showers? Am I going to be waiting in here for a hour‽ Two‽ No, Twilight’s not like that. Still, I’d have been in and out in ten seconds. This is ridiculous.

As boredom kicked in Rainbow started to debate about simply turning on the bath water and bathing herself. She wrote that idea off, partly because Twilight would be mad at her and partly because she didn’t want to direct the hot water flow away from Twilight. Doing so would be hilarious, but it’d also seriously tick off Twilight. Although she had to admit that the option was getting more and more tempting as time went on.

Nah, I don’t want to make Twilight mad. Wait, why I am so worried about that? Why am I agreeing to this? A bet’s a bet, but still… Even I know we took it too far. Those piercings, the tattoos… Celestia is going to have my flank when she sees, never mind the others.

Rainbow’s thoughts came to an abrupt halt when she heard the shower head turn off. Her ears perked up and eyes shot straight to the curtain. She couldn’t help but notice that her tail started to move on its own. The realization dawned on Rainbow; her own body was betraying her. Why do I love this so much‽

“Who was a good girl and waited for her master?” Twilight asked as she came out of the shower and wrapped a towel around her mane. “Yes you were, yes you were.” Twilight used her magic to start rubbing the side of Rainbow’s head.

Rainbow couldn’t help but lean into it. She found herself enjoying the praise and the attention in much the same way as a dog might. For about two seconds anyway.

“Too much, Twi. Too much,” Rainbow said as she regained her composure and pulled away.

Twilight’s manner quickly changed. “Oh, I’m sorry Rainbow, I didn’t mean to push it so far so fast. It’s just that you’re responding so well, just like the books said you might!”

Rainbow’s ears fell flat at that. “What do you mean books said I’d act a certain way‽”

“Well, according to the book your personality is close to an ESTP, meaning that you’re incredibly dedicated, strong-willed, direct, and loyal. You take on challenges because you love to be rewarded, and you’ll respond quite favorably to constant positive feedback, especially if it came at no effort other than incremental behavioral changes.”

“You… you got all that from a book?”

“Yep! Honestly even though it’s a sex book I wish I’d read it earlier. It makes so much sense! All I’ve been doing is rewarding you with constant praise and attention for doing next to nothing. Your personality type would accept that reward and continue on the path I want you to be on, just so you’d get more of the attention you want.”

“And I’ve been going along with this?”

“To be honest you’ve done most of it yourself. I find myself having to skip chapters just to keep up with your development. I’m quite shocked with just how well you’ve done.”

Rainbow’s muzzle opened and shut several times. She was so flabbergasted at what Twilight had just told her that she didn’t even notice when the water came on. “That’s… that’s really messed up, Twi.”

“Messed up?” Twilight asked.

“You’re manipulating me!”

Twilight dropped the soap she had just picked up. “Yes, but isn’t that what you want me to do?”

“Want? Why would I want that‽”

“You agreed to be my pet, Rainbow. That means I’m your master. If I’m playing the role of the master doesn’t that mean I need to treat you well? That it’s my job to make sure my pet is behaving properly? Don’t you want me to be the best master I can be so I can make you the best pet you can be?”

“Well, I… wait… I mean, I…”

“We can stop whenever you want, bet or no bet,” Twilight replied as she fished the soap out of the bath and started scrubbing Rainbow right under her left wing, right in the sweet spot that almost caused her to melt into the bathwater.

“I don’t welch on my bets,” Rainbow said with a little more force than intended as she leaned into Twilight’s touch.

Twilight noticed the dichotomy between Rainbow’s actions and words. She was definitely enjoying herself, her body language said that much, but Rainbow was mentally justifying it with the bet. “We can stop whenever you want. Unless you have the… perseverance to keep going?”

“Never use that word again,” Rainbow purr-growled.

Twilight laughed at that. “No but seriously, if we do something you’re not okay with…”

“Trust me, I’ll let you know.”

“But I will keep pushing your limits, Rainbow.”

“As a good master should,” Rainbow replied in a deadpan tone as she adjusted her position, letting Twilight’s hoof reach her sides and flank. “So you’ve said at least a dozen times these last two da—”

Rainbow’s words were cut off as soon as Twilight's hoof found her nethers. She let loose a deep breath, enjoying the stimulation. “Is this… is this part of the ‘reward’ for me being good?” Rainbow asked.

“Of course, not that you’d have to be a good pet to get this reward,” Twilight whispered in Rainbow’s ear.

Stupid sexy Twilight. Rainbow thought as she lost herself in the feeling of that hoof. She felt Twilight’s fur brush against her slit, move up and down her clit, lightly pressing—teasing the entrance to her marehood. The hoof moved slightly faster every second, which combined with the water, the heat, caused her normal feelings of tension and the ‘itch’ to come far faster and arrive greater than she’d ever experienced before when playing with herself.

As the seconds ticked by, Rainbow lost herself to the hoof, to the feelings growing within. She lost the fight she’d been having with herself and one of her cyan hooves started assisting Twilight’s, rubbing her clit viciously.

Twilight slapped it away, “uh no, Rainbow. That’s the master’s job.”

At that Rainbow huffed and looked away, but noticeably, put her hoof back down while moving her flank and tail slightly to provide Twilight better access. Twilight smiled at that and started over, finding Rainbow’s marehood practically soaking, and not from the water.

She powered her horn and started working Rainbow from several angles. She teased her flanks, her thighs, her chest, and her wing base, all the while working her marehood with a hoof. Under the combination assault it was seconds until Rainbow was once again lost to the pleasure. “I think it’s time we do something about that mane as well.”

“Mhmm…” Rainbow mumbled, only partly paying attention.

“That’s a yes?”

“Yes,” Rainbow moaned.

Twilight smiled and floated over a pair of scissors.

When the moment came Rainbow all but collapsed into the water. She felt it like a wave of pleasure washing over her from her flank to her muzzle. Every iota of her being felt good, exhausted, but good. Twilight helped her out of the water and levitated over a towel to wrap dry her off.

Rainbow smiled at her and took over the duty for herself. “I hope you like it, Rainbow,” Twilight said, smiling.

“I loved it,” Rainbow replied. “Are those the types of bathings I can always expect? If so this is the greatest bet I’ve ever lost.”

“Of course, but I meant your mane-cut.”

“Mane-cut?” Rainbow asked, unsure. Unsure until she reached up to the top of her head. “Wait…” Twilight levitated over a mirror for the mare to use. Rainbow snatched it and examined her new mane.

Her normal long hair was gone. In the front it no longer dripped over her eyes, stopping just over her brow. In the back it was trimmed all the way down to the bottom of her head. “Waahhhtttt….”

“I hope you liked it. This cut should be far more efficient for both flying and cleaning. Plus I think it looks adorable on my new pet.” Twilight’s expression was the same she had when a new experiment worked exactly as she had planned.

“Why did you? I… Better at flying?” Rainbow asked.

“Oh yes, the reduction of air resistance and wind drag should produce a noticeable increase in your speed.”

Rainbow's mouth opened and closed several times as her eyes took in exactly what her new ‘do’ would look like while flying.

“Plus I think you look really cute like that,” Twilight replied.

Rainbow gave her a death glare, but didn’t say anything. Well, it’s not worse than the tattoo and piercings. And it makes Twilight happy, so...

Twilight all but clapped in cheer when Rainbow put the mirror down with a look of acceptance on her face. “I’m so happy you liked it, let’s go get something to eat!”

“Sound good,” Rainbow replied, then thought of something. “Umm… Spike’s still at Rarity’s, right?”

“Oh no, he’s due back this morning. He should be downstairs making breakfast.”

Rainbow stopped in her tracks. “Wait, he’s… here?”

“Of course Dash, he wasn’t going to be gone forever. Wait, did you think our friends would never see us again or something?” Twilight asked as she powered her horn to levitate something else over.

As that realization dawned on Rainbow her mind went blank. So much so that she didn’t even notice when Twilight attached a leash to her collar and began leading her down the stairs and to the kitchen.