Rainbow and Sweetie’s Rear Defense Training

Rainbow Dash sat there staring at Rarity and Sweetie Belle. “Are you two nuts?”

Rarity rolled her eyes. “No, darling. We’re both mares. Neither of us have those.”

“I meant are you crazy?”

Rarity giggled. “Oh my, yes. Crazy in love with each other.” She looked down at Sweetie Belle. “She really wants help with this, and I fear that my… skills in this department might fall in comparison to yours.”

Rainbow Dash leaned against the wall of Rarity’s room. It smelled like piss, sex, and something otherworldly in here. Still she couldn’t deny, compared to Scootaloo, Sweetie Belle did have a nice little ass… well it was actually rather large, and thick. Perfect for anal sex, but this request was still strange.

Rainbow Dash looked at Rarity once more. “You know, I’m not exactly… gentle all the time.”

“Oh don’t worry, I’ll be right here watching. But… I’m not always gentle with her either.”

Sweetie beamed up at her. “It’s okay, I like it rough too. Can you please help out Rainbow Dash!”

Looking at that innocent little face. The cute smile, the big round puppy dog eyes. Rainbow just couldn’t find it in her heart to say no. She let out a sigh and then nodded. “Alright, I’ll use anal toys on you kid. Just… do you have all the stuff we-“

Rarity pulled out a box from under her bed. It was already open and revealed all manner of sex toys, lubes, and beads. “Yes, we are.”

Rainbow dash nodded. “Alright. Sweetie, get your ass up on the bed. I’m going to start fucking it hard. But, don’t say I didn’t warn you.”

Sweetie Belle climbed up onto the bed. Her round fat ass wiggling the whole way. Once there she lowered her head to the bed and stuck her ass up as high as she could. “Is this okay?”

Rainbow Dash looked at Rarity. “Goddess, you really did teach her.”

Rarity already had her hoof between her legs, rubbing herself. “Yes, yes, now go up there and fuck my little kid sister already.”

“You’re getting off on this?”

“Of course I am,” Rarity said it like it was the most obvious thing in the whole wide world.

Well if these two were down to fuck that much, then she had no qualms about it either. She picked up the box, dumped it’s contents onto the bed and then climbed up. “Fine, but I’m going to start at the beginning.”

She set herself up behind Sweetie’s exposed, vulnerable ass. Her tiny pussy lips were already dripping their precious love juices onto the bed. Rainbow reached out and ran a hoof against them, feeling the sticky juices cling to her hoof. Sweetie let out a dirty groan as she did. Once Rainbow pulled her hoof away she gave it a sniff, and then licked it. Honeysuckles. Now that was a surprising flavor.

Still she was here for anal play, not vaginal. Though she might switch things up during, who knows. Surprises could be fun after all.

Rainbow Dash put a hoof on either side of Sweetie’s rump and began massaging it. “Goddess, Sweetie, you have an amazing ass for a filly.”

Rarity was leaning over the bed watching. Her face was entirely flushed red and she was panting. “I-I know. I love her ass so much. My precious little sister’s perfect ass.”

Rainbow Dash had to agree. Though she wouldn’t tell Scootaloo that her tiny ass didn’t compare to Sweetie’s. Now it was time to get to playing. Rainbow Dash picked up a bottle of coconut scented lube, and poured a gracious amount all over sweetie’s tiny young asshole. Sweetie squeed as the cold gel landed against her body.

Once there was enough of it covering her ass. Rainbow set the bottle aside and using a single hoof began to massage its contents into Sweetie’s fur. Making sure to carefully, and massage that cute little pucker as well. Sweetie made cute little noises of pleasure as she did. Her fillyhood winking at her as if begging Rainbow Dash to stop teasing and get on with it already. Well this little filly was going to have to wait, Rainbow Dash was going to take her sweet ass time with this.

Looking over at the pile of sex toys. Rainbow found a few she particularly liked. So once she was done massaging Sweetie’s asshole she got to work preparing a few things in advance. The first thing she did was take the strap on, which had a side that slipped into Rainbow’s pussy, making her groan as her own nethers were begging for the attention too, then making sure it was nice and tight.

Rarity asked. “Are you moving to that already?”

Rainbow Dash shook her head. “No, not yet. We’ll get there though.”

Next she picked up a small little buttplug. It was bright pink and clearly designed more for training than the final product. She lifted it over to Sweetie’s backdoor, gently rubbing it against the folds of her anus. Sweetie let out a lewd noise that made Rainbow’s heart skip a beat. It was somehow sexy and cute at the same time. Good lord she wanted to just fuck this filly silly. She had to restrain herself, training first, fun second.

She pushed the tip of the toy against her asshole. Sweetie groaned. There was some resistance, so she pushed a little harder and the top slipped inside. She kept pushing, watching Sweetie’s hungry ass devour the buttplug until it went over the hump and then sunk right in. Sweetie let out a grunt as it did.

Now that it was there, Rainbow smirked. “Step one complete, we’re just going to let that little thing sit inside your ass for a minute.”

“B-but, I’m so hot.” Sweetie complained.

“Then let the one and only Rainbow Dash help out.” Rainbow Dash leaned forward. Bringing her muzzle to Sweetie’s tiny petals. She could smell Sweeties’ musk, it was thick and lusty, yet had a sweet tint to it. Her head was fogging over with lust, but she remained as cool as she could. Sticking her tongue out, Rainbow Dash began licking up and down Sweetie’s slit. Pressing her tongue deep into the folds of the filly’s flesh and tasting her innocent juices as the flowed out.

Sweetie moaned as Rainbow Dash continued working her tongue against her tiny body. Rainbow’s hooves squeezing that ass tight. She buried her tongue deep into Sweetie’s hole and felt it as Sweetie’s walls squeezed down. The filly let out a tiny squeak and Rainbow pulled back in time to see those precious juices gush out as Sweetie was hit by her first orgasm in the session.

Rainbow Dash let Sweetie’s body finish the orgasm, slowly letting it relax first. Then she reached out with her teeth, rapping them around the edge of the buttplug extending from Sweetie’s ass and pulled it out. Slowly she watched as Sweeties’ anus pulled out with it for a moment, trying to suck the toy back in. Once the toy was all the way out, it left Sweetie’s asshole gaping open for a moment, letting Rainbow dash catch a glimpse of the venerable insides of Sweetie’s ass.

Rainbow Dash put the buttplug down. Rarity picked it up and began sucking on it like a binky, tasting the insides of her little sister’s ass. Groaning as she continued to masturbate to the show.

Somehow Rainbow Dash got the impression that perhaps this wasn’t actually meant as a training lesson after all, but was in fact just one of Rarity’s weird ass kinks. Well it was also one of Rainbow’s so she’d live with it.

Rainbow dash picked up the anal beads next. There were five of them on this string. The smallest one the size of a bead, the largest one a little larger than a golf ball. She brought the smallest bead to Sweetie’s asshole. Pushing it in and watching as the hungry anus sucked it right in. Sweetie groaned in response.

Rainbow pushed the second one in, it was sucked n just as easily as the first. Then the third one, she had to push a little get this one inside of Sweetie’s young inexperienced ass. Then she moved onto the fourth one, this one as large as a golf ball, forcing her to push some pressure into it before Sweeties’ asshole ate it. Sweetie grunted with the effort. Yet there was one last bead. Rainbow brought it up to Sweetie’s ass and began rubbing it against the flesh of Sweeties’ rear entrance. Slowly she pushed it in. Making Sweetie grunt and groan as it slipped in ever deeper until finally with a wet pop it was sucked in all the way.

Sweetie was left there groaning as she wiggled her ass. The little hook that stuck out of her asshole from the anal beads dangling uselessly. Rainbow rubbed some lube over her strap on like a makeshift cock. “Mmm, you look fucking good, Sweetie.”

Sweetie groaned. “Rainbow, I’m hot again. Make me feel good. Please.”

“Well since you asked so nicely.”

Rainbow reached out with a wing tip, slipping it into the hook and began pulling at the anal beads. At first they didn’t budge. “You have to push them out, Sweetie.”

Upon the instruction she watched Sweetie’s anus push outward, winking at her. The largest bead began to protrude. With a little extra help from Rainbow pulling on it, it popped out with a wet sound. Then the next one came out, and the next. Finally Rainbow had to pull the last two out herself. Once that was done, and the anal beads smelled like the inside of a filly’s asshole, she set them away.

Now they could move onto the final course.

Rainbow Dash grabbed Sweetie by the ass and pulled her back. Sweetie yelped from the sudden movement. Rainbow Dash pushed her large ass down toward the tip of the strap on, her backdoor rubbing against it. It wasn’t quite as large as the last anal bead but that didn’t make it any easier. Rainbow had to push harder and watched as it slipped into Sweetie’s ass.

Sweetie let out a deep guttural noise as her asshole was violated by the toy. Rarity was moaning now as she rubbed herself harder. “Fuck her, fuck my baby sister like a sex toy!”

Well if she wanted that, then she’d have it.

Rainbow Dash began thrusting up into Sweetie’s ass. She had to work slowly for a moment as her asshole was squeezing down tight. Soon enough though it loosened up and she could thrust harder than before. Faster too. Each thrust making Sweetie gasp, and groan. Rainbow Could feel it herself. The part inside her pussy was moving with every new thrust.

Rainbow thrust harder still. The sounds of her hips meeting with Sweetie’s small ass clapped around the room. Each new thrust making Sweetie grunt with the effort. Soon she felt it as Sweetie’s body tensed up. Sweetie Belle let out an ear piercing shriek as she came a second time. Her orgasm forcing her tiny pussy to squirt all over the bed. Still rainbow wasn’t done yet, she kept thrusting, fucking that small ass harder and faster. Her insides burning with desire.

It took a couple of minutes of rough, hard fucking before Rainbow finally pushed herself over the edge. She thrust up one last time, burying the strap on cock as deep as she could into Sweetie’s asshole. Shoving all the way to the base. Sweetie let out a one last grunt as Rainbow cried out. Her body exploding into fiery pleasure. Looking over she watched Rarity close her eyes and scream as her entire body shuddered from an orgasm at the same time.

Finally Rainbow Dash could relax. Pushing Sweetie’s ass off the strap on and leaving her exposed, gaping asshole visible to all. Rainbow Dash panted heavily as she lay there, looking at Rarity and then back to Sweetie’s ass.

“That was hot,” Rarity said.

Rainbow Dash nodded. “It was. You uh, wanna reverse roles and try out Scootaloo next?’

Rarity looked at her. “I thought you’d never ask.”

Author's Note

About this chapter. Honestly not too much to say other than this had to happen eventually.