Earlier that day, Rainbow Dash, from her cloud perch just above the town, had been keeping an eye on everything. She saw how Fluttershy reacted every time Spike was bouncing his ball.

She saw how Fluttershy orgasmed not long after as Pinkie Pie had found Spike’s ball from the ground and put it in her mouth.

And on the top of that, she saw Discord skulking around behind Fluttershy, talking about helping her.

She had then followed Discord around Ponyville, ultimately the trail leading her to the grocery store, where she overheard him telling something very curious:

Spike’s ball was actually Fluttershy’s clitoris, and he had taken it after mistaking it for a super ball!

Putting pieces together inside her head, she immediately understood that Discord had removed Fluttershy’s clit for some reason, and she was trying to find it. She left the store wondering where her friend’s crown jewel could be at that moment.

And then Rainbow had suddenly noticed the very same ball of a clit happening to be at Owlicoulous’s feet as he was pecking it!

Having scooped up the clit only a minute ago, Rainbow Dash lies on her cloud and looks around it.

”So many things, I could do with this…” She thinks to herself and chuckles, ”I can’t believe she and Discord could do something this kinky!”

She thinks for a moment, but only a hundredth of a second.

If she was any better friend, she would just go to Fluttershy and give her back her clitoris, but she’s not able to think that far. She’s given a chance to play Fluttershy a prank, and she’s totally going to use it!

Rainbow knows exactly what she’s going to do. Finding Fluttershy stumbling in the park she needs to cross to reach Rarity’s boutique, she continues to fly overhead.

Chuckling for a minute, she pokes out her tongue and gives it a lick.

”Just… one… hundred yards left!” Fluttershy keeps encouraging herself. She’s running past a pair of mares sitting on a bench and having a conversation, when she suddenly halts, feeling something wet and thick brushing across her clit.

”Eeep!” she yelps and halts, with her tail raising up on its own. She once again falls on her knees with her rump up in the air. Mares on the bench look towards her in confusion, not knowing what she’s trying to do.

Rainbow starts twirling her tongue around the clit, making Fluttershy moan and sway her hips. She gives the clit a nibble with her teeth, chuckling when she hears Fluttershy’s high pitched squeal below her. This is just so sick!

With a tip of her wing, she starts tickling the clit, biting her lip to smother her heavy breathing. Her heart is racing and her nethers start to dampen, her clitoris poking through her folds as she keeps teasing her friend’s sensitive love button.

RD looks down one more time to admiring her work. The mares on the bench have turned their heads away as Fluttershy keeps lying on the ground with her swaying rump high in the air.

”So… Awesome!” Rainbow snickers to herself, ”I can’t believe I’m actually doing this!”

Then she notices Big Mac walking towards Fluttershy, probably getting back to Sweet Apple Acres. She feels a twinge in her lower abdomen and shifts on her back, spreading her legs to set her winking marehood free. It’s already spurting out her juices, waiting invitingly for her touch.

”Awright! Let’s see how you like this!” Rainbow smirks, starting to lick and tease Fluttershy’s clitoris even harder, enjoying the screams she’s letting out. Her hoof trails down between her legs and she starts masturbating.

Big Mac’s eyes shoot open as he notices Fluttershy mooning at him, with her marehood squirting nectar on the ground. Not able to keep his composure, his impressive stallionhood drops down and forms into a thick tube of flesh, getting comically erect and ready for action. He veers off his path and walks towards Fluttershy, who doesn’t do anything to run away.

Then he stops on his track. Is he really going to rut her sister's friend in the open like that?

"Eee-nope!" Big Mac says out loud and shakes his head. This is WAY too suspicious, is this supposed to be some kind of prank?

Fluttershy looks at Big Mac and lets out a high-pitched whimper, getting his attention.

"I-it's okay, Big Mac!" She moans shakily, while Mac's ears perk, "Y-you can fff.... Mmmh... Hump me!"

She closes her eyes and pushes her rump higher in the air, more and more invitingly for the massive stallion and his even more massive stallionhood.

”Oh gosh! This is so hot!” Rainbow gasps. She moves her other hoof down to her pussy and starts flicking her bean with her friend’s clit. Subconsciously she starts stuffing it inside her moist vagina while she clops faster and faster.

Mares on the bench run away in terror as Mac tries his hardest to stay sharp.

"Nnnnnope!" Big Mac says and sweats, "A-Ah really have ta' get back home!"

"Mnnngg! O-oh, don't worry, Big Mac!" Fluttershy sways her hips even harder, "I... I'll allow it! A quickly in that bush!"

Lips of her marehood part even without the clit in its place, letting out a long trail of thick secretions towards Mac's direction. He doesn't seem to notice any difference.
"I can lick your... Butt hole!"

"Nnnope nope nope!" Big Mac tries to run away, but his senses seem to betray him. He's already getting closer towards Fluttershy to mount her, trying to aim his throbbing penis into her wet entrance.

”Yes! Oh yes! The sweet relief!” Fluttershy gets herself ready. Finally, she’s going to get stuffed! She’s going to-

”Nghuuuuh! Aaaaaaah!!!” Rainbow stuffs her hoof into her mouth as she climaxes, the erotic display under her cloud having taken its toll of her. She curls her rear legs and squirts a thick rope of marecum on the cloud, drifting into a post-orgasm mind numb for a moment.

"NNNNNNNOPE! AH CAN'T!” Big Mac dismounts Fluttershy hastily, "Ah... Ah just can't do it! Ah'm sorry!"

Mac makes his escape, wobbling away as fast as he can. Fluttershy groans in disappointment. She was so close to cumming!

”N-no! Come back, Big Mac!” She wants to scream, but she can’t. Tears start to form into her eyes once again as she watches Big Mac going away, ”I need your dick! Ow!!”

***

”S-sweet Celestia!” Rainbow pants while lying on her cloud, ”That was so intense- Huh?”

Suddenly she notices something. The clit she just had is no longer there, having gotten lost while she orgasmed. ”Oh no no no no! Where did it go?!!”

Unbeknownst to Rainbow, her orgasm shot her friend’s clit out of her cavity, making it roll over the edge of the cloud and fall down to the ground. The panic starts rising as Rainbow realizes she has lost her friend’s precious nub, her prank having gone too far!

At the same time Fluttershy hears masculine neighing behind her. She turns her head towards the sound, seeing Pokey Pierce and Caramel behind him. Mesmerized, they keep staring at her rump, their throbbing erections slapping rhythmically against their belly. The sight before her is menacing, but also somewhat pleasing.

"Ummm... You need some help, honey?" Pokey asks and sways his cock in Fluttershy's direction, making her blush deepen.

"Yeah, we could give you... Spitroast!" Caramel adds and smirks. Fluttershy gleams and nods happily.

"G-go ahead, boys!" Fluttershy surprises herself by saying that, as if she has gotten more and more forward in her desperation. The constant edging is already taking its toll, turning her into a cock-slut, a dirty whore, as Rarity would say! But it doesn't matter; if it's not Big Mac, then it's those two stallions!

Fluttershy closes her eyes and pushes her rump into the air once more. She's not trying to struggle anymore, allowing She prepares herself as she feels the warmth radiating from the stallions's cocks, her nostrils flaring as she smells Caramel's musk from his dick. She's going get her vagina and mouth stuffed by two hunky stallions, feeling giddy on the inside.

”I’m so sorry, Discord! I just NEED this…” She says to herself, anticipating those two stallions filling her from both sides...

”Ok! Show's over, chumps!"

She suddenly hears Rainbow Dash’s angry voice as she bucks towards the stallions, shooing them away in fear. She then grabs Fluttershy by the elbows and lifts her up, taking her away from the scene.

”R-Rainbow…” Fluttershy bats her eyes as they dash through the clouds.

”Hold on, Fluttershy! I’ll take you to somewhere safe!” Rainbow announces back, and in only 10 seconds flat she has carried her screaming friend all the way in her house.

”Whew, that was close!” Rainbow huffs and closes the door behind her, ”You should be more careful out there when you’re in heat!”

”N-no, I’m not!” Fluttershy replies and looks away in shame, ”It’s just… I-it’s different!”

”Don’t worry, Fluttershy!” Rainbow reassures, ”I’m gonna find your clit and-”

She then realizes what she said and mutes, noticing how Fluttershy jolts and looks back at her.

”Wait! How do YOU know about it?”

”Well, uh… I… Saw you...” Rainbow stammers, ”I mean… I was told…”

”Nah, we’ve got no time for this!” Rainbow clenches her hoof, ”I’m gonna get your clit back and when I get my hooves on that stupid dragonequus, I’m gonna whoop his butt!”

”W-what! No!” Fluttershy forbids worriedly, ”It wasn’t Discord’s fault!”

”Huh?” Rainbow is confused, ”But he’s the one who made you go through this!”

”I know! But… It was because… Well, it’s complicated!” Fluttershy tries to explain, ”But Discord isn’t the one to blame! You don’t know the- AAAAAAAAAAAAHHHH!!!”

Fluttershy suddenly screams and collapses on the floor, feeling as if her clit being smothered between two rocks.

***

Back in the Ponyville park, Big Mac feels something under the frog of his hoof. Something round and soft, a little elastic… Like some kind of a small pillow, or a ball. It feels rather nice, reminding himself of those gel pads he sometimes stands on while working long days at the apple orchard.

Confused, he holds his hoof against the ground, rolling the rubbery object around his frog. It feels a kind of funny, yet also pleasing. What could this object be?

***

”Ah! Aah! Aaah!!!” Fluttershy squirms and screams from the top of her lungs as Big Mac keeps cluelessly abusing her clit in the distance.

”I-I think I’m going… I’m gonna! KYAAAAAAAAAA-AAAAAAAH!!!”

A sudden, violent orgasm shakes her all over, orgasm making her squirt a huge torrent of marecum on Rainbow’s floor. She collapses on the floor and squirms in the afterglow, panting like an exhausted dog. Luckily the pressure on her clit subdues as fast as it started, giving her a moment of relief.

”H-hot…” Rainbow mutters in a mix of shock and arousal, biting her lip in excitement. Whatever that was, she also wants the same as her friend!

***

Big Mac lifts his hoof to look, noticing the object he just stomped on.

”Hmm, that’s weird…” he wonders, ”Ah better have a closer look when ah get home!”

”Eeeyup!” He says out loud after putting Fluttershy’s clit into his saddle-back and starts trotting back to Sweet Apple Acres…

-Chapter 7 end-

Author's Note

At first I was against this idea, as I thought Rainbow wouldn't do something like this for real, so I developed it a little further to make her realize her mistake and regret her actions.

Where to go next?