Author's Note

Just as a reminder, everyone in this story is 18+.

The Zephyr Project

Principal Celestia sat staring at her phone, blinking in stunned silence, for several moments after Bow Hothoof hung up.

Vice-Principal Luna, who sat in her favorite easy chair reading the paper and drinking coffee, looked over to her sister. "I take it Rainbow Dash is going to be out of school for a while?"

"Apparently," Celestia said. "It seems she's somehow grown a giant magical horse wiener."

Luna raised an eyebrow. "A horse wiener? Now that's dangerous!"

"He sent pics," Celestia said numbly, tossing her phone casually over to Luna. Luna set down her paper just in time to catch the phone, juggling it briefly before taking a look.

Luna spat coffee everywhere. "THAT IS A COCK!" she bellowed.

"I believe I mentioned that," Celestia said.

"You said wiener. That is a freaking enormous COCK."

"Yes. Yes it is." Celestia stood slowly. "I'm going to get some rum. Do you want some rum?"

"Make mine tequila," Luna said, swallowing the rest of her coffee and setting Celestia's phone aside.

* * * * *

Zephyr Breeze cut a sneeze above the knees as he eased through the lees of Rainbow Dash's home. Fluttershy wrinkled her nose; the breeze smelled of cheese and it made her wheeze. "Follow me upstairs, please," she said curtly.

"You know it, sis!" Zephyr said cheerfully. "So what's the haps? I'm diggin' on a visit to Rainbows, heard she was under the weather. Does she need a little Breeze blown her way to brighten her day?"

"Something like that," Fluttershy said with a smirk. "We called you over here to have sex with Rainbow Dash."

Zephyr Breeze halted in his tracks. "Say what?"

"You're gonna go in there and screw Rainbow Dash."

Zephyr blinked. "Uhh...sis? Are you okay?"

"Hey, you've been trying to get between her legs since fifth grade," Fluttershy pointed out. "Don't tell me you're gonna puss out now when she's giving it to you."

Zephyr shook his head. "Sorry, I'm just...really confused."

"Well get unconfused, because we're keeping everybody waiting." Fluttershy turned and marched for the bedroom.

"Everybody?" Zephyr echoed numbly.

Fluttershy knocked twice, then opened the door, ushering her brother in. Zephyr's eyes took in the multitude of faces in the room, then landed on the naked form of Rainbow Dash, lying flat on her back in bed, her knees up and spread open as Twilight Sparkle shone a flashlight on her flushed, pouting, clean-shaven sex. A sleazy, 'this-is-too-good-to-be-true' grin started to slowly make its way across his face...

...and then he saw The Cock.

Zephyr Breeze's smug face dropped to the floor and shattered with a loud, porcelain-like *CRASH*.

"What...the..."

"Hey Zeph," Rainbow said in a dull, bored tone. "Like my dick?"

Zephyr struggled to find words. His jaw worked soundlessly. Finally, he chuckled and made a 'pshaw' gesture. "Hahah, okay, good gag, guys. Wow, you really went all out to pull one over on the ol' Breeze." He shook his head. "I mean, like, really all out. What is...what's..." He trailed off, sagging. "What's the gag here? I don't get it."

Twilight stood up and adjusted her glasses. "Alright, I've gotten all the baseline data I need," she said. "Give me a sec to set up the recording, then we can start the experiment."

"Oh hell no you are NOT recording this!" Rainbow cried.

"I have to," Twilight said. "It's part of the experiment. I need a visual record of the experiment so that I can collect any data I miss during the, ahem, direct observation."

"Wait, wait, hold up," Zephyr said. "What's going on here? Somebody clue me in, I am so lost."

"How's that any different from normal?" Rainbow snarked.

Sunset Shimmer cleared her throat. "Rainbow Dash grew a magical giant horse cock overnight," she said simply. "We're waiting for expert help to help us figure out how to get rid of it, but in the meantime Twilight wants to do all kinds of tests and experiments."

"One of which is observing the effects of normal vaginal intercourse on the anomaly," Twilight said.

"They want you to fuck her and see what the horse cock does," Fluttershy translated.

Zephyr laughed shakily. "Okay okay hold up," he said, chuckling and holding up a hand. "This is for real? That...thing...is more freaky horse magic, like the wings and pony ears thing?"

"Yeah, only a lot...stranger," Sunset said.

"And embarrassing," Rainbow added. "I can't even walk around the house without this thing getting tangled up in my legs and it just keeps jizzing all over the place."

"Yeah I'm out," Zephyr said. "Futa grosses me out enough when it's just drawings. This is too freaky for me. Later Rainbows."

"Wait!" Twilight cried. "We need you! Somebody needs to engage Rainbow Dash in intercourse so I can observe!"

"So one of y'all do it!" Zephyr retorted. "They make strap-ons for this kind of thing!"

"For best results, I need a genuine stimulus reaction! A live, fully biological male specimen!" Twilight countered.

"And you're the only dude we can think of who's that hard up for poon!" Pinkie Pie added cheerfully.

The room went deathly quiet, the temperature dropping several degrees.

"...damn, that's cold," Zephyr said frostily, giving Pinkie Pie a hurt glare.

"Look, Zeph," Rainbow said, wedging herself up slightly in bed, "think about it for a minute. This is literally the only time you will ever be in a room with me naked. This is definitely the only time I'll ever even think about letting you touch me, let alone fuck me. In fact, I can personally guarantee that every day of your life from now on, if I lay eyes on you, I will punch you in the face on general principle. So if you know what's good for you, you'll man up, bring your dick over here, and do the thing."

Another silence descended, accompanied by tons of blinking.

"Wow, that was...the most bizarre and oddly moving motivational speech ever," Sunset said in an impressed tone.

Zephyr sighed. "I can't," he said. "I mean, I took one look at that thing and Li'l Breezy curled up and died." He shrugged. "I am the opposite of turned on right now. I don't think I could get it up if this whole room full of hot girls got naked and started going at each other." He gestured down at his pants. "See? Even thinking about that didn't give me a speedbump!"

"Oh for goodness' sake," Fluttershy said, facepalming. "Just...ugh." She walked over to Zephyr and crouched down in front of him, jerking at the drawstring of his pants. "You all owe me for this," she said as she yanked her brother's pants and underwear down around his ankles.

"Fluttershy?! What are you—" Rainbow cried in alarm.

Fluttershy's pink tongue lashed out and slurped up Zephyr's dangling doodle, pulling it into her mouth.

Twilight's jaw dropped. "What in the world?!"

"Oooh, plot twist!" Pinkie said, grinning from ear to ear.

Both hands planted firmly on her brother's hips, Fluttershy emitted a litany of soft sucking, slurping sounds and quiet grunts as her buttery soft lips went to work on Zephyr's dick, which ever so slowly began to rise to mast, the seafoam-green shaft looking firmer and more girthy each time Fluttershy rocked back on her heels.

Sunset pinched the bridge of her nose. "Well, this is it," she muttered. "We've officially reached rock bottom."

"I can't believe I'm seeing this," Windy said. "I can't believe I'm not stopping this!"

"I think the cum stench in here is getting to all of us," Twilight said. "It's the only logical explanation."

Fluttershy's sucking grew more frantic, and Zephyr let out a loud hiss of pleasure.

"That or we're all a bunch of perverts," Pinkie Pie said.

Zephyr's rock hard mast popped out of Fluttershy's mouth with a wet sound, a trail of saliva connecting them. "Okay you're ready, now go!" Fluttershy instructed, backing away from her brother and standing up. She turned him in Rainbow's direction and smacked him sharply on the ass, sending him staggering forward. Zephyr caught hold of the footrest of the bed, over which Rainbow's hot, flushed sex was dangling. He grabbed onto her legs, pushed them high up in the air, and buried himself in her pussy.

Fluttershy ran out of the room for a minute. When she returned, she had a roll of mints and a bottle of orange juice. "God that was nasty," she grumbled as she gargled with juice before popping mints in her mouth and crunching on them.

"And yet you showed absolutely no hesitation in doing it!" Sunset exclaimed.

"Well somebody had to!" Fluttershy cried.

"Ugh...Rainbow, get your—ngh—dick outta my face," Zephyr grunted as he slapped his balls against Rainbow's snatch. "It's...ngh!! Oh god!—super killing the mood here!"

Rainbow rolled her eyes, but grabbed onto her dick with both hands and pulled it toward her. It swung all the way down willingly, landing between her breasts, the tip just below her chin.

"Oh man, you could—ngh—titfuck yourself with that thing, couldn't you?" Zephyr said as he pounded Rainbow as hard as his reedy hipster frame would allow.

Precum was already drooling out of Rainbow's horse cock as it bounced and waggled with each buck of her hips. "Huh, I guess I could," Rainbow said. She took hold of her tits and pressed them to either side of the horse cock, squeezing it firmly and rubbing its massive shaft with her modest boobage as it waggled, bounced, and thrust.

"Oh...my," Fluttershy said, face beet red.

"Wooo! GO, DASHIE, GO!" Pinkie cheered, tossing handfuls of popcorn and red hots into the air.

"You know, I always hoped I'd be there for Rainbow's first time, but this is not what I had in mind," Windy commented. "I always thought it'd be under the bleachers, maybe one of her teammates doing her from behind—"

"OH MY GOD MOM WILL YOU JUST STOP?!" Even as she said this, her horse cock exploded, spraying cum into her open mouth. She gagged, spluttered, and coughed as more of it got into her mouth, hair, and eyes.

"Ungh! Agh! Oh—oh fuck—I'm about to come!" Zephyr grunted.

Rainbow Dash panicked. "PULL OUT! DON'T COME INSIDE!"

"NO!" Twilight yelled raggedly, her eyes too bright behind her glasses, her face flushed. "COME INSIDE HER! GIVE HER EVERYTHING YOU'VE GOT! BUST THAT NUT LIKE YOU'VE NEVER BUSTED IT BEFORE! FOR SCIENCE!"

"Twilight, what—" Sunset began, eyes wide and alarmed.

"SCIENCE!!" Twilight bellowed again, breathing heavily. "Raw, naked SCIEEEEEEEEEEEEENCE!!" She dropped back into her seat, breathing heavily, her face flushed and her eyes glassy.

Zephyr blew his load inside Rainbow, then staggered back, his dick twitching as he wobbled dazedly. Rainbow's cock SPRANG upright, spraying jets of cum all over the room. Pinkie, Fluttershy, Twilight, Sunset, Windy, and Zephyr all got splattered; as Zephyr was physically the closest, he took a massive SPLAT right to the face, a thick wad of it going right into his mouth. He cried out in alarm and disgust, then started coughing and spluttering. He dropped to all fours on the floor, retching violently, covering a pile of Rainbow's dirty underwear with cum and vomit.

"UGH that's fucking nasty why do guys make girls swallow that shit?!" Zephyr wheezed.

"I'm gonna have nightmares about this for years," Fluttershy grumbled, idly wiping some of Rainbow's jizz off her face.

Twilight stood up, her knees shaking and her glasses fogging up. "I have so much data to analyze," she said. She cleared her throat. "Um, Mrs. Whistles? Is there somewhere I can have some privacy for a little while? To, umm...review?"

Windy nodded mutely. "The guest room, it's the third door on the right."

"Thank you," Twilight said. She grabbed Zephyr by the elbow. "Come on, Zephyr," she said. "I need to run a few extra tests...controls, baselines, variables, it's all sciencey stuff."

"Uhh, okay," Zephyr said slowly, blinking. "This, uhh...ain't gonna have needles is it? Cuz I'm not a fan of needles."

"Oh, I wouldn't worry about that," Twilight said feverishly. "You won't be the one getting penetrated..."

Rainbow, Windy, Pinkie, Sunset, and Fluttershy stared after them.

"Uhh...she's not gonna..." Rainbow began. "...is she?"

Sunset facepalmed. "I don't know, I don't wanna know, not my problem."

Fluttershy examined her half-empty bottle of orange juice. "Mrs. Whistles, do you have any vodka...?"