Rainbow Dash runs facefirst into an Amazon Fluttershy's musky balls so often that she starts to wonder if that's just where she belongs.

“Oof!”

“Oh, my goodness!”

Rainbow Dash groaned. She stumbled back and rubbed her nose. Whatever surface she’d collided in had admittedly been softer than a wall, which she was grateful for. But with the warm, musky scent currently filling up her nostrils, there was no doubt what, exactly, she’d collided with.

“Ugh,” Dash said. She rubbed her forehead and glared at the subject of her ire: two enormous round bulges, each larger than her head, just barely covered by the cloth that pretended to contain them. “Dammit! Every time!”

“You do seem to be making a habit of this,” Fluttershy said timidly.

Dash looked up at her, hands on her hips. “Y’think?”

Where Dash stood at five foot ten, Fluttershy stood at just over twice that, the tips of her ears reaching eleven feet and ten inches. She towered over Dash, and in most buildings tended to need to hunch over to fit inside properly. Out here, though, in the middle of the Apple farmyard, she could stand straight and tall, without hiding any part of her body.

And what a body it was. Each one of Fluttershy’s arms was filled with thick, corded muscle, bulging with strength and easily the width of a smaller pony’s waist. Her two massive mammaries, each one full of muscle and milk alike - not that Dash would know anything about that second one, thank you very much - bounced lightly as they recovered from the impact. But that wasn’t what Dash had run into.

No. What she’d run into had been the duo of enormous, musky balls that strained oh-so-helplessly against Fluttershy’s tight shorts. Their outline made the idea of decency laughable, and the long, thick bulge going up from Fluttershy’s crotch all the way up to between her breasts just made the whole thing worse. Or, depending on how you looked at it, much, much better.

Rainbow Dash scowled and poked at one of Fluttershy’s massive balls, wrinkling her nose when the musky smell redoubled. She didn’t not like it…not really. But something about it just got under her skin, made her start squirming, and she wasn’t sure what she thought about that.

“Stop getting in my way,” she barked at the helpless nutsack. Any other pony might have looked at her weirdly, but Fluttershy just giggled.

“Are you sure you’re not getting in their way?”

“What’s that supposed to mean?” Dash asked. She glared up at Fluttershy - which was admittedly an achievement in itself, given both her size and her oversized hooters - and huffed indignantly. “You sayin’ something, ‘Shy?”

“Oh, nothing,” Fluttershy quickly said. “Just that you seem to run into my crotch an awful lot.”

“Maybe I do,” Dash said. “That supposed to mean anything?”

“Nothing,” Fluttershy said again. “Just that, um, maybe you actually like being near my crotch? Just as a guess.”

Dash opened her mouth to retort - and stopped, the words turning stale in her throat. She stared at Fluttershy’s enormous bulge, at the promise of sex, of size, of power lingering beneath that tight fabric, and at the moist sections where sweat or some other fluids had quickly bled through.

She swallowed, and finally said, shakily, “M-maybe.”

Fluttershy’s eyebrows went up. “Oh! Oh, my. Um. Would you like to see it then, Rainbow Dash?”

Before she knew it, Dash had blurted out: “Yes!”

Slowly, shyly, and with a small smile on her face, Fluttershy reached down to her too-tight waistband and took hold of it in her two enormous hands. Then, as if savoring every moment, she pushed them down, revealing more and more skin with every second until…

Dash gulped. Fluttershy’s scent was overpowering now, intoxicating. She watched with awe as her much larger friend’s balls swelled and throbbed between her legs, happy to finally have room to breathe. Her eyes noted every twitch of the massive tool between Fluttershy’s legs, which throbbed and pulsed with every second until Fluttershy finally reached underneath her shirt and, with a soft moan of pleasure, pulled her enormous, erect cock out from between her breasts.

It had to have been the size of a pony. Six feet long, Dash estimated, and maybe just a little under that wide. She realized that she was drooling.

“Want a closer look?” Fluttershy said shyly. She had her hands clutching at the base of her cock, her rippling muscles swelling and flexing slightly as she massaged her shaft and the tops of her balls. Dash nodded quickly - and then grunted as Fluttershy reached down, took a hold of her by the shoulders, and lifted her up to her crotch.

“There,” she said, plopping Rainbow down. Dash began to sweat as the space between her legs moistened. She was straddling Fluttershy’s massive cock - a stallionhood that may well have been larger than she was - with the soles of her feet resting on the amazon’s massive, musky balls. She leaned back and yelped as she felt Flutter’s enormous breasts nearly swallow her up, their soft, pillowy surfaces feeling like heaven around her head and upper body.

As it was, she settled for leaning against Fluttershy’s enormous, rock-hard abs as her friend’s cock throbbed between her legs, reaching above her head as a thin line of precum dripped from its tip. She looked up, blushing madly, and saw Fluttershy smiling down at her.

“How’s that?” Fluttershy asked.