Rainbow Dash's wings were wrapped around the steering wheel with one feather holding down the trans-brake button. Her custom seat supported her in an upright position with a rear hoof sitting on the gas pedal.

She didn't like using her geode-unlocked powers while racing, so focused on keeping her personal time locked in with the world around her. Beside her, with just a few yards separating their cars, Rainbow winked at Derpy. "You ready to get your license?"

Derpy's mic crackled a little, but Rainbow heard her say, "Hell yeah!" just as her car became fully staged.

The first amber light came on, then another and another in a cascade. As the last amber light glowed, Rainbow punched the gas peddle and took her feather off the trans-brake. The engine, now with its air intake unimpeded, began doing what it did best—pumping a lot of air in, burning it rapidly with fuel, and pumping it through a pair of turbochargers, and using that impetus to pump more air in faster.

Like a runaway reaction, the engine roared to full life and—as the green light lit—shoved Rainbow back into her seat and the car forward.

What resulted—for both girls—was an eight-and-a-half-second ride of screaming excitement that ended when each had to pull the parachute levers in their cars.

Driving back to the pits, Rainbow was practically bouncing in her seat. She wanted to fly out the window and dance on her car's hood, but that would probably have lost her her new license as quickly as she'd gotten it. Pulling her car up to a stop, she climbed out and watched as Derpy pulled up beside her.

Climbing out of her car, Derpy spotted Rainbow galloping toward her and crouched down. "That was awesome!" She didn't hesitate to grab Rainbow into a hug and squeeze her. "That is a beast!"

Being told how awesome she was usually made Rainbow's day, today was no exception. "Thanks, I couldn't have done it without your help, though. Oh, here come the guys." Rainbow squirmed to get out of Derpy's grip before prancing toward Spicy Hot. "Hey."

Spicy ruffled his wings and put both his arms around Rainbow as she stood upright. Like her, he had hooves for his back legs and a tail, but unlike her, his wings were large and fleshy like those of a bat. He had fangs as opposed to Rainbow's flat teeth, but they both had cute pony snouts with which to kiss.

Flash Sentry, like Derpy Hooves, had a pair of pegasi wings on his back, and like her had a tail, slightly more rounded eyes than normal, pony ears atop his head, and a new love of hugging to show affection. "C'mere, babe." He wrapped his arms around Derpy and squeezed her against him. "I am so proud of you."

Angling her leg forward, Derpy pressed her thigh against Flash's groin and felt the hard plastic there. "You too, Flashy. How does it feel?"

"You know exactly how it feels. I'm trapped and all yours, and I love it." Pressing his lips forward, Flash found Derpy's with the ease of much practice.

"So what now? Off to college?" Spicy asked.

"Mmhmm. Orientation day tomorrow, remember." She looked at Derpy and Flash, and though the couple made her smile a bit more, one thing still confused her. "Hey, Flash, why didn't you wind up going to college too? Your grades were good enough."

Getting distracted from Derpy was always hard for Flash, particularly when she kept nuzzling and kissing him. But, despite her attempts to subvert every brain cell in his head, he managed to get a reprieve by turning his head toward Rainbow. "It's not the place I wanna be. I love machines and I love this crazy girl in my arms."

"Crazy?" Derpy asked, mock scorn in her voice.

"Yeah, because you love me back. That's gotta be grounds for being crazy." Flash squeezed Derpy's rear with both hands, though with her racing suit on he couldn't do too much.

Rainbow still couldn't understand what Flash meant by that—even though she'd heard him say it several times. Machinery was in her blood as surely as the eggs of the parasite living in her head was. That parasite, she knew now, was the reason she couldn't really go more than half a day without sexual relief and was also the reason her memory was now perfect. Since just days after the thing had grown to maturity, she'd been able to remember every waking moment in absolute clarity. Horniness was barely even a price to pay for that, and if it was, she paid it gladly.

"I still think you're crazy. You could do engineering like me."

"Rainbow?" Flash asked.

"Yeah?"

"I value your advice, but back off on this. This is what I want." Sticking his tongue out, Flash turned to Derpy and gave her yet another kiss to celebrate her victory.

"Rainbow, as your hunky batfriend, I must advise you to leave well enough alone." Spicy used his slightly higher mass to steer her back to her own car. "Now show me what I need to do to help you—again."

When she woke up the next morning, Rainbow only had one thing on her mind. There were vestiges of the parasite's instincts that had carried over to herself, and the one that had led to the creature puppeting her around in her sleep to lay eggs had been translated to her always waking up needing to use the bathroom.

Sitting down on the toilet, Rainbow felt instant relief as her body ejected her offspring into the water. Not that they lasted more than a second or two in the bleach-enriched water. "I swear, if it didn't make me so damn smart, this thing might get annoying."

"Are you coming back?" Spicy asked from where he lay on the bed.

"Yeah. You mind if I prep a little with a vibe?" Drying herself off, Rainbow stood up and flushed the toilet. She got halfway back to bed when she felt a jolt of electricity at the back of her neck. Every submissive bone in Rainbow's body whined and surrendered immediately to the stallion laying in her bed holding the remote to the toy collar.

When Rainbow moved faster to get back in bed, Spicy let out a soft, "Murrr. That's a good boy." He nuzzled and nibbled at her neck. "Tell me how I'm going to fuck you."

Shimming against Spicy, Rainbow nuzzled at his chest. "First you're going to have me suck you off. You're going to grab a good handful of my mane and make me polish your dick until it shines. Then, you'll make me turn around and present myself to you. You'll take some lube and smear it around inside my ass, then you'll plow me like a field."

"See, you were close." Spicy rolled to his back and showed off his belly and crotch. Reaching up to grab a handful of Rainbow's mane, he guided her down onto his hardening length. "But there is one thing this bat does do, and that's manual labor." Sighing as her throat took him, Spicy guided Rainbow up and down his shaft—slowly.

Letting herself be controlled, Rainbow slurped on Spicy's shaft until it was rock hard and filling her mouth. Their size difference meant that he wasn't just physically bigger than her, but his shaft was always just on the upper edge of what she could handle—and it drove her wild.

"There you go. This is how a good colt starts his day. Cock for breakfast, served extra hot." He couldn't help himself, and Spicy wasn't inclined to anyway, and started humping upward each time he brought Rainbow down onto him. With her lips pressing to the base of his shaft each thrust, Spicy was very happy with how the day was going.

Spicy, however, was almost at his limit. Pulling Rainbow up and off him, he used her mane to guide her further up the bed. "Show me that colt-hole you got back there." Reaching to the bedside table, Spicy used the pump there to fill his palm with the slick lube they both favored.

Barely getting time to turn around, Rainbow felt a slick finger poke into her rear. She moaned, knowing Spicy enjoyed hearing how much she liked his touch. When a second and third finger were added, her vocalizations changed into a long, deep groan.

With her rear and his shaft well coated, Spicy brought his hand down on her rump with a sharp smack. "Good boy, now sit on me." To help, Spicy held his shaft and guided the tip as Rainbow stood up above him. She looked down her body at him with so much hunger that he almost shot his load before her anus even kissed his tip.

When Rainbow's rear found Spicy's length, she let out a soft whine and relaxed her legs more. Gravity did most of the work of stuffing his shaft into her rear, though the stretching she'd been doing to accommodate him was worth every second. There was no pain and no friction—just the swelling fullness of a stallion's shaft in her rear.

Down and down Rainbow sank until her tight, muscled rear pressed to Spicy's groin and she had all of him. Eyes closed, she squeezed down on him until she heard Spicy groan. "Tight enough for you, master?"

"There you are." Spicy reached a hand down to where their bodies met, then up a little to the tight udder that Rainbow had. It was different from breasts—completely not breasts, in fact—and he stroked his fingers over her taut little teats. He could see the pleasure it brought to Rainbow in the way her eyes fluttered. "I think you know how this goes, my horny little colt."

Rainbow Dash didn't need explicit instructions. The only reason she'd paused at all was to hear him talk down to her. She bit her lower lip between the blunt teeth of her muzzle and lifted herself up and almost off him before dropping with the power of gravity to reclaim all his shaft inside her stuffed-full rear.

Straining to keep himself from getting off before Rainbow, Spicy kept playing with her tight belly and sensitive teats. "Not too fast. I know you love getting that asshole stuffed, but if you finish before me, I'll be upset."

Given the warm-up, Rainbow knew she wouldn't finish first, but Spicy could always pull a trick on her and do something to rev her motor. The slow rubbing of her belly and stroking of her teats did have her rapidly ascending the mountain of her orgasm, but she could see Spicy's muscles twitching already. Speeding up, she watching his eyes widen in shock.

With Rainbow gliding her ass up and down his shaft, Spicy was in pure heaven, but his command to not climax first was one he intended her to break. Reaching up with one wing, he cupped Rainbow's back and twisted her to the side and down to the bed. Scrambling over her, his hips took over the work and he started pounding much harder and faster.

Tilting her head back, Rainbow moaned like a banshee at the fucking she was now getting. She'd lost the sensation of Spicy rubbing her belly, but with how much she enjoyed anal sex, it wasn't needed.

Spicy drove himself into her over and over until he felt her rear tighten in a pattern he knew well. "Gotcha." He didn't slow, not intending to deny Rainbow the feeling of being buggered all the way through her climax.

Not that Spicy had much stamina left. As Rainbow's clutching ass seemed to be milking at him, he lost his own fight and gave her exactly what she wanted. His balls tightened and a trembling pressure built in his prostate before he literally blew load after load of hot seed into her rear.

"Y-You better jump in the shower, Rainbow." Spicy was panting hard, his body still blasting a rope or two of extra batspunk into her butt while he tilted to his side and rolled until Rainbow was again on top of him. "You have your orientation day today."

"Oh shit!"

Spicy's head spun at how quick she was off him and in the shower. She was just as quickly out again, dressed, and running for the garage. Still in bed, Spicy flapped his wings weakly and shook his head. "Fuck, she's amazing. Well, I'd better get ready for work."

Author's Note

So I do this "Ask X" thing. X can be any pony within the story. You can ask them anything and they will definitely, hopefully reply. Keep the questions appropriate to the age-rating of the stories, and they will answer the best question in the author notes of the next chapter. The more votes a comment has the more likely I will get it to the right pony to answer. Try to keep it to one question per post! They will pick one question per chapter.

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Awesome ponies who are already helping to keep me in keyboards and rum:
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CadelDdraigDarkkon
Canary in the Coal Mine
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KFS Crimson
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