The Best. Week. Ever.

Soarin’ had delivered Rainbow Dash and her unicorn entouragé to Spitfire as ordered, and the stallion now stood at the back of the room while Spitfire got the measure of the two ponies in her office. Once Spitfire was satisfied, she walked between them, and addressed the curious stallion, “Good work, Soarin’. You can take the afternoon off; report for duty as usual in the morning. Dismissed.”

Soarin’ seemed positively delighted, and after saluting, darted out of the room without even closing the door behind him. Spitfire sighed, and closed the door herself, taking particular care to properly engage the locking mechanism. Rainbow heard the click of the lock engaging, but was far more engaged in working out precisely how fucked she was.

On immediate reflection, it didn’t look good; Rainbow knew that that stallion got a good look at the shenanigans that were going on, and that it wasn’t hard to see that Rainbow had a foal chin-deep in her pleasure box. She was already resigned to losing her place in the Wonderbolts, and she’d deal with whatever the tabloid press printed in Canterlot when the time came.

Spitfire, meanwhile, nudged her two firefly lanterns in the room, before slowly closing the blinds behind her desk. The lack of sunlight finally gave the fireflies their chance to shine, literally, and the room was bathed in a soft orange glow.

Taking a seat, Spitfire took visual aim at Rainbow Dash before firing the first verbal volley, “Is there something that you want to tell me, newbie? Before you’re given a dishonourable discharge?”

Rainbow Dash gulped, trying to hold back tears forming in her eyes. The dejected pegasus couldn’t maintain eye contact with her commanding officer, and only offered a head shake in response to the question put to her.

Spitfire rose from her seat, and casually took up a position between Rainbow and her desk before continuing the lecture, “Ponies accepted into our ranks are expected to follow certain standards and traditions. That goes for you, me, Soarin’, all of us. What was your first mistake, newbie? Answer me.”

Rainbow Dash wearily lifted her head up, and finally found the presence of mind for words to leave her mouth, “... letting myself get eaten out by a foal.”

Spitfire rolled her eyes, “No, newbie. Your first mistake was getting caught.”

Rainbow Dash’s ears pricked up, and she finally found the courage to make eye contact with her superior, “.... ma’am?”

“Dash”, Spitfire began, “we’re an aerial acrobatics team. Beyond the raw talent needed to keep up with each other, we only have one other concern. Image. You showed extremely poor judgment in that utility room. If that had got out, the entire team’s image would be ruined, not to mention yours. Do you have any idea what the steps I had to take to make sure that he wouldn’t spill the beans?”

Dash’s brain was fumbling for answers, but she could only manage another shake of her head. Spitfire, meanwhile, wasn’t done yet, “I’ll tell you, newbie. I had to give him some of the best head that he’s ever had.” The yellow-maned pegasus stomped a hoof on the floor to punctuate her frustration, “Me, the head of the fucking Wonderbolts, asking the fucking janitor, what I could do to him to leave your name out of the shit! Do you have any fucking idea how humiliating it was for me to beg him to not go public with this?”

Rainbow gulped once again, out of sheer anxiousness for never having seen her commanding officer this pissed off before. Spitfire continued her expletive-laden tirade, “To make matters worse, I’m in my fucking heat cycle, and he virtually pleaded to rut me. I had to settle with giving him anal. I had to fucking bend over, and let him shove his cock up my ass. You’re going to pay me back for that experience in fucking spades.”

Dash raised an eyebrow, and looked at Spitfire, then over at Sweetie Belle, and then looked at Spitfire again, “Wait, you’re…”

“I’m what, into fillies? Well, I’m not against it. I’m more into colts myself; last year, I bedded this absolute stud, the young son of one of the reserves. I didn’t exactly intend for it to happen, but it kinda just did… which is what I assume happened with you two. But, I’m in the mood to get my rocks off, and right now, I’ll take anything. But, before we begin, I need you to do something.”

Spitfire retreated behind her desk, and using her teeth, deftly extracted three vials of liquid, and placed them on the desk. Using a hoof, she flung one of them at Rainbow Dash. “Drink it, newbie, if you expect to walk out of here without being demoted back to cadet.”

Rainbow Dash hated being blackmailed, but accepted that, in this circumstance, she needed to swallow her pride, in addition to whatever else was being dished up by Spitfire. The domineering instructor had disrobed entirely from her uniform, and was lightly gulping down one of the other two concoctions on the desk. Rainbow followed suit, and swallowed the bitter-tasting liquid in her vial.

Sweetie Belle was the first to notice the changes to Rainbow Dash. The foal saw that the cyan pegasus was getting taller, although her body still kept the same athletic proportions she was well-known for. Her eyes were drawn next to her undercarriage, and the curious unicorn couldn’t help but notice that there was a new bulge resting between her rear legs.

Rainbow, meanwhile, wasn’t sure that what she was feeling was good or bad, “Um, Spitfire…” Rainbow began, but upon hearing herself, she immediately brought a hoof to her mouth. Spitfire spared the pegasus before her from the confusion that was swimming lengths in her mind, “That potion I gave you was a gender flipper. Congratulations! For the next, oh, several hours, you’re a stallion. Speaking of gender flipping…”

Spitfire emerged from behind the desk, and both Rainbow Dash and Sweetie Belle had no trouble seeing that she was sporting an erection, “I took a slightly different potion that doesn’t just mess with my base gender, it just gives me some additional equipment. The potion I gave you, on the other hand Dash, makes you a full stallion, and as your unicorn friend can no doubt confirm, your other bits are currently emm aye ayy.”

The fiery-maned pegasus walked up behind the startled cyan pegasus, and placed a hoof on her flank, “Kneel for me. Now.” Rainbow knew better than to resist what was basically an order from her commanding officer, and she acquiesced to Spitfire’s will, laying as she did on the floor. Spitfire lifted up Rainbow’s tail, exposing his tightly-puckered chocolate starfish to his hungry commander. Getting into position, Spitfire gently ran the head of her new penis up and down Dash’s tailhole, ensuring that it would at least have some lubrication, before finalising her position for insertion. The clearly-horny aerial veteran leaned forward to whisper into her subordinate’s ear, “Just remember, this is going to hurt you more than it hurts me.”

As if to punctuate that thought, Spitfire immediately thrusted forward, feeling the confines of Dash’s intestines rudely embracing her sensitive member, grunts of protest futilely leaving Rainbow’s throat. As Spitfire got bolder, Rainbow Dash’s resistance evaporated, and after several thrusts, Spitfire hilted herself on her newest recruit. Spitfire couldn’t help but hear the soft moans coming from the now-male pegasus beneath her every time she thrusted forward, but was far more concerned with the feelings of warmth around her newest appendage.

Having got as comfortable as she was getting, Spitfire began to rapidly quicken her pace, Dash’s anal mucus providing just enough lubrication for the horny pegasus to not need to slow down her thrusts. Rainbow Dash wasn’t quite sure this was actually happening; his mind was undergoing a complex series of mental gymnastics to prove that was happening wasn’t really happening. That desperate mental exercise was disrupted by a sudden flood of warmth inside him, as his ears tuned themselves to recognise that the deep grunts he could hear, in fact, belonged to the mare behind him. Spitfire’s grunts turned into exhausted moans as Rainbow came to the realisation that his commanding officer had just dumped a load in him, further reflexively hilting herself inside him.

For a few moments, Spitfire seemed to settle into what might be considered more normal behaviour, nuzzling up as she did against the shocked pegasus beneath her, enjoying the smell that permeated his fur.

Those post-coital moments were interrupted by Spitfire snapping herself back to reality, re-adjusting her spectacles in the process, as she raised herself from the humiliated Rainbow Dash, her cum-stained appendage still spilling her seed onto the carpeted floor as it flopped out of Dash’s pulsating ponut.

Getting back behind her desk, Spitfire eyed up the defeated-looking Rainbow Dash, “Get up, Newbie. I want you to think long and hard about what happened here today. I don’t want to hear any more stories from the public about your… indiscretions. Understood?”

Rainbow Dash could only nod weakly, her mind in too much shock to even get upset over the ordeal that just transpired. On receipt of her nod, Spitfire motioned to her to leave, “Dismissed, then. I believe you know the way out.”

Choosing the closest, least-guarded exit, Rainbow signalled Sweetie Belle to climb on his back, setting his sights on his cloud house. With a less-than-graceful wing deployment, Rainbow once again took to the skies, and started to make her way back to her sanctuary… although Rainbow admitted privately to herself that, right now, the ground looked like a mighty tempting thing to dive toward.