Part 1, Machine
Princess Celestia, diarch of Equestria and its half-million human inhabitants stood in the window overlooking Canterlot, the capitol of her kingdom. The morning air was cool and invigorating. In the distance she could see pennants swaying in the breeze. She cupped the tea in her hands and took a sip, grateful for both its warmth and its pain-relieving properties.
This was going to be a bad day, she could tell.
She walked stiffly back into her bedchamber sat in front of the vanity mirror. As with any day, this one began with a thorough brushing of her flowing, multicolored hair. She considered the reflection, and decided that at a thousand (plus or minus a few centuries) she still looked pretty good. Her breasts were still large and firm, there weren't any wrinkles that a little magic couldn't cover up and, in her royal opinion, her ass looked as good as it had a half-millennium ago.
There was only thing that marred her otherwise-perfect form. Between the alabaster thighs of the most powerful female monarch in Equestria hung nine inches of prime princess penis.
In hindsight, it was obvious that Luna's disastrous stunt was a plea for attention from an insecure sister with abandonment issues. This is if being-exiled-to-the-moon-for-a-thousand-years-by-your-only-sister could be simplified to a mere 'abandonment'. Maybe Celestia was a little too proud of her star pupil: every evening she forced Luna to listen to Twilight's friendship-status updates and amazing magical discovery reports and embarrassingly ingratiating teacher's-pet suck-up notes. She was could not see that each amazing feat Twilight achieved under Celestia's tutelage only made Luna feel more inadequate and socially inept. Luna saw Twilight as a rival for her sister's affection and secretly hated her for it.
So one evening Luna had enough. She decided that she would prove to her sister that she could perform any thaumaturgical feat that purple twerp could. Before her older sister could react, she found herself the target of a transformation spell of incredible power and emotional complexity. Luna's intent was to give her sister a dramatic but temporary "gift" that she would never forget. And Luna succeeded better, and worse, than she could possibly imagine.
Once the cock-shock wore off, they had an amazing night of discovering the ins and outs, literally, of being a princess with a cock. It was so much fun that Celestia convinced her younger sister to conjure one up for herself. All night long and into the early morning they explored the new and exciting uniqueness of loving each other in a masculine way.
Luna was lucky. By the next morning her modest package had disappeared, leaving only happy memories in its passing.
Celestia's cock, on the other hand, had not shrunk one bit, and neither had her libido. Even though Luna's gift did not include a nutsack, the new addition continuously manufactured cum. It would swell and start to hurt if she did not empty it three or four times a day. It made it difficult to get a full night's beauty rest. Even if she was lucky enough to sleep through the night, as she did last night, it took several cups of aspirin tea to get the swollen cock-ache under control in the morning.
Luna and Celestia tried every spell they could find, but nothing countered the wild, emotion-filled magic that had created the problem.
Luna was the only one who knew her secret, and by default was her only sexual partner. But being the sole beneficiary of a well-hung nymphomaniac's affections was physically and emotionally grueling. Eventually it became unbearable, and within a couple months of the magical disaster Luna had limped out of the castle, every orifice battered and bruised. She promised to continue working on a cure, and would be in touch as soon as she had any success.
She also considered very seriously taking a vow of celibacy.
Luna's parting gift was a magic-powered mechanical surrogate. It was not as comfortable as her hands, but it was faster and emptied her more completely. Celestia took some lotion and greased up her cock, which stiffened a little in gratitude. She slid the lubricated member into a long tube attached the machine, and pulled it snug against the base of her pole. She waved her hand and a tiny magic spark leapt to the machine, which began humming.
Celestia could feel the suction stretching her cock lengthwise, but at the same time the vacuum allowed more blood to fill its erectile chambers. The larger it got, the more it rubbed against the inside of the tube, a continuous cycle of increased stimulation. When the machine released its pull, her member shrank back an inch to its normal, but still very large, size. Again the suction returned, drawing her forward, imitating the penetration of some bodily orifice.
The cycle of suction, release, suction, release continued, pulling her back and forth in the tube. The machine performed its job well, and on a good day she would usually achieve orgasm within five or ten minutes.
The machine would force her to ejaculate again and again, literally sucking the sex fluid from her. It would take nearly a minute to extract a full load of fluid, during which she would orgasm continuously. She usually released a quart of semen per pumping, an amount that had remained unchanged since that fateful day.
The machine was physically efficient, but it got a little monotonous. Although she never failed to achieve a glorious erection, being machine-milked three or four times a day was not very arousing. Lately it had been taking longer to fill the glass jar, and if it took more than ten minutes of tugging she would get a little sore. She discovered that a little fantasizing helped, and sometimes she surprised herself with how naughty her daydreams could be...
One of her fantasies involved dominating and humiliating a palace guard. She didn't know why she liked this one so much; it was a little harsh as princess fantasies went, but it certainly relieved a lot of pent-up frustration. Maybe the demands of the court, as well as the demands made by her cock, were becoming too stressful.
In her erotic dream she would make a surprise visit to the barracks of the palace guard. She would order all the tall, well-built soldiers (for she liked her men that way) to stand at attention as she inspected each one. She had perfected a particular stride for such occasions; each step regal and precise, but also one that caused her princess tits to jiggle and her ass to swing ever so slightly. While she would pretend to inspect their uniforms and bunks, she would instead be scouting for large bulges which indicated men fit to service her royally.
When she found her victim, she would berate him about some minor imperfection, shaming him in front of his peers. Declaring him unfit for duty, she would order him to perform some degrading penance, perhaps changing the royal chamber pots, which would require him to accompany her to the royal bedchamber. Once there, he would be instructed to remove his clothes. The dumbstruck guard would then slowly disrobe in obedience to his princess. While he stood at attention, silent and immobile, she would take his member in the palm of her hand and massage it until the first beads of nervous sweat appeared.
Next, she would allow her robe to slip seductively off her shoulders, exposing her full, rounded breasts. She would hold tightly to the sash; the fantasy would be ruined if too much was revealed too soon.
Kneeling before the guard, she would lift her tits seductively and wrap them around his cock. He would sigh heavily, and she would drag them slowly up and down its length. In no time her sex slave would be sporting a glorious erection. She would continue to pump him slowly until his balls came on line and her cleavage was slathered with a film of slimy pre-ejaculate. Once fully lubricated, she would increase the speed, encouraging his erroneous belief that this Princess of Equestria wanted him to orgasm.
Her original command that he remain silent and immobile had not been rescinded. If she caught him squirming or trying to speak she would release his engorged member and slap it hard with her open hand. Fully engorged and already sensitized by the royal titfuck, the strike would feel like a hundred wasp stings. He would wince and reel back in pain, failing to follow her command to remain at attention. He would eventually stagger back to his starting position, where the princess would again bury him in her ample cleavage and continue pumping him.
She would lean into him, crushing her breasts against his crotch, working faster and faster until his tightening scrotum signaled he was ready to burst. At that moment, instead of allowing the release his body was screaming for, she would release his prick and stand up.
The unexpected denial of his orgasm would cause his body to convulse. Wracked with pain, he would groan and look pleadingly at his tormentor, whose only response would be a wicked, sadistic smile. Without thinking his hand would be drawn to his member in response to his urgent need. Immediately she would slap his hand away.
"Did I give you permission to cum, soldier?" she would scold angrily. He would force himself to attention, following the lead of his inflamed, throbbing manhood. A single rivulet of cum would escape his erection, dripping onto the floor in disobedience to the princesses command.
She would order him to kneel before her. She would speak then to him in the commanding voice of authority she reserved when issuing royal decrees.
"In this room you have no family, no rank or name. In this room you are my property, and you exist only to serve me. You will obey every command I give you and keep doing it until I order you to stop. Do you understand?"
Only when he acknowledged her complete authority over him would she untie her robe and let it fall to the floor leaving him face-to-face with her large, erect phallus.
She would pause and allow him to study it with a mixture of surprise, fear, and maybe even disgust. He would stare in disbelief at all nine inches of his royal highness' penis towering above him. A single drop of clear fluid formed at the top of the enlarged glans. The color would drain from his face as he realized the inevitability of what lay ahead.
She savored this moment of the cruel fantasy.
Satisfied he was ready to be dominated, she would take her cock and point it at his face.
"Your princess orders you to open your mouth."
Even though he knew it was coming, his eyes would still grow wide with shock.
"Princess," he would stammer. "I'm not.., I mean I'm married"
She cut him off. "Did I order you to speak?"
"No, your highness, but..."
"If you fail to please me, or refuse any of my commands, I will have you and your family banished from Canterlot forever. Do you understand?"
"Yes, your highness."
He closed his eyes and dutifully parted his full, moist lips. She reached out and pulled him close, burying herself in the confines of his soft, warm mouth. She held him for just a moment, savoring the complete possession of the man's body and spirit.
Sometimes just the image of a palace guard, the pinnacle of masculine power, being forced to swallow her royal staff would be enough to push her over the edge. The machine would change pitch as her fluids, and her carefully crafted fantasy, prematurely emptied into the glass jar.
But if she was in control of herself she would continue her subjugation of the man. She would fuck his mouth, sometimes gently, sometimes with vigor. If he started to gag she would pause for a moment, allowing him to regain his composure. She reminded herself that the guards were to be used, not abused, for her sexual pleasure.
When the moment of release was upon her, she would firmly pin the guard's head against her inner thigh. As obedient as these guards claimed to be, they would always flinch or try to pull away when the first couple squirts landed on their tongues.
She could remember the first time a man came in her mouth; it was bitter and slimy and she had almost spit it out. But that first time with the stable boy was different, because she had wanted to do it. Her younger sister had bragged about performing the same act on the same stable boy, in the same disused corner of the barn. Not wanting to be outdone by her sibling she had knelt in front of the boy and clumsily rolled him around in her mouth until he came.
But this fantasy was not youthful experimentation.
It was oral rape.
Only after they had resigned themselves to their fate and stopped struggling would she loosen her grip, reorienting their faces so she could continue ejaculating in a more comfortable position. When all her lust had been emptied into her servant, she would step back. Sometimes at this point the sound of the milking machine, pumping furiously to keep pace with the orgasm of the real Celestia in the real world, would intrude into the fantasy.
This time, the guard would remember his place, holding his mouth open for her inspection. She would see his tongue swimming in a puddle of thick, white cum. He would sometimes cough or make gagging noises as he fought to keep his airway clear of royal goo.
As her final act of degradation she would place her hand under his chin and lift. He would resist, as they all did, but she would tighten her grip as a reminder of her absolute authority. Then she would tilt the man's face upward until his eyes were looking directly into hers.
"Now swallow me," she would command.
And the guard, humiliated and broken, would obey. Overriding every reflex he would open his throat and allow her royal essence to slide into his gullet. For added humiliation sometimes she would demand he open his mouth again so she could verify his loyalty.
When she was done with him the traumatized soldier would dress in silence. The strong ones would dress quickly, their stoic faces trying to hide the total destruction of their dignity and masculinity. The weaker ones would sob uncontrollably in shame and self-loathing, struggling to find their clothing through a waterfall of decidedly un-masculine tears. On the way out she would stop him and plant a kiss on his cheek. She swore him to secrecy, although it was hardly necessary; who would ever believe a story about a princess of Equestria who was hung like a stallion and forced palace guards to perform oral sex on her and then swallow her royal cum?
Part 3, Sister
One of the naughtier fantasies involved her little sister. That first night, when they both still had their magical penises, they tried every possible combination of sexual roles and positions. Luna's more-human sized cock had not been able to friction inside Celestia, so the older sibling graciously offered her puckered rosebud as a tighter alternative. It had worked, stimulating her sister enough so she could find release, albeit on Celestia's face and voluptuous breasts.
Unfortunately, Celestia's much larger member was not compatible with her smaller sister's butt, so she was not able to reciprocate. But that did not stop her from fantasizing occasionally that Luna lay before her, her cute behind raised and beckoning. Luna would reach back and spread her cheeks, wordlessly broadcasting her willingness to be mounted from behind.
In her more loving fantasies, Celestia would lean in and touch the forbidden flower with her tongue. Luna would groan and push back, demanding more. Celestia would kiss and lick and drool over her less-used love hole, eventually working one of her long, delicate fingers into Luna's now well-lubricated anus. Then she would insert another, and yet another. She would work them in and out, loosening Luna's rear.
When they both were ready, Celestia would press herself against Luna. The younger sister would hesitate for a moment but then relax her well-lubricated rear, allowing Celestia's large shaft to penetrate smoothly and deeply.
For a long time they would rock back and forth. Luna's tight ass ring would stimulate her sister's cock while the long, hard cock massaged Luna's bowels. Celestia would share her pleasure by reaching around and taking her sister's magic prick in her hand. She would stroke it firmly in time with her own thrusts, feeling it twitch and swell as Luna became more and more aroused. The younger sister would plead for release and the older sister would provide it, milking her until all of Luna's fluids spurted onto the bed sheets. Luna's orgasm would tighten her asshole, in turn causing Celestia to achieve ecstasy, filling her sister with her warm juices. The two of them would stay joined together until Celestia deflated and slipped out.
Sometimes the fantasies about her sister would be more aggressive. At first Celestia would reject Luna's anal offering, instead making the junior princess service her orally. In this fantasy she was too large for Luna's mouth, so the submissive sister could only lick and slobber over the thick shaft. When she was ready, Celestia mounted the little princess, eliciting a whimper of discomfort as the saliva-lubricated member found its new home.
Celestia sodomized her sister with a masculine ferocity. There was no concern for her pleasure. While she would never hurt her sister, some level of discomfort could be tolerated, and in fact, desired.
She was driving hard now, thighs slapping against ass, the bed shaking with each lunge. Luna's face was contorted, hoping the violent sexual act would end soon.
Celesta, however, wanted the elicit thrill of anal intercourse to go on and on and on. But the male part of her screamed to finish the act, to achieve the ultimate possession of her sister. As she felt her body tightening she slowed her pace but lengthened her stride. At the moment of greatest urgency she would throw herself onto Luna, burying her cock as deep as possible in Luna's behind. Celestia would thrust and rut until every last drop of cum had been spent.
But today Celestia, co-ruler of Equestria, decided to go with the palace guard fantasy. He would be of medium build, with curly brown hair. He would be married with two small children. His wife would be the maid who changed the sheets in the royal bed chambers. She might or might not suspect anything...
Celestia waved her hand over the machine. Another spark of magic leapt from her fingers and the suction, release, suction, release became faster. She closed her eyes and the guard, knees shaking, was disrobing before her.
Maybe the day wouldn't be quite so bad, after all.