Author's Note
This was probably one of my favorite stories I've ever been requested to write. I hope you guys like it as much as I liked writing it.
HAPPY CLOPPING! 
Servicing The Princess
"Where is he?... He said he would be here after I was finished raising the moon..." Luna said to herself as she paced back and forth on her balcony. The night was rather cool, nice enough to wear light clothing. In Luna's case, she wore a lovely dress that showed off her full curvaceous figure perfectly.
Her massive D-Cup breasts nearly spilled out of the top, and the night air caused her nipples to become erect. She ran a finger over one of them and moaned lightly as a shiver went down her spine. It had been many moons since she had felt the touch of another. She began to lightly squeeze her breast and shuddered more. Her actions began to cause something else to stir within her.
She removed her dress, letting her breasts hang free of their fabric prison. As the dress fell to the ground, Luna's full figure shown with great beauty in the moonlight. She reached behind and squeezed her massive rump, panting as a blush formed around her face. She pulled down her panties and let out a throaty moan as her cock dangled freely. Nestled just between her legs were a large set of testicles, plump and filled with seed. She gave one of her massive orbs a squeeze and moaned as her flaccid member shot a glob of precum just between her feet.
She bent down and scooped up the glob with a finger and took a deep whiff, savoring the sweet musky scent of cum. Her cum... She stuck her tongue out and licked her finger clean enjoying the salty nectar she had just produced. This caused her cock to slowly harden, dripping pre with each soft pulse. She moved her hand down and slowly stroked her member, feeling up and down her shaft until it was a full sixteen inches her cock felt almost smooth in her hand she kept stroking up and down feeling every vein and stopping at her medial ring, biting her lip as she pinched a nipple with her other hand. She stepped forward and blushed as she felt her balls, having expanded in size along with her erection, slapping against her thigh, filled with what seemed like gallons of hot seed sloshing around in those massive orbs of flesh.
"By the light of the moon... I need release..." She made her way over to a couch she kept outside for when she wanted to lay out moon during some warm nights and sat down. Her cock stood proudly rubbing against her breasts as she leaned forward to get comfortable. Each movement caused her massive rod to spurt more and more pre, forming a small puddle at her feet.
She would never resort to masturbaton, but she was desperate. Besides, he wasn't here yet. She sat there, fondling her breasts while her cock bounced between them, coating her massive mounds in a wet layer of precum making them slick. As she did, she remembered when she met the one in question who was coming to help her.
He was slightly tall with a skinny build, but he had a sense of pride and dedication along with a few "other" endowments that would even put Shining Armor and Flash Sentry to shame. She remembered when she swore in as captain of her royal guard.
"Lt. Stardust, in your time serving under the Royal Night Guard, you have on multiple occasions proven worthy of a great leader. It is with my great pleasure that I hereby promote you to the ranks of captain. Your job, is to make sure everyone falls in line and most importantly, to protect and serve your princess." She said as she awarded him his ranks.
"Your highness. I am honored. As captain, I will hereby make sure my subordinates fall in line, and most importantly, I will do anything to protect and serve my princess." Stardust said with a salute. Luna bowed her head and he turned and marched back to his barracks to move his stuff to the captain's bed chamber. As he did, she stared and got an eye full of his tight rear.
She placed a hand over her crotch and felt her cock start to harden. She was fantasizing about letting him rut her senseless. Then she thought of something else...
"Captain Stardust?" She called after him just as he was about to head out the door.
"Yes my princess?" He turned and she blushed. She took note of the massive bulge in his pants. Nowhere near as big as hers but definitely bigger than Shining Armor.
"Tonight, I want you to join me in my chambers. I want to properly award you on your new promotion..." She said with a wink as she walked past. "Right after nightfall..." Stardust felt his cock start to harden. Luna had been his biggest interest since he joined the Royal Guard. He often found himself staring at her glorious tits and ass as she walked by. He even eyed the bulge she kept hidden under her dress, fantasizing about her giant cock bouncing up and down while she rode his until sun up.
"Captain? Is that fine with you?" Luna spoke. Stardust snapped back into attentiion and saluted. "Y-yes your majesty!" With that, he quickly walked off. Luna smirked. She had something very special planned for him.
Luna snapped back to reality as she felt her cock start to jerk, spurting precum all over the floor. No matter how hard she tried, she couldn't bring herself to the orgasm she needed. It was starting to hurt and her balls were starting to strain from all of the cum she had stored up.
Luna huffed and stopped masturbating. "By my full moon! Why can't get release!" She shouted. Just then the door opened inside. Stardust walked in looking around.
"Princess Luna? Your majesty are you here?" He asked. Luna entered her bedchambers seductively, her massive breasts and her large soft gorgeous ass jiggles with each step. Her cock bounced along leaving a trail of precum behind her, her balls, now grown to the size of softballs slapped against her thighs as she walked.
"Welcome captain... Now that you're here, we can finally begin..." She said as she laid down. Stardust's jaw would have hit the floor if it wasn't attached to his face. The erotic sight caused a strain in his pants as his cock started to harden and throb.
"Y-y-your majesty..." He said with a salute, shaking slightly. Luna giggled at his attempt to maintain his composure.
"Captain why don't you go in my closet and slip into something comfortable? I picked out a special outfit to wear..." She said as her cock started to twitch. "Then we can have some real fun..." She winked at him and squeezed her breasts.
Stardust saluted and obeyed. "Yes my princess!" He entered the closet and looked for the outfit she said she picked out. But all he saw was a maid's outfit. Then it occurred to him. "Wait... I'm supposed to wear this?" He asked himself. The outfit was nothing more than a maid's dress and a pair of lacy black panties. He put the outfit on and looked in the mirror and his eyes widened. He actually looked really sexy in the outfit. His erect cock stuck out of the front of the panties while his balls were nestled right inside.
"Captain it is not wise to keep me waiting." Luna said. Her voice caused him to stop eyeing his figure in the mirror and at that moment he realized how foolish he looked. But no matter what, he took an oath and by Celestia's non existent beard, he was going to keep to that oath! He slowly made his way out and tried to avoid her gaze.
"There... Isn't that much better?" She said standing. Stardust was enjoying this. But he didn't want to admit it. Part of him was thinking this was some sort of test.
"Y-yes my Princess" he said sheepishly. Just then, Luna stood right In front of him, her cock slowly rubbing the underside of his balls.
"Now... Captain what is your priority?" She asked. As foolish as stardust felt, he was still captain of the guard and acted as such.
"To protect and serve your majesty!" He said with a salute. Luna smirked with her lustful gaze.
"That's right captain... To protect and serve me..." Just then her horn and eyes started to glow, and Stardust suddenly felt heavy. Whatever she was doing to him was causing his mind to go blank. His cock twitched at the feel of her magic through his body, and his anus started to feel hot.
"M-M-my princess.... W-what are...." She put a finger over his lips and looked in his eyes.
"I've seen the way you look at me... Eyeing my royal derrière, and my bust, not to mention my "personal" endowment... I know what you want..." She moved closer to him once more, causing him to fall back onto the bed. "Now it's time you put your royal oath to the test captain..."
Luna got down on her knees and spread Stardust's legs wide, causing his cock to stand up straight. She took his rock hard member in between her massive mounds of tit flesh and began massaging it while sucking on the tip a bit.
"Here's what's going to happen... After many moons of not getting the release I seek, I had to choose someone to be my personal "pet" to service me... It just so happens that you're perfect." She said as she gently squeezed his balls.
"B-but... L-Luna... What about the-" Stardust started to speak but was soon stopped as Luna flipped him onto his stomach and pulled his panties down.
"You will resume your duties as captain during the day. But after nightfall, you are expected to be here every night. Understood?" She said as she spread his cheeks apart revealing his sweet sexy anus. "This is quite beneficial for the both of us I think.... Wouldn't you agree?"
"I g-guess so... But a-ahh!" His words were cut off once again as Luna started rimming him. Licking his tight pucker until it was nice and slick.
Just then, stardust tensed up. He moaned loudly as his cock started to spasm and shoot his seed all over Luna's bed. His body shook and his tongue rolled out as his eyes went into the back of his head. Stardust had just been given the most amazing orgasm in his life. Luna was a bit jealous but it was worth it for what she was about to do next.
"Oh such a naughty pet... Do you realize what this means?..." Luna said as she licked his cock clean.
"H-Hnnh..." Stardust was in a daze. He couldn't think straight. His mind was still under her control.
"This means that I get to use you as my personal fuck doll as long as I want..." She said as she stood. She propped his ass up in the air and started rubbing her cock between his firm buttocks making it even slicker with her pre. "Now beg me captain... Beg me to fuck you..."
"Mmmm please my princess.... Please fuck me. Make me your fuckdoll.... Wear me as a royal cock sock.... Fuck my tight little hole and fill me with your seed! Please my princess I need your cock! I want to be filled with every inch of your lovely cock!" Stardust whimpered as she teased him.
"Very well... My pet shall have his wish" Luna gripped both of his ass cheeks and slowly inserted her cock into his ass. She gasped and moaned as she pushed every inch of her thick veiny member into his soft velvety walls. As soon as she completely hilted herself inside, she held it there, letting her tongue roll out as Stardust's anal cavity flexed squeezed around her member. Each squeeze caused her cock to spurt pre into him quickly filling and causing his belly to budge out slightly.
At that moment, stardust had completely forgotten about military protocol. He moaned loudly as the princess filled him with her cock, and quivered as he felt his belly bulge out.
"Yes princess! Please fuck me! Make me your bitch in heat!" He screamed out as Luna slowly started to hump him. Her balls making wet slapping sounds against his own, making the experience all the more erotic. Luna squeezed her breasts as she kept thrusting in and out of him.
"Mmmm my pet loves to be fucked doesn't he? Do you love to be fucked by my royal cock pet?" She moaned
"Yes! Yes my princess! I love your royal cock! Fuck me! Harder! FASTER!" He screamed out as she kept thrusting. She was starting to get closer and closer to her goal. Finally she was going to get the release she needed so desperately.
Luna started to speed up her humping, leaning forward and stroking his shaft. "You love to be fucked like the femboy that you are my pet? Do you?" She said as she humped faster and faster.
"YES YES I LOVE BEING FUCKED LIKE THIS! I LOVE FEELING YOUR COCK IN MY ASS! I love you LunAAAAAAAA!!!!" Just then, his body spasmed as his cock shot out another wave of cum all over the bed.
"Yes! It pleases me that my pet is satisfied!" She thrusted hard several more times then tensed up and screamed loudly as her cock shot rope after rope of thick cum into Stardust. Each glob of cum she shot into his ass caused his belly to swell up even more.
"YES!!! YOUR PRINCESS IS PLEASED!" She screamed as her orgasm overtook her. She kept humping furiously as her cock continued to shoot load after load. After what seemed like ten minutes, Luna's orgasm finally died down. She stepped back from Stardust, her now soft cock sliding out of his anus with a wet vulgar 'pop' leaving his belly bloated with her seed, making him appear to be pregnant. She collapsed on the bed next to him as he laid on top of her, resting his head on her massive breasts.
"You have pleased your princess well captain... I hope I can count on you again to service me in the future..." She said as she hugged him closely.
"A-anything you wish M-my princess...." Stardust said as he drifted off to sleep.
Luna followed soon after. Finally satisfied that she finally got what she wanted, and then some.
