Moonrise
"G-god, yessss!! F-fuck my wet cunny, you man-whore!"
You were used to hearing this every afternoon at this point. Your entire world was shaking as Princess Celestia rides your cock like a wild horse, the sounds of loud, eager moaning filling her bedroom. The chain attaching your leg to her bedpost rattles, her giant pillowy royal ass plapping down on your lap with every rough bounce. She was much taller than the rest of the ponies you've slept with, but her weight and intimidating size was something you had also gotten used to. You've been acting as Celestia's royal boy toy for a month now, ever since she caught wind of the blowjobs you had been receiving from Twilight and her friends. This was considered your "punishment."
"F-fucking SSSHIT!!! CUM INSIDE ME AGAIN, YOU STUD!!" Celestia begs you, staring into your eyes, her tongue hanging out loosely as she grinds her hips into your pelvis, clenching her vagina muscles around your girthy human cock.
Royal sex can only be so mind-blowing a couple times before you start getting weary, and this was the 100th time in the last month the sun princess has milked your balls dry. You've fucked her sunbutt almost every position known to Equestria, and you haven't seen a world outside her bedroom in the longest time. Celestia lets out a loud cry as you both cum, filling up her pony pussy with another thick load of human semen.
You shoot another 5 ropes into her before you and the princess settle down into each other's embrace. Celly cuddles you for a brief moment more before climbing off you. She pats her coat down, fixing her mane before looking back at you, damn near passed on her mattress. The sun princess giggles and gives you a wink that tells you she'll be back soon. As the doors to the royal chamber close, you close your eyes and drift off, completely exhausted from the hours-long service.
...
Your eyes slowly part as you awake. Damn. You've lost track of time, it's already night. There was a heavy, squishy mass on top of your chest that you couldn't make our through your blurry post-sleep vision. You let out a groan, rubbing your eyes, expecting to see Celestia back to sit on your face. Your eyes widen as you find yourself face to face with the curious gaze of Princess Luna, her bright eyes staring deep into yours, piercing your soul. You let out a startled yelp, before a dark blue hoof covers your mouth. Luna was laying on top of you, her lean stomach against yours and her soft flank resting on your lap. Celestia was nowhere to be seen.
"Shhhh... My sister left the castle on royal business an hour ago. I don't know when she'll be back." Luna explains, keeping her soothing voice to a calm whisper. She removes her hoof from your lips and allows you to speak.
"What are you doing here? Thought you didn't have any interest at what she did with me..." You ask her, remembering being blocked by Luna after Pinkie forwarded that picture of her with your cock in her muzzle to everyone in your phone.
"Yes, that was my initial opinion on the matter. But... I would be lying to you if I were not.... curious, at the least. These last few weeks, I've been able to hear almost everything that happens in this room," The moon princess admits, a deep blush slowly forming on her cheeks. Her eyes lid slightly, and a sense of nervousness filled them as you stare at her. It was at this point you realize just how pretty Luna was up close.
"S-so..." Luna begins to ask you. "...Do you mind if I can try it?"
You let out a nervous sigh and nod your head yes, giving Luna permission to explore your human anatomy. Luna flashes an excited smile as she shifts her body down so that her head was facing your pelvis. Her horn glows as she uses her magic to remove the sheets you were previously using to clean and cover your junk. The princess of the night lets out a small gasp as she gazes down at your penis, completely and utterly fascinated at how different it looked from a pony's.
Luna rubs her face against your dick, giving it experimental sniffs, the scent of your musk making her perk up. Her breathing was getting rougher, her blue cheeks a deep red. The pony princess looks back up at you, lidding her eyelids and hitting you with the most seductive stare she could muster. You both giggle a little, but you immediately tense up as her soft, wet pony tongue slides up your erecting human penis. You grip the bed sheets tightly, hissing as your meat stands at attention, Luna's long tongue sliding from base to head, swirling around your mushroom tip and smacking her plump lips around it.
"W-wow... I never thought... humans could taste s-so good..." The moon princess whispers lustfully. She was letting the heat think for her at this point.
You let out a quiet growl as Luna positions her muzzle over your cock and opens her mouth wide, a hungry moan escaping her throat. You watch your prick get engulfed by the royal sister, closing your eyes and tilting your head back in pleasure. Luna bobs her head up and down as she sucks on your dick tenderly, moaning around it, wrapping her slimy tongue around the shaft and tasting it thoroughly.
You stare down at her as the princess worships your cock, reaching down and petting her head and mane as waves of ecstasy move through your spine. You bite your lip, holding back groans as she slurps and laps over that long thick rod, coating your crotch in her spit, getting faster and sloppier by the minute. Luna's hot muffled moaning was like music to your ears, the sight of such a respected figure turned into a horny cocksucking slut turning you on immensely.
"Mmmmphhhh... slurrrpp, shlick, pop, gluckkk... Aahhllmmmmm~..." The sounds of Luna's sloppy BJ filled your ears.
You push her head down and growl louder, gently thrusting into her throat, making the tall blue horse choke on you. Luna rolls her eyes back and goes completely feral on your cock at this point. The princess groans loud and eagerly as she slurps and slobbers all over your throbbing shaft, leaking drool from her lips all over your ballsack. That tight wet pony throat squeezed around your dick so perfectly, making your toes curl in pleasure as your hips slam into Luna's muzzle. After a month stuck with Celestia, you needed something like this, something different...
Your screams of pleasure become more guttural, feeling Princess Luna swallowing around your cock, the most sensitive areas sliding back and forth on that pillow-soft horse tongue. She looked like such a cockslut in this moment, her round, perky rump shaking and bouncing in the air playfully as she devours you. Finally, unable to take it anymore, you grab Luna's ears and bring her head all the way down onto her crotch, hilting your cock deep in her throat. She starts to tear up and choke, looking up at you, pleading for your load with her eyes.
"O-oh God... FUCK, PRINCESS, I'M GONNA-" You cut yourself off with a loud orgasmic cry as you cum, empting your balls inside her incredible maw.
Luna closes her eyes and gulps down mouthfuls of cum steadily, moaning at the taste of your creamy virile seed. You thrust your twitching shaft up into those juicy blue lips every spurt, laying your head against the pillow and watching as the moon princess swallows the last your balls had to give. Luna slowly pulls her mouth off of your cock and lifts herself up, licking her lips and letting out a satisfactory sigh. She looks down at you and smiles, giving you the same wink Celestia has given you.
"V-very... very good. Don't tell my sister I was in here... okay, handsome~?" She giggles as she gets off the bed and makes her way out of the room. You reach out and call out to Luna before she can leave.
"WAIT! You sure you can't get me out of here?" You ask, still holding onto the hope that she was more forgiving than her big sister. Before the door closes and you're left alone in the dark once more, Luna just smiles and looks back at you while she walks away.
"I wish I could, dear... but we are not done with you quite yet."
To be continued...