Royally Screwed

Spike's cocks were enormous, beyond huge, so big that they were intimidating. How could a dragon so small have dicks so large? They were completely out of proportion and borderline preposterous, how was he going to wield those things? How were the princesses going to take them?!

Celestia and Luna were still on their knees either side of Spike's crotch, though their eyes were wide, their faces were overshadowed by two long and thick throbbing dragon cocks. Cadance was the first to speak up "Oh my goodness, Spike those are... your equipment is um... what I mean to say is that those are... impressive".

Luna spoke up next "Impressive? They are fucking massive is what they are!"

Celestia, being the most sensible of the three said "Now now ladies, we are here to show Spike a good time, so let's pull ourselves together. Spike, what would you like us to do?"

Wow, Spike wasn't expecting to be put in charge. Even though he was given free reign to do whatever he wished, he didn't want to push his luck by asking for a blowjob or anal, this was meant to be a professional agreement when all was said and done, so he decided to just tell them positions and then go to town on their pussies.

Spike said "Okay Celestia, you lie down on your back in the bed, Luna, you climb on top of her, Cadance... well, I only have two so, do whatever makes you feel comfortable I guess". Cadance wasn't entirely happy with that answer, but accepted it anyway. Celestia and Luna however were blushing in ebarrassment, the position that Spike had requested meant they would be very close to each other, it felt rather too... intimate. Celestia made the first move and lied down face up on the bed and spread her legs, waiting for her sister to move into place. Luna, somewhat reluctantly, moved in between her sisters legs until they were face to face and, as Spike had intended, pussy to pussy.

Spike licked his lips, this was simply too delicious a display to resist. He moved up behind the princesses and aimed one of his cocks to each of their pussies, might as well kill two birds with one stone after all! When he was perfectly lined up, he heaved his hips forward, penetrating the royal sisters simultaneously. All three of them let out loud moans of pleasure, Spike was enjoying the immense heat and tightness of virgin pussy while Celestia and Luna were enjoying the feeling of Spike's uniquely shaped cocks rubbing against the walls of their inner most depths. Spike grit his teeth and with his hands pressing into the bed, started thrusting, driving his dicks deep and deeper into the two ruling monarchs of Equestria. If this was a dream, he didn't wanna wake up.

As he delved deeper into the princesses holes, he could actually feel his dicks rubbing against each other through the bulges he was creating on each of their stomachs, when he had finally driven botch cocks in to the hilt, the bulges had just reached the lower curve of their breasts. Spike began thrusting, his inner dragon instincts kicked into high gear and he began fucking with no mercy, the bed creaking as the power of his reptilian muscles rocked it back and forth. As Celestia and Luna squealed like teenage girls on prom night, they felt their breasts squished together with their pussies only just touching and as they momentarily gazed into each other eyes a haze of lust filled their minds, prompting them both to mutually agree to "fuck the rules" and embraced each other in a passionate kiss.

Cadance was flustered, this was such a sexual and depraved display, incest was a kink she had kept hidden, mostly out of shame. However, in that bedroom for this brief moment, she could take part if she so wished. Celestia and Luna were her adopted aunts after all, plus she knew a little spell that might make said interaction a little more... interesting. While Spike was ramming the living daylights out of the two sisters who were busy making out with each other, Cadance lit up her horn and focused magic on her crotch and after a quick burst of light she had fashioned an accurate stallion cock in place of her vagina, good for one ejaculation before it disappeared. Cadance got in on the action by making her way over to the bed and getting on her knees in front of Celestia and Luna.

"Hey, Auntie Luna..." said Cadance. Luna briefly pulled herself away from her sister and barely had any time to react before a stiff pink girl cock was pushed into her mouth and down her throat. Cadance let out a sigh of satisfaction, deciding not to thrust, she simply held herself there and let Luna suck it while Celestia leaned her head up to take Cadence's fat nut sacks into her mouth.