Goldilocks rested her arms on the railing, looking out over the city just as she had the day she arrived. In the distance, the romanesque city in the clouds was awash with color, the fireworks painting the white cloud and marble with their light.

Gaius was impressed, as it was rare for him to be awake after dark. He had never seen fireworks before, and was a little wary at first, which Goldie thought was cute.

Guy was no Alicorn, but still a little larger than Princess Twilight. Standing next to him made Goldie feel small, and she wondered how her presence made him feel.

She decided to test it by rubbing up against him, her tiny bare shoulder against his muscular one. His coat was soft, and she couldn't resist placing her other hand on his chest. His dress-uniform was unarmored, consisting only of a white cap with the image of the sun on the front.

He didn't budge but didn't protest either, and she could feel his muscles tense, then slowly relax. She stole a peek behind her and saw his cock hanging low. As if responding to her gaze it began to expand more rapidly, reminding Goldie of air filling a long balloon, like the kind used for making balloon animals.

She knelt down and cupped his nuts in one hand, the light touch of her delicate fingers sending faint shivers through him. Goldie liked the way his balls felt in her hand, lifting them and letting them down as though weighing a purse of coin.

"Goldie, what if some-pony sees?" said Gaius, shakily.

The thought certainly was exciting. At least, it was for her, and Guy's embarrassment only made it more so.

Still holding his balls, she slid her other hand along underneath his penis, feeling its heft and applying more strength as she went along, raising it so that it was parallel to the ground.

She grasped it, unable to wrap her fingers all the way around, and slid her hand back and forth along its length, twisting her grip like a wrench on the flesh behind the flared tip, and feeling the bulge of his preputial-ring on each pass.

Gaius flicked his tail, his back leg twitching. He was sure they were being watched, but there was no-pony around that he could see.

Goldie stood up and walked back to the railing, leaving him hanging. At first, he thought that it was over and he would have to spend the rest of the night aching and wondering, but then the girl removed her heels and dropped her panties down to her knees, stepping out with one leg and bending the other behind her as she slipped them off, then dropped them to the side.

She let her dress fall and stepped out of it, setting it aside as well as her shoes. She then returned to the railing, hooking her breasts over it and standing on her toes, spreading her ass.

Gaius nearly lost his breath watching her, never expecting to receive such a show, especially from a human.

She remained there, waiting for him to accept the invitation, which he did at last, stepping up behind her. She could feel his hot breath on her back, then noticed his hooves on the railing beside her hands.

She gripped the guard rail tightly, her breasts weighing her down over the edge of the balcony.

He rested his enormous cock on her back, then started to push and pull it up and down, dragging it between her shoulder-blades while his massive, laden balls slapped against her ass.

He pressed the flared tip of his cock against her anus and stopped, noticing that the the tip was far wider than the entrance. He took a step back, deciding to place it between her thighs instead.

She gasped as it tickled her belly, sliding up to her chin, the tip occasionally prodding the undersides of her breasts as he pumped.

Her pussy wet the top of his cock as it sawed at her legs, the flesh of her vulva stretched and tugged, his member scraping her clit as though trying to sand it down.

Her heart raced, the city below seeming to get further away, yet the fear of falling somehow invigorated her.

Before he reached the point of no return he stepped back, pressing his cock against her yearning pussy.

Goldie waited patiently, but her mind was restless.

C'mon, go for it.

As though detecting her thoughts he finally made the attempt, struggling at first to shove it in. He grunted with effort and she moaned as her impossibly-tight lips were pried apart. She yipped when at last his cock popped inside.

Only the head was in at first, but with each subsequent thrust he managed to jam a little more, pushing her insides out of the way in order to accommodate him. It was a bit like driving a stake, but he was persistent, carving a rut inside her for his dick.

Eventually her ass was high in the air and she had to reverse her grip on the railing to keep from falling as he did his best to fuck her off the edge, shoving the flat head of his horse-cock against the entrance to her womb while her tits dangled above the rooftops of the common district.

Behind them the party carried on, and a certain shadow had halted its pursuit to watch the curious, slightly horrific display.

Goldie had cum twice by the time Gaius finally did. In shivering pulses he flooded Goldie's womb, his thick semen delivered directly inside, each spurt like a cannon shot. So massive was his payload and so tight the fit that her belly swelled to accommodate.

She was stretched over his penis like a warm sock, and had to reverse her grip again as he tried to pull out. It was like popping a cork, semen spilling out like foaming champaign, the fireworks punctuating their finale.

Author's Note

Took longer to finish this one than expected, and I procrastinated a little. I was going to include more story elements, but figured they could wait until the next chapter.

Edit: Thanks to user ‘duithy’ for pointing out an error, which has now been fixed.