Ponies worship Applejack, the gigantic hypercocked goddess of the harvest, so that she will fertilize their fields with her bountiful cum.

Applejack smiled down at her worshippers. They must have numbered in the thousands, their tiny little forms grinding against her cock with all of their might.

She couldn’t actually feel them against her shaft, oh no. They were much too small for that. A pony made little physical impression upon a goddess whose head reached the very clouds themselves. But it wasn’t their actions that counted - it was their worship. Their belief. Their faith. And as they prayed to her, devoting their souls and bodies alike to her continental cock, she felt her balls begin to churn and swell.

Their growth was slow at first, but soon each was expanding fast enough to swallow up whole villages every minute. Applejack just grinned, closing her eyes as the immortal sense of growth filled her. Just like the idea that she represented, her growth was a fundamental part of Equestria, and nothing pleased her more than to feel herself spreading across the earth, bigger and bigger with each passing second.

As the prayers of her worshippers filled her mind, and her balls filled with heavenly seed, Applejack reached out and placed either of her hooves onto the base of her shaft. Slowly, surely, her hips pumping with each stroke, she began to work her cock. Its every throb shook the land, her every pump swelled it a little larger, a little harder.

Like a farmer preparing her fields, Applejack worked her stallionhood in long, sure strokes. A long, low moan echoed out across the plains. The goddess of growth was growing. Her rump, her legs, and - most importantly - her cock were spreading out across the land below, her followers being swept up beneath her divine body. The magic that sustained her would keep them safe, but only their self-control could keep them from arousal. To pleasure oneself beneath the body of the Goddess was a heaven that many pilgrims aspired to.

Applejack continued to work her titanic tool, her hooves rubbing from the base all the way up to the medial ring. Her stallionhood was so enormous, even relative to her, that that was as far as she could reach. It towered above the countryside for nearly a mile, and stretched for more than four times that length. A large river of precum was already beginning to “drip” from her flared head, but that, of course, was nothing compared to what was to come. The reservoir of pre would nourish the immediate area for a time, yes, but the true purpose of the ceremony was something far greater.

An awful, yawning groan began to rumble through the earth as Applejack’s divine balls swelled and sloshed and churned with holy, fertile seed. With each thump of her hips, the giantess left enormous craters in the earth - craters which would no doubt become new holy sites, given time.

And then, with an awesome, shuddering gasp, Applejack’s strokes ceased. A bulge had swollen up at the base of her cock, and all of the countryside held its breath as, ever so slowly, it made its way up the shaft, until -

- it exploded.

An ocean of cum flooded out over the countryside. The farmers and pilgrims alike cheered as the fabled Divine Orgasm burst from the stallionhood of the Goddess, a wave of thick, creamy white nearly a mile tall washing out across the world.

It was a tsunami of cum. Most settlements in its path would have been damaged or destroyed, save for the spellwork of the priestesses of the harvest. So instead of worrying about her subjects, Applejack just grunted and humped the earth, her balls sloshing and her dick putting out wave after wave of life-giving cum.

Her seed would spread across the Equestrian countryside, bringing new fertility to the fields. Like the shaft of the Goddess, life would grow here once again, and another year would bring another golden harvest.

As her orgasm ceased, after a good hour of cumming, Applejack smiled to herself. Once again, prosperity was assured. The earth shaking beneath her, she slowly stood up, drew herself up to her full height, the highest clouds swirling around her shoulders, and turned toward the horizon, her dribbling cock leaving new lakes of cum with every step.  

And once again, the ponies rejoiced.