Lavender was the night sky outside the nearby bedroom window. A huge moon hung in the sky. It made sense, since these ‘little ponies’ as they call themselves seem to be everything bigger in general. It was funny they call themselves ‘little ponies’, for they were anything but little.

Speaking of the moons, the horse standing next to a huge dark blue, love heart shaped bed had a very big moon of her own. The room you were in was dimly lit with a few hanging candles.

You, the human, in only your underwear stood a few feet away from the bed, scratching your neck. You were quite nervous about this thing you agree to do with the huge shire horse sized alien horse known as Princess Luna. She was big… way bigger than you.

This mare’s backside was truly gigantic. It was thick, meaty and wide, each cheek was an oversized, bulbous balloon of soft, jiggly flesh, supported by a pair of powerful, thick hind legs. She was a truly terrifying monster of butt. You were a tiny, insignificant little ape when compared to her mighty size.

“Thou must remember this is just friends spooning ape. If thou does anything inappropriate to us whilst we sleep we shall cast thee beyond the galaxies horizon.” she threaten, in a harsh voice.

You simply gulped, briefly eyeing the door, considering backing out of this.

Luna gasped in horror, bringing a hoof to her mouth in quick session over what you just did.

“We saw that! she roared. “You are going to spoon me my little ape friend! There is no escape!” she said angrily.

You sighed in defeat. With that you made your way to lie down on the bed. Luna then followed suit, bringing her absolutely enormous backside to completely dominate your vision.

You stared in fear at the huge mare’s butt taking up your vision. Before you stood two monstrously large dark blue cheeks, that would make any big fat ghetto girl cry with envy.

You simply stared in wonder at the amazingly sexy booty that was before you, your cock twitching hard in your underwear at the sight of it.

“Spoon us ape!” she demanded.

You gulped. As to not anger her further, you quickly moved over to press your body against hers. Your fully erect member now poking dangerously close to her marehood.

“Uh… sorry Luna.” you said in a low voice.

“We are not a foal Anon. Thy tiny, pathetic phallus poking Our backside does not bother us.” she said softly.

You sighed in relief. “Wait! What?!” you shouted angrily.

Luna simply snorted in answer.

“To make sure thou don’t go anywhere. We are magically binding thee to our buttocks for the night.” Your body glowed briefly with an azure glow. “Now, let us sleep. Don’t wake us up, or there will be trouble little ape.”

Nothing eventful happened for quite some time, your eyes became heavy as you began to drift off to sleep. However, something interrupted your progress into the sleeping world. Something horrible.

“PPPPPHHHHHHHRRRRRRRRTTT!” came a loud sound right in front of you… along with a terrible stench, straight from the bowels of hell.

You coughed, trying your best to recover from Luna’s smelly fart. The noxious gases of her backside smelled like a fish market, combined with an open sewer and general shitty smells.

“PPPPPHHHHHHHRRRRRRRRTTT!” came another dirty fart, this one more powerful than the last.

This time you tried to pull away and get out of the bed. Unfortunately, her magic glued you to her ass, ensuring that you were trapped with her smelly farting butt.

“PPPPPHHHHHHHRRRRRRRRTTT!” came another fart.

You closed your eyes, trying to keep your mind off her farts. But it was no use.

Fart, after fart blew out of her ass. Her consistent farting was more than enough to kill your boner.

You cried silently has Luna’s ass relentlessly continued to unleash foul smelling farts upon you. Nonetheless, you were willing to endure these terrible farts if it meant you could live another day. This mare was scary, and it was a bad idea to piss her off. So, you dared not to wake her up.

The room became engulfed with the foul smells of Luna's farts. Her ass showed no sign of stopping. Her farts came frequently and consistently without stop.

You hoped that her sister would come to your rescue from this terrible torture you were enduring. But to no avail.

Hours passed, her ass continuing to unleash its mighty and terrible farts upon you. Eventually the morning light began to shine into the room. But by that time your eyes were horribly bloodshot, for you didn't have a single wink of sleep.

Luna stirred, making a quiet whinny, before speaking. “Did thou sleep well?” she asked softly.

“Uhhh… no. Your farts made sure of that.”

A bright red blush came upon Luna’s face. “..... Oh. We’re most sorry Anon. Maybe, this was a bad idea.”

“Yeah, I think you killed my boner for life.” you said bitterly.

“Nonsense! We shall cast a spell to make Our farts smell like bakery fresh cinnamon rolls next time.”

“That, or you could perform a noise mute spell on me and make me not smell anything for the night.”

“We shall take that into consideration next time. Regardless, thou have proven to be a true friend by enduring my butt’s farts all night long.”

“I have?” you asked in a bewildered tone.

“Yes, thou has proven to be a noble soul. Enduring a pony's farts without complaint for a whole night is one of the most romantic things one can do."

“Your culture is weird.”

“So, will thou be our special somepony.”

“Sure. As long as I don’t have to endure that nightmare again. I’m not sure if I’ll like pony asses again after enduring these farts.”

“Heresy!” she roared, rapidly growing even larger, her butt expanding in mass along with it.” Just for that thou are going to get an even bigger mare to please with thine small penis!”

Luna's already massive backside assumed greater and greater size, expanding out like a balloon. By the time she had stopped growing she was literally twice the size then she was before.

Such was the the expansion of her body her butt had nearly pushed you off the bed.

“Get worshipping puny ape!” she demanded.

The End

Author's Note

I'm really sorry about this one.

Apparently, horses fart a lot in their sleep.