The Trade.
A stallion walks towards the Pie Family Rock Farm with a saddle bag on his back, and a possible item of interest for somepony there. This little trip all started with idle chit-chat among friends, rumor has it that a mare who works at this rock farm is a passionate Geologist that loves to collect all kinds of rocks and minerals, and always pays handsomely for ones she doesn't own herself. It just so happened that this particular stallion has a sister that owns a tourist trap near a naturally formed canyon that specializes in quartz and gems from said canyon, she would often send some cheap but still pretty stones from her store to family as gifts around the holidays. So instead of letting the useless rock gather dust at his house, the stallion figured he would try and sell it to make some extra bits.
After a long, boring walk he finally reaches the farm. The first noticeable thing about this rock farm is that there is really nothing to notice, the young stallion isn't too surprised about this, its just a rock farm. With a little looking around he finds a lone mare working near a barn. Quickly trotting to go talk to this pony, he speaks up as soon as he is in ear shot of her.
"Hello there!" Said the stallion as he got closer to the mare with a gray coat and purple mane. "Would you happen to be the pony that buys rocks and what not?"
The mare stared him strait in the eyes with a blank expression and said "I do buy rock... But not what nots... I do not even know what a what not is..."
Not really sure how to take what she just said, the stallion just pulled out a gem from his bag and handed it to the mare.
"I'm sorry I just realized I never got for your name, may I ask what it is?"
"Maud..." Is all that she says as she inspects the item that was just given to her.
(Is that it? well it's not as bad as my name.) Thought the stallion.
Soon Maud gave the gem back and said. "I will buy this sediment from you..."
The stallion didn't really know what a sediment was, but he heard her say that she would buy it from him so he was happy.
"Come with me... And I will trade what I have to offer for it..." stated Maud.
The stallion was a little worried after she said trade, all he wanted was some money for the dumb thing, not to replace it. At the same time he knew his friends wouldn't talk about this if all they got was more rocks. He decided that it was worth at least seeing what she has, perhaps she just uses the word trade as weird way of saying money. The stallion didn't think it too odd that this mare just phrases things poorly. So he began to follow her.
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In a matter of minutes the two were behind a big and long boulder that looked like it stretched out about ten feet wide and six feet tall, almost like it was just a wall out in the middle of nowhere. Maud was standing near the its center and started moving a small rock on the ground.
(Does she keep her valuables away from her home? I guess she's a bit of a paranoid type.) Thought the stallion.
Now that the rock was no longer hiding what was under it, Maud grabbed a small bottle from the hole and placed it next to the stallion. He was confused to say the least, even after picking up the bottle and giving it a closer look the stallion had no idea what the mare was thinking placing this bottle of slimy liquid near him.
Until he saw that she had lifted the back of her frock up and over her now exposed rear end.
"Alright... You can use my butt until you are satisfied... If you want me in a specific position just ask and I will take it..."
With his mouth as low as it could sink, he looked at the mare's gray plot for a while before she asked "Is this not what you were expecting?... Most stallions know when they are trading with me all I offer is anal sex..."
Still taken aback by Maud's firm ass the stallion doesn't say anything past huh, bua, and mah.
"I will tell you why I am doing this kind of trading... And maybe then you will regain the ability to speak words again..." She said as she pulled her frock over her backside to sit down Maud then started to explain everything.
"I love rocks... I like to collect rocks... But if I'm not careful I spend all my bits buying rocks... One day I got to talking with my sister who lives in ponyville... She told me about how stallions liked sex... So I offered sex to ponies for rocks... Now I can get new rocks... and not spend all of my money..."
Part of the stallion got what Maud was saying, another part didn't think a mare would ever prostitute herself for something like rocks. After some thinking he did come to an agreement with himself about what to do now. Money is just a number that someone else sees as your value anyway.
"Okay, I will happily trade you my gem Maud!"
Maud's face doesn't change as she hears this, she only puts the back of her frock up again to show off her butt and point it at the stallion.
"Actually, could you take off your clothes?" Asked the stallion "I don't want your dress getting in the way."
"It's a frock..." With her statement finished Maud undresses and folds her frock to sets it down on a nearby rock with a flat surface. As the now undressed Maud stands before the stallion he takes a quick look over her, the bland gray fur and purple mane of the mare was quite alluring to the stallion now that he had sexual intent towards her. Now drawing his attention to her plump behind the stallion can't help but ask a question that just popped into his head. "Why anal Maud?"
Turning just a little to make some eye contact Maud exclaimed "If I used my vagina I may get pregnant..."
Now that his question was answered the stallion felt as if the last piece of this crazy jigsaw puzzle of a day was put in place and he could finally get on with this trade.
He started off by spreading Maud's vagina, the light pink of her pussy next to her gray fur was quite the sight. Bringing his tongue to her clit he dragged it all the up in a big lick just shy of Maud's anus. Then he began suckling her clitoris, Maud let out a very soft moan from the stallion's fancy mouth work. Going back and forth between long lick and gentle sucking the stallion kept at this until Maud had gotten so wet that he muzzle started getting soaked. Pulling back his head to look at what he had done so far, the stallion noticed something. Maud's ponut was twitching every so often, the stallion felt compelled to eat it out. Wasting no time the stallion practically slammed his face smack dab on Maud's asshole and circled it with his tongue. Maud lightly gasped at the slightly forceful move to her ponut.
"Very few stallions lick me there..." Those words didn't stop the stallion from going at it, he was almost in a trance as he ate out the mare's backdoor. He even stuck his tongue inside, trying to get it as deep as it could go. Most would think there was a prize waiting for him at the end he tried so hard to get it so far in. In the span of all the ponut tasting, the stallion knew the best was yet to come and stopped. Looking aroung the ground the stallion found the bottle of what he now knew was lube and opened it.
"Maud, go up to the wall and hold your hooves up against it!" Said the stallion in a some what labored tone.
"Alright..."
Maud doing what she was told put her front hooves on the rock wall at a little lower then chest level so she could arch her back a bit. At the same time the stallion rubbed he rock hard cock with the lube to make going in Maud's ass a bit easier. With Maud in position and the stallion lubed up he hopped on Maud's back and asked.
"Are you ready Maud?"
"Yes... My butt is more then ready for intercourse..."
Not needing to ask twice the stallion lined up his tip with Maud's button and slid right in. Once the stallion's horse cock was all the way in they both let out a sigh, Maud's being in relief, and his being in the pure bliss of going balls deep in a mare. Enjoying the feeling of tight pony ponut the stallion stayed still for a few seconds before he began moving. Starting slowly the stallion pulled outward till the ring on his cock was free, then just as slowly pushed it back in. The stallion repeated this as he picked up a pace and was making light slapping sounds the more he gained speed. Faster and faster, harder and harder. Soon the stallion started slamming into Maud ass and was now making loud slapping sounds as his balls smacked against her wet pussy. Every so often Maud would moan under her breath, moaning more and more as time went on and the thrusts turned into hard poundings.
"Mmmh, mmmh, mmmh!"
Hearing Maud's soft moan only made the stallion want to fuck her even harder to get the quiet mare to higher levels of pleasure. Putting everything he had into it the stallion was going all the way to the hilt, with all his might, as fast as his pony legs would let him. He fell on Maud's back and held her tight, not for one instant slowing down. Soon after Maud couldn't hold her moans in any more and began panting lightly.
"Ahh ahh ahh ahh ahh ahh!'
This sound was too much for the stallion to handle, he started to flare. Holding out for as long as he possible could only stopped, himself from stammering what he was about to cry out a few seconds longer.
"I'm... I'm CUMMING!"
As these words left the stallion's mouth he slammed again into Maud's ass, this time shooting off his seed right down her anus. Torrent after torrent of cum flooded the mare's bowls filling her nearly to the brim. Panting heavily the stallion stays inside Maud for a good while as he comes down from the intense orgasm. Maud holds her and the stallion in place till he lifts himself off of her. In doing so a pop rings about as the stallion pulls out completely from the mare. He sits on the ground and takes a look at his handy work, semen oozing out onto the dirt from Maud's now gaping butthole.
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After resting the two ponies finally finish their trade as the stallion gives Maud the hard earned gem.
(That was the best thing that rock could have ever gotten me.) Thought the stallion.
"Well, I guess I'll be seeing you Maud"
"That is not likely... I don't leave the farm that often..." The stallion didn't think about that, he may not see Maud much if see spends most of her time at the farm. The stallion almost felt knida sad thinking about that.
"That is unless you just come down to see me..."
"Huh?"
"That was the most I have ever received from trading with a stallion... I would not made if you came by to once again trade rocks... Or if you just want to have sex again that would be acceptable..."
"Oh, umm, okay I'll do that!" stuttered the stallion. "But I should really get going, I'll come back in a few days or so."
The stallion walked off towards his town, before he was too far away he turn and yelled "Bye Maud!"
Maud was about to say bye as well before she realized. She never got the stallions name.