A NSFW Fanfic of Mars - by (unknown)

Venus and Mars were driving for three hours to get home from their vacation already and Mars needed to pee, but they had no bottles. As Mars held his bladder they saw a rest stop sign to a rest stop with a gas station, a small store with a restroom.
“Venus! There!” Mars shouted and pointed at the rest station. Venus pulled over and Mars quickly got out, ran into the store and went into the restroom which had two stalls and a broken urinal. Mars was forced to go into the first stall since the second one was already occupied. Mars opened the door quickly, stepped inside locking it afterward and started to use the bathroom.
“Ahhhh~ Finally~” Mars said to himself as he emptied his bladder. When he was done he put his dick away and zipped his pants up as the toilet self flushed itself. When Mars went to turn around he was a hole in the side of the stall, making the inside of the second stall visible. As Mars bent down and saw through, he saw another pony inside slowly jacking off his big, brown dick. Mars blushed hard and starred when he soon noticed the big dick started to come for him. He backed up as the unknown pony stuck his dick through the hole. From looking it had to be about 7 inches long and almost 2 inches thick.
“Hey! I know you’re in there, so help me out~” The unknown pony said with a deep voice. Mars questioned it, wondering if he should really do it, and decided to explore, telling himself he should try it out because it may never happen again. Mars slowly licked the tip of the hard dick with his warm, wet tongue and cuffed his hand around his dick starting to slowly jack him off. It was warm at first touch, and solid hard.
“Mm~ Just like that~” The pony moaned as his dick was licked and played with. Mars soon became aroused even more, quicky, unzipping his pants to let his dick out and took the ponys dick into his mouth. Deep, low moans started to come from the other stall as Mars slowly sucked the top of his sick coating it in his saliva. As Mars sucked faster the moans got louder and he said things like, “Such a good little slut~”, and “You suck dick so well, little cock sleeve~”. Mars soon engulfed the ponys whole 7 inch dick into his mouth, deep throating it and gagging on it. Mars pulled back bit only a little and began to suck all of his dick hard and fast. The moans became louder and more constant as Mars sucked his dick, coating it in more of his drool.
“Ahhhhhhh!~ I’m gonna cum!~” The pony moaned out loud. That’s when Mars took the dick out his mouth and opened his ass which he was secretly fingering and pressed it against the hole.
“Oh, you want it in there too?~ Alright~” The pony said, sliding almost all of his wet dick in Mars’ ass.
“Ahhhhhh!~ F-fuck me hard~” Mars moaned out as the pony began to thrust slowly and deeply, but soon speeding up and thrusting harder. Both Mars and the unknown pony began moaning and Mars would occasionally beg for more. The feeling of the long, thick dick in Mars ass made him blush dark red, loving the feeling and squeezing on it.
“Ahhh!~ I-I’m close again! Get ready!~” The pony said as he began thrusting harder and faster.
“Cum please!~” Mars begged loudly. As soon as he said that, waves of warm, thick cum filled his ass completely and they both moaned loudly, Mars also came a lot on the floor making a small puddle. After the pony stopped cumin and filled his ass with cum, he took his dick out of Mars ass and said, “Thanks baby, maybe one day we can fuck again~”, and left the bathroom. Mars fingered his ass loving the feeling of the warm cum inside him and then cleaned himself, cleaning the cum out his ass and the left over drool on his face, as well as the cum on his fingers and he went out the bathroom. No sign of the pony was seen and the cashier didn’t seem to hear them, seeing the bathroom was in the back and he was in the front. Mars quietly left and got back in the car driving away.