Today had been another boring day for Marble Pie, rock farming wasn’t an exciting job, but it was still one that her family had to do. Every day before she went to bed she would take a shower to clean off any dirt or grime from day before having some “personal time” for herself. Lately it seemed like she was having to “relive” herself more often and, having a 15 inch long futa cock, that meant that unless she wanted to make a mess elsewhere in the house she had to do it in the shower. It always seemed like a weird joke to her that she's, the shyest member of her family, would be the one to be born a futa and not her more forward sister Limestone or the outgoing Pinkie. Though that didn’t change the fact that right now her cock was slowly starting to harden.

Since marble had more than one reason for taking a shower she would wait until the rest of the household was cozying in for the night. She didn’t want anypony to accidentally hear her as she pumped her cock, or hear her moans as she came painting the shower wall in her thick cum. Thankfully the entire Pie family was known for being very heavy sleepers, in fact her sister Maud sleep through one Hearth's Warming morning while Pinkie jumped on her bed, setting off party poppers. Maud was the heaviest sleeper in the family, and always went to bed, and woke up at the same time every day. Marble was glad that Maud’s room was the only one beside the bathroom, that let her know when it was or wasn't safe to take a shower. These things weren’t in her mind right then, instead her main focus was on her 15 inches of throbbing horse cock.

Marble started her routine like she did every night, first she grabbed the head of her shaft and started to rub her palm in gentle circles around the flare, while her other hand lathered up and pumped her veiny shaft. She slid her hand up and down its length, closing her eyes and enjoying the sensation, before moving downwards to gently clean and fondle her apple sized testicles, that were more than productive enough to impregnate a mare several times over. Cupping her breast while fondling her balls, her cock started to leak pre, clear rivulets running down her shaft mingling with the water of the shower.

After her balls were nice and clean, she went back to stroking her shaft. She gripped her prodigious cock and pumping her hand from base to tip. She started to pant and moan a bit while pleasuring herself wondering what it might be like to have somepony else jerk her off or, even better, somepony with a juicy hole to fill. These were just fantasies of course, she would never have the confidence to ask a mare to jerk off her cock and let her cum in their mouth, or to split them open with her impressive shaft and inject her cum deep inside them. These fantasies were the closest she would probably ever get but the thought always excited her and caused her erection to get that much harder.

Moving both hands to her shaft she began furiously jerking her hands up and down, feeling every vein running up and down its length. Her knees started to weaken as the pleasure increased, her tongue lolled out of her mouth as she panted harder and harder from jerking her rod. She could feel her balls start to churn with thick potent cum. She jerked her shaft faster and faster, her hands almost a blur as her climax approached. Then she felt It happen, it was like a faucet turned on in her balls. Her cock erupted shooting ropes of cum against the shower wall, the thick goo slowly rolling down. Marble panted holding her still dripping cock for a while, trying to catch her breath. After she calmed down she finished her shower, cleaning any cum left on her cock, or body.

After she finished, and cleaned up the mess she made, Marble started walking to her room, but on the way there she saw Maud’s bedroom door was open a bit. Marble thought she probably hadn’t closed it all the way when she went to bed. She, being a good sister, went to go close the door but when she looked inside she saw Maud on her bed. She was lying completely nude, her covers tucked in beneath her. The moonlight from the window was hitting her body, showing off every detail. Marble hadn’t seen Maud naked in years, she had no idea that Maud had developed so much, and in so many areas. Marble guessed she never noticed it because of what Maud wore everyday. Maud’s entire wardrobe consisted of baggy, loose clothing that hid almost all of her features, Marble had no idea of the curvy mare hidden beneath it.

Mauds legs were smooth and led up to a set of full hips and plump ass, toned from a life of labor on the farm, yet still soft and full looking. Her breasts, while being rather large, seemed perky and firm. All in all a truly an undeniably beautiful mare, and Marbles body knew it. While she was looking over her sister, her cock started to twitch, and harden. Marble quickly and quietly ran down the hallway, into her own room, before she was caught peeping. Softly shutting her door Marble pressed her back against it and hyperventilated, not only had she seen her sister naked but it had even made her cock start to harden. Shaking her head in an attempt to clear the thoughts from her it she decided to just go to sleep, and pretend like nothing had happened. She couldn’t be attracted to her own sister, and she wouldn’t let the thought of Maud’s nude body keep appearing in her mind.

Author's Note

Hey this is the first story I've made, if you see any problems please post a comment below.