Marble's sleeping sister

*during the day*

Today had been a boring day on the Pie farm, all the chores had been done by noon, and there was nothing else to do but relax till the next day of work. Marble decided to relax in the living room until dinner time, laying on the couch asleep though was her Sister Maud. As soon as she saw her sleeping sister Marbles cock twitched in anticipation, it knew its brood mare was basically inviting it to ravish her womb. Marble tried to keep herself under control, she wasn’t alone in the house and everyone else was still awake. Even so she had to know if Maud was getting wet and ready for breeding whenever she fell asleep now. Marble carefully sat on the sofa next to the sleeping mare. Today Maud was wearing one of her loose one-piece dresses, so all Marble had to do was lift it up and see if her panties were wet, that’s all she was going to do. That’s until she saw that Maud wasn’t wearing any underwear, her pussy was dripping wet and inviting any local futa to take her for a ride.

As soon as the saw that drooling pussy her member became rock hard, it wanted to fill her womb full of its thick cum. Marble tried to cover her erection somehow but 15 inches of futa cock isn’t an easy thing to hide. She couldn’t go to the shower to relieve herself either, because someone might see her. She was stuck on the couch with a rock hard cock and a drooling pussy right next to her. She knew this was some kind of cruel punishment for what she had done, but it couldn’t be helped now. She couldn’t just masturbate her problem away, where would the cum go? Then again, she did have Maud next to her. Her womb was the perfect place to pump her cum, and it was already lubricated up to take her fat cock. She wondered if this was crazy to really think about fucking her sister in the living room, in broad daylight. Either way her cock wasn't going to go down on its own, and the more time she wasted the more danger she was in.

Marble pulled out her cock and rested against Maud’s entrance. She rubbed her head along her sisters fuck slit, lubing up and spreading her lips. Marble braced herself before pushing her cock all the way to the hilt in her sister, Maud’s pussy and womb were being claimed by her sisters cock. By now Maud’s Cervix had completely opened itself to futa cock, Marble was able to hilt herself anytime she wanted to, and she loved to do it. Feeling Maud’s cervix sucking on her tip when she plunged into Maud’s pussy was the best part of fucking her, it was like it was begging her to fill her womb with thick cum, to breed her completely. Marble thrust in and out of her sleeping sister on the couch, trying to keep the wet slap of futa dick into broodmare as quiet as possible. Marble could already feel that from the excitement of possibly being caught, she would blow a bigger than normal load, but she continued to hammer into her sister. In and out her cock pounded from flare to base, Maud’s pussy took every inch Marble could give her, her cock went from pussy, to cervix, to womb.

Marble was starting to get further into rutting Maud now, she had pushed her hands up Maud’s dress and was grabbing her boobs, pinching her nipples. Every pinch she did caused Maud’s pussy to contract around Marbles cock, milking more and more pleasure out of Marble as they went on. Marble started slamming her hips into Maud, over a foot of cock was going in and out with each thrust of her hips, and every time it would bottom out with her cock stretching out her womb. Maud didn’t know it but at this point her body was a futa cum slut, it was always ready for Marble to come and put all the cum she could inside it, either filling up her stomach by drinking that thick delicious cum, or by pumping it into her womb to try and breed her. Every night without Maud suspecting a thing she was being filled a bred by her futa sister, and now even during the day her womb was getting filled with her cum.

When Marble felt her cum getting ready she pulled out one last time and drove her cock as hard as possible into Maud’s womb, her flare expanded inside keeping her cum locked in as she pumped spurt after spurt into Maud. Her womb was completely filled with Marbles thick cum, when she was done and started to pull her mare destroying cock out, Maud’s cervix closed behind it, keeping all that cum locked inside to drown any eggs she might have. Thankfully since it was a safe day nothing would happen, but her body still hungered to keep her cum inside. Marble made herself and Maud presentable and went to go take a shower. Having fun where you might get caught seemed to make the sex even better than normal Marble thought.