A Submissive Sibling
Copyright© 2025 by H. Malcom Walker
Chapter 17: Becoming a Cowboy
Incest Sex Story: Chapter 17: Becoming a Cowboy - Mark and his sister Carrie have always gotten along well, even if she likes to tease him a little too much. A surprising DNA result leads to lines being crossed. Discover the taboo journey of two siblings caught in a web of desire and consequences.
Caution: This Incest Sex Story contains strong sexual content, including Ma/Fa Fa/Fa Consensual Lesbian Heterosexual Sharing Incest Brother Sister Cousins Aunt Nephew BDSM MaleDom FemaleDom Humiliation Light Bond Rough Spanking Group Sex Harem Anal Sex Analingus Cream Pie First Fisting Masturbation Oral Sex Pegging Pregnancy Sex Toys Squirting Illustrated
The next three or four weeks were a blur of activity. When we got to the ranch, up in Osage country, it was huge, at least to me. We went through a gate and drove several miles down a dusty gravel road until we turned onto a driveway that ran up a short hill with a ranch style house on top of it. Behind it I could see a metal barn as well. The house looked to be in good shape, but slightly unkept, like no one had lived there for a while.
Lila unlocked the front door and led us inside to give us a tour. “I lived here myself for a while when I was a kid,” she said as we walked into the living room. It was fairly sizeable and had some furniture wrapped in plastic in it.
We walked through all the bedrooms and checked out the bathrooms. “My uncle turned on the power and water yesterday,” Lila told us. “We probably need to let some water run for a bit to bleed out the lines, but it’s drinkable. I still like to filter it though.”
She showed us the master bedroom first, which was the only one with a bed in it. It was a big king size bed, currently covered in thick plastic like the rest of the house. “I’m going to bring over a vacuum cleaner and cleaning stuff tomorrow,” Lila said. “My other nephews are going to help me bring over furniture for the cottage as well, so I can start sleeping there soon.”
“No,” said Carrie, looking very serious.
“What do you mean no?” I asked her.
“I mean no! You heard me,” said Carrie, giving me a very petulant look. “I don’t want Lila in the cottage.”
“What are you talking about?” I responded, about to get angry. “We already said she was going to stay there and help you once you’re pregnant. Remember?”
“I don’t care, Mark! I don’t want her in the cottage. I want her in that king size bed with us. Every night. Now make it happen.”
Not being able to help myself, I started laughing, and rubbed my face with my hand. Oh man, she had some payback coming, the little brat. I turned to Lila and took her hand in mine, then Carrie’s as well. We stood there in a small circle, looking at each other for a moment.
“Lila, would you do us the honor of sleeping in the bed with us, as long as you’d like to?”
She blushed and looked down at the floor, but after a moment lifted her head up and looked at me. “I do want to sleep in the bed with you both, but I also want something more.”
Carrie and I looked at each other then back at Lila, both of us with a surprised look on our faces. “What would that be, dear lady?” I asked.
“I know Carrie is your lover and will be your wife, but I want to submit to you also. I like the way you treat me, how you are dominant and in control, but still care about me. I need both of those in my life, and I will submit myself to you if you’ll let me.” Then she looked back down at the floor again.
I looked over at my sister, whose eyes were wide as she looked back at me. She gave me a small nod, so I made my decision. Letting go of her hand, I reached out and pushed Lila’s chin up so she was looking at me.
“Do you promise to submit to me and do everything I tell you without question?” I asked in a very serious tone.
“Yes, Mark,” she replied, tears welling in her eyes.
“Do you understand you are my slut and you belong to me? That you will fuck me, Carrie, and anyone else I tell you to, no questions asked?”
“Yes, Mark.”
“Will you have children with me, and also treat any that I have with Carrie like they were your own?”
That got a sharp gasp out of both of them, since we had never talked about this before. I knew I wanted to put babies in both of them, multiple times. The thought of them being filled up with my children, their bellies and breasts swollen because of me, was already causing my erection to harden.
There was only a moment’s hesitation, then she responded, “Yes, Mark.”
“Then I will gladly accept you into our bed and also into our lives. Just remember ... I will be in control. I will control the finances, the major decisions, and anything that would affect our family as a whole. Your job is to love me, love Carrie, and love all the children that we’re going to have to fill this house up.”
“Thank you, Mark. You’ve made me so happy,” she said, her eyes full of tears. I looked over at Carrie, who was also crying. “The same all goes for you as well, Carrie. Do you accept everything I asked of Lila for yourself?”
“Yes, Mark! Of course! I love you so much and you’ve given me a new sister!” Then she came in and wrapped her arms around both of us, and we all hugged for several minutes. Just like that, I had a harem. Wait, is two women considered a harem? I’m not sure. I was still very new to all of this.
Pulling out of the hug, I looked at both of them and made a tsking sound. “I have to punish you both, since you’re inside the house and still have clothes on. You know the rules.”
“Mark! That was just for the cabin,” Carrie complained.
“Nope,” I said as I shook my head. “The rule now is you should always be naked if we’re somewhere you can be naked. Should I go get the paddle out of the truck?”
“It’s not fair to punish us if you change the rule without telling us,” she whined.
“It doesn’t have to be fair. I don’t even need a reason to spank your ass. I just like doing it. Now out of those clothes, sluts!”
They both hastened to strip, although they were giggling the whole time. I let them keep their shoes and socks on long enough to unload the truck. We spent some time getting the master bedroom to the point where we could sleep in it, then had a quick supper of sandwiches and chips.
I was lenient, so I planned to give each of them five licks with the paddle, starting with Carrie. She was still scared, but I went more for humiliation than pain. She stood in the middle of the living room, surrounded by plastic wrapped furniture. I had her grab her ankles and bend over, presenting me her beautiful, tight little ass that I loved so much.
I rubbed the flat of the paddle around her cheeks for a while, building up the tension and apprehension of what was about to happen. Without warning, I quickly pulled the paddle back and landed a nice lick right on her right buttock.
Whack!
Damn, did I love that sound. I also loved the nice red imprint that appeared on my sister’s lily-white ass. I had Lila kneeling right next to her, waiting her turn.
“Maybe your new slut sister Lila will help you soothe your pain,” I said. “Do you want to ask her to kiss it and make it better?”
“Lila! Will you please kiss it and make it better?” she pleaded.
My other slut smiled and leaned forward, rubbing her palm along Carrie’s red ass cheek for a few moments. Then she kissed it gently and leaned back.
Whack!
“Oh Lila, please!” Carrie cried out.
Once again, the beautiful, curvy slut leaned in and soothed the mark on my sister’s left ass cheek, ending with another gentle kiss.
Whack! Whack! Whack!
This time I let Carrie have all three licks at once, alternating which cheek they landed on. They were hard licks as well, but not as hard as I could make them. I thought her legs might buckle when I finished.
“Oh, fuck! It hurts!” she cried out.
Lila moved forward without being asked, using both hands to softly stroke over Carrie’s red, glowing ass. She planted kisses all over them as well. She was about to dive in and start licking Carrie’s slit from behind, but I grabbed her by her long hair and pulled her back.
“No, no. None of that. Save it for the bedroom, sluts,” I said with a laugh. It was amazing how much these two already loved licking each other’s pussies. I’m pretty sure they also already loved each other as much as they loved me. I had no problem with it, since I get really turned on watching two women make love.
Lila gave me a pouty look, but didn’t argue. She was much more submissive than Carrie was, at least for now. I pulled her up to her feet and had Carrie kneel on the floor next to us.
“Okay, Lila. Do you want your five licks on your ass or your tits?”
“Why not both?” she smirked at me, showing a bit of defiance. I was struck again by the differences between the two women in my life now. Carrie let me spank her because she loved me, but Lila loved it when I spanked her.
I smiled at her, a plan forming in my mind. “Both of you on your knees, sluts. Start sucking one of her nipples, little sister. Get it nice and hard for me.” Carrie smiled at me and happily complied. She latched her lips around Lila’s right nipple and started sucking as hard as she could. I watched as she wrapped both her hands around the base of the tit, squeezing and kneading it like she could somehow force milk up out of it.
I let it go on for a few moments before I said, “Okay, Lila. Close your eyes. Keep them closed tight.” I waited a few more seconds, then I pushed Carrie’s head back with my left hand while I brought the paddle down on top of Lila’s breast.
Whack!