A Submissive Sibling
Copyright© 2025 by H. Malcom Walker
Chapter 16: A Day of Debauchery
Incest Sex Story: Chapter 16: A Day of Debauchery - 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
We spent most of the afternoon just relaxing while Lila was still conked out in the bedroom. Jake, Luis, and I took turns playing Halo on the old X-Box, while Carrie spent most of it curled up in María’s lap on the half-sofa off to the side.
María had finally convinced Carrie to take off the cuffs and elbow knots, but she had to eat my little sister out one more time before she relented. It was very erotic to watch, but my cock was still tired from everything that had been going on here the last 24 hours. Even the little green tablets Luis had given us weren’t helping much anymore.
Jake and Luis were much more into the video games than I was, so I finally got up and walked over to the girls, taking María by the hand and pulling her to her feet. “Carrie, fetch us three more beers and meet us out at the hot tub. I want to see more titties float.”
“Okay,” she replied. “I’m going to stop by the restroom first. Don’t start without me!” she called out as I moved to open the sliding glass door, pulling María along with me.
I led her onto the deck and over to the hot tub, where I folded the cover back. I made sure the temperature was set right then activated the jets. I slipped out of my shorts and climbed in, with María already waiting for me. I slid into the water and lowered myself down in the middle until the water came up to my neck, enjoying the heat even though it verged on being uncomfortable.
“I guess it’s weird for Tennessee boys to have hot water right up at the house, right cabrón?” María said with her usual snide tone. “I don’t know why the boys don’t just stay naked also? Are you afraid of seeing too much cock?”
For a moment or two, I ignored her, other than giving her a sly sideways smile. I slid back up on the underwater bench, then reached over and grabbed her around the waist, pulling her up onto my lap. She gave out a yelp as I slid her to where I wanted her, sitting sideways across my thighs. She halfheartedly tried to resist, but I was far stronger than her. I held her there with one arm over her thighs, and the other behind her back.
“I might be afraid of seeing Jake’s cock too much. That thing is shaped like a beer can. You know, despite how much of a bitch you try to act like, Carrie and I both really like you,” I said in a low, steady voice. “You have a fantastic body and you’re really fun to fuck. You’re also smart, funny, and able to act like a submissive to my sister, even though we both know you’re never going to truly submit.”
María didn’t say anything. She just sat there and looked into my eyes, so I just kept talking. “All I’m saying is that I want to see more of you going forward. Carrie and I are going to move to Oklahoma and live on Jake’s ranch. Maybe you can come out there or we can come visit you in L.A.”
She looked at me and gave me one of her little smirks, which was only slightly spoiled by her hair being in two big pig tails with bows on the top. “Oh, I would love for you to come see me in L.A.,” she said, her voice low and sultry. “One of my subs has a perfect little dungeon where I can play with Carrie for a week or so. You think that little cunt is submissive now? Wait until I spend some time with her, cabrón. I’ll make her beg for more, and you’ll be begging to watch, won’t you?”
“I’ll have to think about that,” I replied. “I’m not sure how much of a submissive I want to turn her into. I really do love her, you know ... ow!”
While I was talking, María had reached up and pinched one of my nipples ... hard. Like really dug her nail into it. It felt like it had almost been ripped off, but I didn’t see any blood when I looked down at it.
María tilted her head back and laughed, then she reached for my other nipple. I reacted with the hand-to-hand training I’d received, and within seconds had her in a wrist lock. I was standing up in the middle of the hot tub and she was bent over with the side with her head and shoulders pressed against the wooden deck.
“I think maybe you’re a little submissive as well, Cabron,” she said, still with that maddening laugh in her voice.
That made me angry, but I also had a raging hardon, which had sprung up in just the last few moments. I wasn’t sure if it was the nipple pinch or manhandling this cocky L.A. bitch that caused it, but there was only one thing to do about it. I pulled her wrist down to her lower back and held it there while I used my other hand to stroke my cock up and down her slit.
“Oh, are you going to fuck me again?” she sneered as she looked back at me. “I’ve had plenty of big dicks, so what’s one more? Come to L.A. this summer and I’ll add you to my collection.”
“Hey! Did you guys start the sex stuff without me?” Carrie asked as she walked up holding three beer bottles.
“Carrie, hold her head down so I can fuck this cunt properly,” I ordered. She gave me a grin as she set the bottles down on the corner of the tub then sat on the side so she could pull María’s head into her lap.
“Oh, yes! I was just thinking that I needed my pussy licked, and here you are with built-in handlebars!” she said as she grabbed María’s pig tails and used them to pull the Hispanic beauty’s face onto her mound. She leaned back to give María better access, and was rewarded with a tongue thrust deep into her sexy little cunt.
I kept rubbing my cock up and down María’s slit, which was wetter than it would have been from just being pulled out of the tub. Then I made a decision, and plunged my cock balls deep in her pussy in one big thrust.
I fucked her hard for about ten strokes, shoving her face hard into Carrie’s pussy each time I bottomed out. At first, I felt a little guilty, but she was grunting and moaning in pleasure, proving to me once again how rough she liked it. I made another decision right then to see just how far I could push it. Pulling out of her fantastic cunt, I grabbed one of her ass cheeks with each hand, then spread them wide. I raised myself up a little and pushed my cock deep in her tight little asshole, prepared to shove it all inside in one stroke.
Well ... that was the plan anyway. I’m new at this so it stopped about halfway in. That was enough to get a reaction out of her anyway. She threw her head back and started screaming in Spanish.
“¡Ay, carajo! ¡Hijo de puta!” she cried out, her body tensing and bucking beneath me. “¡Me estás destrozando el culo, cabrón!”
Carrie chuckled, her eyes gleaming with amusement as she looked down at María. “Oh, don’t be such a baby, María. You know you love it rough. Keep licking, or I’ll make it worse for you.”
I moved my hands down to María’s hips, holding her firmly in place as I began to move, slowly at first, allowing her to adjust to the intrusion. “Relax, María. You can take it. You’re such a good little ass slut for Daddy, aren’t you?”
María’s screams slowly turned into a mix of moans and curses as I continued to fuck her ass, each thrust deeper and more intense than the last. “¡Sí, sí! ¡Me encanta, pendejo! ¡Fóllame el culo, cabrón!” she screamed, her voice a ragged mix of pain and pleasure.
Carrie, meanwhile, ground her pussy against María’s face, using her pigtails to control her movements, and keep the other woman’s face crammed tightly between her thighs. “That’s it, you little bitch. Lick my pussy like your life depends on it. Make me cum, and maybe I’ll let you breathe.” Then she ruined the whole effect by giggling. I’m not sure she was ever going to be a real dominant.
I could feel María’s body trembling beneath me, her muscles clenching around my cock as I pounded into her. The combination of her tight ass and the knowledge that she was being used by both of us pushed me closer to the edge.
“Fuck, María. Your ass feels so good,” I groaned, my hips moving faster. “I’m going to cum deep in your ass. Is that what you want, you little slut? Tell me!”
María’s only response was a garbled moan, her face buried in Carrie’s pussy, her body writhing with each thrust. I could feel her orgasm building, her body tensing as she neared the brink. The hot walls of her colon were squeezing down hard on my cock. It felt fantastic.
“Cum for me, María,” I commanded, my voice firm and dominant. “Cum while I fill your ass with hot jizz.”
With a final, powerful thrust, I came undone, my cock pulsing as I spilled my load deep in her ass. María screamed, her own orgasm ripping through her, her body convulsing with the intensity of her release.
Carrie, not to be outdone, ground her pussy against María’s face one last time before coming with a cry of her own, her hips bucking as she rode out her climax.
As we all caught our breath, I pulled out of María, leaving her a trembling, spent mess that collapsed back onto the seat inside the tub. Carrie looked down at her, a satisfied smirk on her lips.
“Good girl, María. You took that like a champ. Maybe next time, you’ll be a little more prepared, huh? Did you enjoy my brother’s cock inside your tight little ass?”
María nodded, but didn’t say anything. She sat there panting, trying to catch her breath. I was doing the same. After I took a few more breaths, I reached out and grabbed her pig tails, pulling her towards my cock.
“Clean up your mess, little pigtail girl,” I said, bumping the tip of my cock against her lips. She grimaced a little, but opened her mouth and started licking and slurping down the shaft, cleaning off the mess that her asshole had left behind.
Carrie handed me a bottle of beer then picked up one herself as she slid down into the water. She watched María working on my cock, then stood up to pull my head down for a long kiss. “I love you, Mark,” she said when she finished. “I love you and can’t wait to spend the rest of my life with you, wherever we end up.”
“Well, speaking of,” I said as I moved over to sit down on the edge of the tub, with my feet sticking down in the water. I pulled María with me, having her kneel in the water so she could continue servicing me. Carrie sat down beside me and I pulled her in close.
“I’ve made a decision about what we’re going to do,” I said, looking into my sister’s eyes. “Jake’s family owns a large cattle ranch up in Oklahoma, and he wants us to move into an old farm house they have on it, and for me to learn how to run cattle. I already told him I’d do it, so we’ll be heading up there in the next day or so.”
Carrie looked like she had questions and concerns, but I was glad to see she kept quiet for the moment.
“I know it’s a surprise, but I’m in charge of us, so it’s my decision to make. He said the house has lots of room, and it’s out in the middle of nowhere, so it will be a perfect place for us to raise our kids. You know I’m going to keep you filled up with babies, right?”
She smiled up at me and I could see a tear in the corner of her eye. I knew her well enough to know that it was a tear of happiness, though.
“You want to know the best part?” I asked. “There’s a cottage ... oh! Fuck!” I had to stop because María was sucking really hard and lashing the tip of my cock with her tongue. Once again, she was trying to fuck with me. I’d be sure to pay her back later.
“Anyway,” I continued, reaching down to give María’s pigtail a hard tug. “There’s a cottage behind the house and Lila said she’d live there and be your doula, whatever that is.”
Carrie gasped. “Mark! Really? I can’t believe it.”
“Yep,” I replied as I nodded at her. “You’re going to have to help me get that house cleaned and fixed up, since I’ll be busy learning how to be a cowboy.”
“Yeehaw,” said María from below. I used my grip on her pigtail to pull her back onto my cock. She was an incredible cocksucker, and I hoped she would give Carrie some pointers.
Carrie hopped up and out of the tub. “I’m going to check on Lila. I’m so happy I get to keep seeing her.” Then she was off, dashing towards the sliding glass door. That left me alone with María, who I was starting to think could suck a golf ball through a garden hose.
I held one hand on the back of her head and drank my beer until she finished, which didn’t take long. As my cock started spurting, I pulled her head up a little so most of it would end up inside her mouth. She knew what I wanted, and showed it all pooled up on her tongue when I finished.
“Swallow it,” I ordered as I pulled her up into my lap. I turned her to face away from me and started playing roughly with her tits and nipples from behind. I squeezed her cups and rolled her nipples roughly between my thumb and forefinger. “You were such a good little girl for Daddy,” I said. I felt her stiffen up at my words. She may seem like she’s submissive, but I knew it was all an act. It would take a lot more to break this bitch. I hoped one day to get the chance to try.
After I used and abused her nipples for a while, I told her to come with me back inside, holding her hand as I led her back through the door. We found that Lila had finally woken up, and was sitting at the island eating a sandwich and sipping on a beer. She looked refreshed, but maybe still a little tired. She and Carrie were laughing about something. Jake and Luis were playing video games, of course.
After about half an hour, María asked Luis to help her clear a space in the living room. They moved the table and an ottoman out of the way, leaving a clear space in the middle. She clapped her hands together twice and yelled out, “Okay putas, everyone get in here for our next game!”
Carrie, Lila, and I joined them in the living room, with Lila plopping down between the other guys on the couch, while I pulled my sister into my lap as I sat down on the chair. María stood off to the side in front of the television.
“Okay,” said María, “before we start, are any of the cocks here too tired to keep going? With all this fine ass pussy you’ve had, we understand if you’re too tuckered out.” That made Carrie start giggling and Lila was smiling as well.
Jake stood up and walked over to stand next to her. “Well ... my cock may be a little tired, but I bet using that paddle on some of that fine ass would rev him right up. What do you think?” He slapped her ass with the flat of his hand to emphasize his point.
María just smiled at him. “Settle down there, big boy. You’re going to enjoy this next bit.”
“Well, if I don’t, I’m going to shove my cock straight up your ass,” Jake replied. He squeezed her ass cheek again then went over to sit on the couch again.
“Okay,” said María. “Carrie, you were the winner, so you get to pick first.”
“What do you mean?” my sister asked.
“First, come over here in the middle and get down on your hands and knees.”
Carrie looked skeptical, but she did as she was told.
“Now, you pick one of the guys that will be in front of you.”
“I choose Mark,” she said, without even thinking about it.
“Okay, Mark, you get naked then down on your hands and knees in front of her.”
I was kind of wary at this point, but I did as she asked, pulling my shorts and shirt off and tossing them to the side. I lowered myself onto the floor in front of my sister, who giggled and leaned forward to pop me on the butt with her hand. I shot her a pretend scowl.
“Now,” María continued. “Pick one guy that will be behind you.”
“Uh ... I pick Luis,” Carrie said.
“You heard her, cabrón,” María said to her cousin. “Strip and get on the floor behind her.”
Luis also acted reluctant, but did as he was told, positioning himself behind Carrie on the floor.
“Lila, you were ‘not the loser’, so you can pick to be in front of Mark or behind Luis.”
Lila blushed, trying to act shy, which we all knew was bullshit. She was quiet for a moment or two, but then she stepped over and got down on all fours in front of me.
“Curve it around a little,” said María. “We’re going to be making a circle.” Lila and I moved a little, making the formation curve a little more.
“Now, Jake goes in front of Lila and I’m between Jake and Luis,” she said as she got in position herself. Jake soon followed, so now there was a boy, girl, boy, girl circle on the floor in the living room and we were all naked.
“I’ve got an app on my phone, and when I start it, it’s going to ding every five minutes. When it dings, listen for instructions on what to do next. When I start the app, you’re going to spread those ass cheeks in front of you, then eat that asshole out. Also, there will be no stroking of clits or cocks. I expect full cooperation, and if you don’t think someone is eating your ass good enough, we can punish them for it. Everyone got it?”
“Ooh, this is just like that old scary movie,” said Carrie. “What was the name of it?
“Human Centipede,” said María. “That’s what the game is called also. Everyone ready?”
We all said something affirmative and María clicked her phone screen and set it down beside her.
Beep ... beep ... beep ... Ding!
I immediately felt Carrie’s hands grab my ass cheeks, spreading them apart so she could dive in with her tongue. She stabbed at my grommet a few times before she started rimming me, circling her tongue rapidly around the ring. Fuck, that felt good.
At the same time, I reached out and spread Lila’s ass open, ready to feast on what I found there. Her little brown ring was a bit red and swollen, probably from the double penetration she’d had from her nephew and Luis earlier today. I decided to be a little gentle at first, and swathed my tongue all around the pulsing hole. It was so warm and soft, and it felt fantastic on my tongue as I continued to work the tip around the edge of it.
It seemed like I had just started working my tongue past Lila’s right ring, into the velvety insides when the time went off. I had managed to relax my own hole, and Carrie had her tongue buried deep inside it, wiggling it and moaning in pleasure at the same time.
Ding!
“Okay, everyone turn around and face the other direction. Get back to licking!” said María.
I pivoted on my knees then went down and spread my little sister’s ass cheeks apart. I felt Lila doing the same behind me. Carrie’s rosebud was covered in Luis’ spit, but I didn’t mind. He was the closest thing I had to a brother and I was anxious to get my tongue inside Carrie. Her hole had not quite closed up, so I was immediately able to get past the constriction and experience the gooey insides of her anus.
Behind me, Lila’s tongue was longer and thicker than my sister’s, so it felt completely different as she did her best to get the entire organ inside me. I really wanted to reach down and stroke my cock while this was going on, but we’d been told not to do that.
The five minutes seemed to fly by, and then the timer went off again.
Ding!
“Now let’s have each girl move forward and replace the girl in front of her,” María called out. It took a few seconds longer to get situated, but now I had Lila in front of me again while María moved up behind me.
Fuck. I really loved everything about Lila. She was thick and juicy and also a complete slut who loved everything I did to her. I wouldn’t tell Carrie this, but I was very happy that I was going to have both of them around in the future. I was very turned on about putting babies in my sister, but I also wanted to put some in Lila if she’d let me.
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