A Submissive Sibling
Copyright© 2025 by H. Malcom Walker
Chapter 15: Lila’s Long Day
Incest Sex Story: Chapter 15: Lila’s Long Day - 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 Heterosexual Sharing Incest Brother Sister Cousins Aunt Nephew BDSM MaleDom FemaleDom Humiliation Light Bond Rough Spanking Anal Sex Analingus Cream Pie First Fisting Masturbation Oral Sex Pegging Sex Toys Illustrated
The three guys all looked at each other then back at Carrie, eyes wide with anticipation and curiosity. “A blow job contest?” asked Jake. “How’s that going to work?”
Carrie was practically gushing with excitement, and responded immediately. “Me and Lila worked it out in the shower. The guys all sit on the couch with their penis out...”
“It’s cocks, baby,” I said. “No one calls it a penis. Especially once you’re a slut.”
She looked at me with a wry smile, then continued. “So anyway, you all sit on the couch with your cocks out, and we’re going to blindfold you. Then each girl will take turns blowing two of the guys, swapping every two minutes. We’re not allowed to blow our guy to start, so I’ll take turns blowing Jake and Luis. Lila will take turns with Mark and Luis, and María will swap between Mark and Jake.”
All three guys glanced upwards, visualizing it in their heads for a moment before we all nodded in agreement.
“The winner is the first girl to swallow a load of cum. The ‘not a loser’ is the next girl to swallow. The last girl still has to make the last guy cum and swallow it, but she’ll be punished afterwards for being the loser. Got it?”
“Oh yeah,” said Jake. “This day is just getting better and better. What are we going to use for blindfolds?”
Carrie grinned mischievously. “I have silk scarves in my bag in the bedroom. They’re soft and will make it more sensual. Plus, we can use them to tie up the loser if we want.”
Lila, who had been quietly listening, chimed in, “I have an app on my phone that will chime every two minutes. That way, we’ll know exactly when to switch.”
María added, “If I win, I get to take off these damn handcuffs!”
“If you lose, we’re going to add more,” said Carrie, daring her to argue with her.
Jake laughed, his eyes sparkling with excitement. “You girls have thought of everything. Alright, let’s do this. Who’s ready to see who the best cocksucker is?”
Luis, always competitive, flexed his muscles and grinned. “I’m ready. Let’s see what you’ve got, ladies.”
With that, everyone moved into position. The guys undressed and sat in a row on the couch, our cocks already hardening in anticipation. I was in the middle, with Jake on my left. The girls retrieved the silk scarves, tying them gently but securely around each of our heads. The room was filled with a mix of nervous energy and excitement as the timer was set. We were also told to sit on our hands, not being allowed to use them during the contest.
“We’ll be right back,” Carrie said. “We need to figure out who starts with who.” I heard them walk over towards the kitchen island, and some whispering started that I couldn’t quite make out. A coin was flipped, and I heard it wobbling around on the counter top.
“Hey Luis,” said Jake. “Remember to think about your grandmother’s dried up pussy the entire time. María is gonna be mad if she loses.”
“Los ... you told me you loved fucking my Abuela,” Luis replied. “Maybe you shouldn’t spend all time stretching out those cow cunts back home on the range.”
We all started laughing, but suddenly I heard a ‘ding’ and felt someone settle between my legs. A soft, warm mouth inhaled the tip of my cock. I wasn’t sure if it was Lila or María, but whoever it was wasted no time, swirling her tongue around the tip a few times before she took it deep in her throat. It felt like she was trying to suck a golf ball through a water hose. I tried to think of other things, like baseball or Jake fucking a cow. Anything to slow down the prospect of cumming first and making Carrie lose the contest.
The room filled with the sounds of sucking and slurping, interspersed with the occasional moan of pleasure from one of the guys. Blindfolded and at the mercy of two competitive sluts, I tried to guess who was blowing me. María’s technique was unmistakable, her mouth hot and wet, her tongue swirling around my sensitive tip, just like she had done last night but more intense. I was pretty sure it was her, but I couldn’t be absolutely certain.
Then the timer dinged, signaling the end of the first round, the girls swapped positions. I felt another mouth slurp my cock inside it. I figured this was probably Lila, who had not blown me before. Her approach was different, her suction stronger and more insistent. I was almost certain it was her, but the blindfold and the intensity of the sensations made it hard to be sure.
I continued to try and hold out, but Lila apparently had a strong determination to win. I felt that old familiar sensation starting down in my ballsack, but then I heard Luis gasp beside me and say, “Oh fuck,” under his breath. He sounded like he was struggling to keep it under control. I just hoped it was Carrie that was stressing him out like that.
The contest continued to the third round, then the fourth, each round more intense than the last. All three guys, driven wild by the sensations, struggled to hold back our orgasms. The girls, determined to win, used every trick in their book to bring their partners to the edge.
Finally, with a loud groan, Luis came undone. “Oh fuck! My balls!” he cried out. “Lo siento, Prima!” I heard someone gagging and swallowing, and I was certain it was Carrie who had just swallowed his load. Whoever was currently swallowing my cock, she only hesitated for a moment before deepthroating me again. This time she began using her throat to massage my shaft. It had to be María.
“I win! I win!” Carrie cried out.
“Oh fuck, chica, that was amazing,” Luis groaned out.
The timer chimed again, and I heard María sigh in frustration as she pulled off my rod again. I was close. It wouldn’t take much to push me over the edge at this point.
Lila, not to be outdone, dropped onto my dick immediately. She started swirling her tongue around the tip of my cock as soon as she got between my legs. Suddenly, she grabbed my sack and started rolling my balls around inside like they were precious jewels, her touch both firm and gentle. It sent waves of pleasure coursing through my body. She knew exactly how to drive me wild, and her technique was a perfect blend of skill and intuition.
In almost no time at all, I lost control, and my cock started throbbing in her mouth as I came hard. She swallowed every drop, not even gagging a little like my sister had done a few moments before. Her confidence and control were unmistakable, and it only served to heighten the intensity of the experience.
“Not a loser!” she declared. I pulled the scarf down to see her eyes sparkling with mischief, a smug satisfaction playing on her lips as she leaned back to sit on her heels, her chin glistening with the remnants of my release.
“No!” María cried out to my left. She was holding Jake’s monster with her hand partially wrapped around the base, looking over at us with a stricken look on her face. Jake looked like he was already on the verge of exploding, and he pulled his hands out from underneath his butt to grab her by both pigtails.
“Finish it, slut!” he said in his most commanding voice, pulling her back down roughly to swallow his cock again.
María redoubled her efforts, her head moving faster as she took him deep into her throat. With a final, explosive thrust, Jake came, his cock pulsing as he filled María’s mouth. She swallowed greedily, her eyes filled up with tears from the effort.
“And the loser is ... María!” Carrie announced, her voice filled with mock sympathy. “Are you going to take your punishment like a good little girl?”
María pouted, her eyes sparkling with anger. “It’s not fair. You grabbed his balls!”
“There were no rules against grabbing their balls,” Carrie said with a wicked smile. “It’s not my fault you weren’t giving it your best effort.”
“My hands are cuffed behind my back!” María continued to protest.
“Don’t worry, baby. I’m sure your punishment will be well worth it,” said Luis, smiling at his cousin. She ignored him completely, continuing to kneel there and pout.
“Ooh, speaking of punishment,” said Jake. “I know Aunt Lila was ‘not the loser’, but she still has ten licks from the paddle coming. Carrie, will you be a dear and fetch it for us?”
Carrie grinned and hopped up, running to the bedroom to get it. She soon returned with the paddle, but also had white plastic rod in her hand, which looked to be about two feet long.
“I know we said the paddle,” she said to Jake. “But I have this cane as well.”
Jake pondered things for a moment before he spoke. “I have an idea. Why don’t we let the loser take half of Lila’s licks, but use the cane on her ass instead.”
“Ooh, that’s sounds delicious,” said Carrie. “I’ve never seen anyone caned before. Will it hurt more?”
“Oh yeah,” said Jake. “Five swats with a cane and she’ll be a quivering puddle on the floor, for sure.”
“Wait just a damn minute!” María said, struggling to her feet. “I already took my licks yesterday. My ass is still burning.”
“Well, yeah,” said Carrie. “But now you’re the Loser. The Loser has to be punished, and this sounds like a great start.”
Jake took the cane out of Carrie’s hand, then started taking practice swings with it, making loud swishing sounds every time he swung it. “Come over here, Lila,” he said.
Lila didn’t say anything but put her head down and walked slowly over towards her nephew. “Assume the position,” was all he said, and his aunt dutifully bent over and grabbed her ankles.
“Wait, why is she getting hit with the cane?” asked Carrie.
“Because she’s a submissive slut and we’re both going to enjoy it,” said Jake, shooting her a smirk. “Don’t worry, you’re going to take a lick or two as well.”
“Mark! Are you going to let that happen?” she asked in a panic, looking over at me.
I shrugged. “I got no problem with it. You’re a submissive slut also, so be quiet or it may be more than a couple of licks. You understand me?”
“Yes, sir,” she said, then got quiet. I could tell she was a little perturbed, however. She kept glancing back and me and I just gave her a quiet smile.
Jake stepped behind Lila, his eyes focused on the perfect curve of her thick, juicy ass. He swung the cane a few more times, the sound echoing through the room, building anticipation. “The key is to strike with precision and control,” he explained, his voice steady and confident. “You generally want to hit the fleshiest part of the ass, just above the crease where it meets the thigh. That’s where the impact will be felt the most.”
He raised the cane and brought it down with a swift, controlled motion, the tip of the cane landing with a sharp crack on Lila’s left cheek. “Oh fuck!” she yelped, but didn’t move from her position.
“Good girl, Auntie,” Jake said, nodding in satisfaction. “The first strike is always the hardest.”
Reaching out with his free hand, he gently rubbed the angry red welt that had appeared on Lila’s ass. “Aren’t you going to thank me for that perfect stroke?”
“Thank you for that stroke, Jake,” Lila said in her quiet voice.
“You’re welcome, Auntie slut. Now, for the next one, I’ll aim for the other cheek to distribute the welts evenly.” He swung the cane again, this time landing it on her right cheek with a similar crack. Lila gasped but remained in position, her knuckles white from gripping her ankles.
“See how the cane leaves a perfect red welt? That’s the mark of a well-executed strike,” Jake continued, his voice almost clinical. “The next one will be a bit harder, to really make her feel it.”
He raised the cane higher this time, putting more force behind the swing. The cane connected with the center of Lila’s ass with a loud smack, leaving a deeper, more pronounced mark on each ass cheek. Lila let out a low moan, but Jake could see her shifting slightly, her body responding to the pain and pleasure.
“Two more to go,” Jake said, his eyes gleaming with excitement. “I’m going to alternate sides again, building up to the final strike.”
He swung the cane, landing it on her left cheek once more, the impact a bit softer this time, allowing Lila to catch her breath. Then, with a swift motion, he brought the cane down on her right cheek, the strike firm and precise. He stepped up and rubbed his hand across the welts, attempting to sooth the fiery welts.
“Sorry, Aunt Lila. I need one more. So, for the final one,” Jake said, his voice low and intense, “I’m going to give it everything I’ve got. This will be the strike that leaves the deepest mark, a reminder of who’s in control.”
He raised the cane high above his head, his muscles tensed and ready. With a powerful swing, he brought the cane down on the center of Lila’s ass one last time, the crack echoing through the room. Lila let out a loud cry, her body shuddering with the impact.
Jake lowered the cane, his breathing heavy with exertion and arousal. “There,” he said, his voice filled with satisfaction. “Six perfect strikes. The marks should last for a few days, maybe a week. A constant reminder of her submission and my dominance.” He stepped up behind her and rubbed his fingers through her slot, bringing them out to show them coated with her cream.
“Look how wet this slut is. She gets off on this shit.”
Lila slowly stood up, her eyes glazed over with a mix of pain and pleasure. She turned to face Jake, a small, submissive smile playing on her lips. “Thank you, Jake,” she whispered, her voice husky with emotion.
Jake nodded, a smug grin spreading across his face as he looked over at Carrie, daring her to challenge his authority. “Next!” he said, still staring directly at her. Carrie hesitated for a moment, but then walked over and stood in front of him. I could tell she was scared, but she was trying to put on a brave face.
“Let’s take a vote,” said Jake. “How many times should the cane taste Miss Carrie’s sweet little ass today?”
María was the first to speak up, her eyes sparkling with mischief. “I vote for five,” she said, her voice steady and confident. “It’s a good number to start with, and it gives her a taste of what she’s in for.”
Lila, still catching her breath, added her two cents. “I agree with María. Five is a solid number. It’s enough to leave a mark but not so much that it becomes unbearable.”
I chuckled, shaking my head. “You know, I’m feeling generous today. How about we go with three? That way, she can get a feel for it without being overwhelmed.”
Jake raised an eyebrow, a playful smirk on his lips. “Three? You’re going soft on her, Mark. But I respect your input. Let’s see what Luis thinks.”
Luis, who had been quietly observing, finally spoke up. “I think five is a good number too. It’s enough to make an impression without being too harsh. Plus, it’s a nice, round number.”
Carrie, her voice trembling slightly, spoke up. “I ... I think three is good. It’s a start, and I can handle that.”
Jake nodded, considering the votes. “Alright, let’s add it all up. We have three votes for five and two for three. Looks like five is the majority vote.”
Carrie’s eyes widened slightly, but she didn’t protest. “Yes, Jake. I understand.” Then she bent over and gripped her ankles tightly. I could see some shivers running up and down her legs.
Jake stepped behind her, the cane at the ready. “Remember, Carrie,” he said, his voice low and intense, “this is all about control and pleasure. Concentrate on the pain and try to send it straight down into your juicy cunt and you’ll be just fine.”
With that, he raised the cane, the swish of the air filling the room as he prepared to deliver the first strike. The cane connected with a sharp crack across her ass, and Carrie let out a loud, anguished cry, her body jerking forward. Tears immediately welled up in her eyes, and she began to sob uncontrollably.
“Fuck, that hurt!” she gasped, her voice trembling with pain and shock.
Jake paused for a moment, allowing her to catch her breath. “Good girl,” he said, his tone approving. “You’re doing great. Ready for the next one?”
Carrie nodded, her body quivering with anticipation and fear. Jake raised the cane again, this time landing it with a resounding smack on the other cheek. Carrie screamed, her legs buckling slightly as she struggled to maintain her position. Hot tears streamed down her face, and her body shook with sobs.
“It hurts ... oh my God, it hurts,” she sobbed, her voice broken and pleading.
Just as Jake was about to deliver the third strike, a stream of liquid spread down Carrie’s leg, soaking her thigh and pooling on the floor beneath her. The realization of what had happened seemed to hit her all at once, and her sobs turned into desperate, choking cries.
I stepped in, my voice firm. “That’s enough, Jake. I don’t want her to be a pain slut. I just want her to be my slut.”
Jake lowered the cane, his face expressionless, and he complied without argument. “Of course, Hoss. Whatever you say goes when it comes to her.”
Carrie, still crying and shaking, slowly stood up, her legs quivering almost uncontrollably. As she turned to face us, the wet stain down her leg was unmistakable.
“I’m sorry, Mark. I didn’t mean to let you down,” she said as she struggled to stop crying.
“It’s okay, Carrie,” I said softly, my voice gentle despite the firmness of my earlier command. “You did well. Let’s get you cleaned up.”
I guided her away from the group, and Lila joined to take her other arm. As we walked, I couldn’t help but feel a mix of concern and satisfaction. Concern for Carrie’s well-being and satisfaction that I had intervened at the right moment, ensuring that her experience remained within the bounds of what I deemed acceptable.
We got Carrie into the master bathroom, and as soon as the door closed behind us, she turned and gave me an amazing, long, deep kiss. When she pulled back, she was grinning. “Do you think we messed with Jake enough?” she asked. Lila was showing a grin like the Cheshire Cat as well.
I was stunned. “Holy shit, was that all an act?”
“Some of it,” said Carrie. “That cane fucking hurts, but I did pour it on extra thick after me and Lila talked about Jake this morning in the shower.”
“So, you were just fucking with Jake? That’s amazing,” I said with a chuckle.
“Jake gets too big for his britches sometimes,” said Lila. “I used to change his diapers, so I know.”
“Peeing down your leg was a really nice touch,” I added.
“Maybe,” said Carrie. “If I’m being honest, I didn’t really plan that part.” She grabbed both of her ass cheeks and rubbed them with a wince. “That cane is bullshit. It hurts too much!”
I looked over at the big clawfoot tub that was on a stand by a big picture window. “Why don’t we get you a nice bath drawn, then you can soak your sore ass for a while.”
We started filling the tub and Lila added a bath bomb she found in the closet next to the sink. Carrie lowered herself into the tub with a sigh, then I took Lila by the hand and led her back into the bedroom. I pushed her back onto the bed then I crawled up until I was on my knees between her spread thighs.
The quiet woman didn’t say anything and neither did I as I pushed her legs back until her ankles were on either side of her head. I moved forward until her legs were running up my chest and I could feel her wrap her ankles around my neck. She was looking off to the side, so I reached down and pinched one of her nipples really hard.
“Hey,” I said. “Look at me.” I could tell she didn’t want to, but when I started squeezing the nipple harder, she made eye contact finally. “I’m going to fuck you now,” I continued. “If you look away from me, I will go out and get the cane and use it on your tits. Do you understand me?”
“Yes, Mark,” she said in an almost whisper.
“Say it louder,” I said. “I want to be able to hear you.”
“Yes, Mark. I understand,” she said in a normal speaking voice.
I looked down into her beautiful eyes, smiling despite trying to maintain a dominant attitude. “Damn, you are beautiful,” I said. “Plus, you fit me just like a glove. Your body is perfect for fucking.”
She smiled but suddenly got shy again and started to look away. I squeezed her nipple again and said, “Hey! I said not to look away from me. I want to look into your eyes while I slide into you.”
“I’m sorry, Mark. It’s just hard. I’m not used to it.”
I let go of her nipple and used that hand to reach down so I could slide the tip of my cock through her outer folds a few times. Her pussy was already dripping wet, and my cock had a big drop of pre-cum on the tip. Lubrication was not going to be an issue.
“I do want to apologize for something,” I said. “Normally I would eat your amazing pussy for at least an hour before I stuck my dick inside you, but I just want to have a quickie this time.”
Lila looked up at me and smiled. “It’s okay, Mark. I like your cock, so just sticking it in me will be fine.”
I very slowly lowered myself down on her legs, pushing them back more and letting my cock slide in about halfway. Lila’s eyes closed about halfway themselves, in obvious pleasure. I stopped and let my shaft soak in her warm, grasping cunt for a few moments, then slowly slid it back out until only the tip was inside.
“Oh, there was one more thing.” Lila looked like she might be slightly frustrated, which was fine because I was teasing her a little.
“What is it, Mark?”
“Well, I don’t know if Jake told you, but he offered to let me and Carrie live in an old farmhouse up on his ranch while I learn how to be a ... uh ... cowboy. He also said you were nearby and might be interested in ... continuing our activities. Is that true? Would you still like to do stuff with me and Carrie?”
She stared back at me in silence as a few heartbeats went by. Finally, she spoke. “Are you really going to have babies with Carrie?”
“Oh yes,” I replied almost instantly. “There’s nothing I want to do more than put babies on her. I think it turns both of us on ... a lot.”
Lila smiled up at me. “If that’s true, then I want to be Carrie’s doula and help her take care of the babies when they’re born. I’m licensed in Oklahoma and have helped several women in our tribe give birth.”
“Well ... I’m not exactly sure what a doula is, but if Carrie’s okay with it then it’s fine with me.” I lowed myself almost all the way back inside her, then back out again.