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slutty sister-in-law 

This post was last edited by hm566 on 2021-02-19 at 19:21

. A considerable amount of time has passed since I started having an affair with my sister-in-law. During this time, I would rekindle our relationship whenever I had the chance. A few days ago, my sister-in-law brought her daughter back to her hometown and they stayed at my house again. The little one is already 3 years old and quite adorable.

However, she almost caused me a disaster once. When my wife wasn't home, my sister-in-law would occasionally call me "husband." The little one is at an age where she loves to imitate, and that time, with my wife and mother-in-law present, she blurted out "husband!" My sister-in-law and I were stunned. My wife and mother-in-law laughed, asking who taught her that. My sister-in-law lied and said she taught her just for fun. I broke out in a cold sweat; it's true what they say, a guilty conscience is a guilty conscience.

One day, I was resting at home, and my wife was working the night shift, so it was just my sister-in-law and her daughter at home. Seeing my chance, as soon as my wife left, I ran to my sister-in-law, put my arm around her waist, and groped her breasts, saying,

"Hey sis, let's do something tonight. It's rare that it's just the two of us since your sister isn't here." My sister-in-law hadn't done anything with me since she came all this time. She looked at her daughter and said, "No, my daughter's here, and my period's almost here." I was so eager, I wasn't going to give up so easily, so I continued, "Your period's almost here, but it hasn't come yet. You can wait until your daughter's asleep." My sister-in-law hesitated, a little tempted, but then she threw out a line: "If you want to do *that*, I'll give you a riddle. If you can answer it in 10 minutes, I'll agree." I was stunned! How did it suddenly turn into a paid service? After my attempts to bargain failed, I had no choice but to agree.

So my sister-in-law gave me the riddle: "A virgin her whole life, guess a name. Brother-in-law, the timer's on!" Ugh, this seems familiar, but I can't remember where I've seen it before. Three minutes passed and I still had no clue. My sister-in-law smiled and said, "Brother-in-law, how's it going? You have seven minutes left." A thought suddenly struck me, and I finally had an idea. So I said I'd think about it, went into my room, quickly took out my phone, and used UC Browser to access Baidu Knows. There's a saying: "At home, rely on your parents; when you're out, rely on Baidu." That's so true; in today's society, you have to be fast when looking for information. Two minutes later, I found the answer. I thought, "This is how I solve this riddle.

" So I went out and said, "Sister, I know!" My sister-in-law looked at me expectantly with a smile and said, "Brother-in-law, tell me the answer." I replied, "Picasso. Sister, you're getting more and more lewd..." My sister-in-law had nothing to say then and could only agree to let me have my way after her daughter fell asleep that night, haha.

The tragedy was, my niece was quite uncooperative at this point. Even at ten o'clock at night, she was still full of energy and showed no signs of wanting to sleep. I was so anxious! Luckily, my sister-in-law thought that not going to bed early was bad for a child's intellectual development, so she dragged her into bed and forced her to sleep. Seeing that the time was almost right, I quickly ran to take a shower and do some personal hygiene.

After a hurried shower, I found that my sister-in-law had almost soothed her daughter, patting her gently to comfort her. I seized the opportunity to jump onto the bed and hugged my sister-in-law from behind, beginning to enjoy the mature woman's body in my arms.

Reaching inside her clothes, I groped upwards from her waist, discovering that she had removed her bra. I slowly climbed up to her breasts, enjoying their soft yet firm flesh. While she was comforting her daughter, I began to caress her. I gently rubbed her nipples with one hand, while the other hand groped between her hips, and I lightly nibbled on her earlobe from behind.

My sister-in-law started to react; I could clearly feel her nipples slowly swelling. So I cupped her breasts and began to knead them vigorously. When passion begins, vigorously squeezing her breasts is something I enjoy doing. I pulled up her shirt, exposing her beautiful breasts to the air. My sister-in-law's breathing gradually became rapid. She released her daughter, one hand holding my head, and began to kiss me back. I followed suit, kissing her alluring red lips, my tongue exploring her mouth to taste the sweet saliva.

After a long kiss, my sister-in-law whispered, "Brother-in-law, let's go to your room. It's not convenient with my daughter here." I thought for a moment, chuckled, and said, "No, let's do it here. Let my niece see how I'm messing with her mother." My sister-in-law rolled her eyes at me but surprisingly didn't object. She simply turned around and continued our passionate kiss.

So I flipped her over and began my all-out assault. My sister-in-law's back is quite sensitive; if I touch it well, she gets aroused quickly. I held her body and began teasing her smooth, silky skin. My sister-in-law started to retaliate, taking off my bra, sucking on my nipple, and gently biting it. It felt good, but I was a little ticklish, so I endured and continued my assault, slipping my hand inside her panties. It

was only slightly wet. My sister-in-law was indeed a seasoned veteran; she wasn't easily aroused. I started to doubt the reality of those mature women described in books who get wet at the slightest touch. With so much experience, one should have developed immunity; to orgasm so quickly requires a special constitution.

At this moment, my sister-in-law also slipped her hand inside my panties, grasping my penis and starting to stroke it. I felt a surge of pleasure as my sister-in-law's small hand parted my foreskin and began playing with my glans. Since my sister-in-law had started to take advantage of me, I didn't hold back. I quickly pulled off her thermal underwear and panties, heading straight for her sensitive areas. I parted her labia and gently rubbed between her labia majora and minora with my fingernail. My sister-in-law's body is a bit unusual; her clitoris, which is usually very sensitive to most women, wasn't very large, so I had to be slow and careful.

After a while, her genitals began to get wet. Then I whispered in her ear,

"Sis, lick your brother-in-law." My sister-in-law blushed but nodded slightly. I sat up, and she knelt down in front of me and took my penis into her mouth. While her oral skills weren't exactly professional, they were quite good for an amateur. Under her careful licking, my penis grew thicker and harder. Watching my sister-in-law rub my scrotum while sucking and swallowing, having such a beautiful woman serving me so attentively was beyond words.

At this moment, my sister-in-law spat out my penis and continued to stroke it back and forth with her hand, looking at me and saying, "Brother-in-law, help me too." So I pressed her down again, spread her thighs, rubbed her vulva a few times, and began to insert my middle finger into her body.

"Oh..." my sister-in-law let out a groan.

Actually, I knew that she quite liked having her vagina played with by fingers. And her most sensitive spot was her G-spot; as long as I stimulated that spot, she would quickly get aroused.

I first used my middle finger to slowly move in and out of her vagina, occasionally rubbing her G-spot. My sister-in-law began to twist her body; she wanted more stimulation. When the vaginal walls slowly softened, I joined the battle with my ring finger and began the final assault. I had read many textbooks on squirting, but unfortunately, I had never succeeded in applying them in practice. At this time, I also ruthlessly rubbed and massaged my sister-in-law's rough area from slow to fast. My sister-in-law immediately became excited; every woman has her weak spot, hehe. The temperature and density of her vaginal fluids increased rapidly, and soon my sister-in-law grabbed my arm, begging me to stop. Her cheeks flushed, she said,

"Brother-in-law, I want it, give it to me." She was finally getting into it.

I glanced at my sleeping niece beside me, then grasped my already throbbing, hot penis, aiming it at her entrance. I thrust it in forcefully. My sister-in-law let out a soft "ooh," and wrapped her arms around my waist. At that moment, I thought for a moment and asked, "Should we use a condom?" Deep down, I was extremely reluctant, but for safety's sake, I had to ask. After all, if our relationship were exposed, it wouldn't be a small matter. Besides, there was precedent; my wife and I had sex once, and I even withdrew, but she still got pregnant. So, not using a condom isn't safe, guys.

My sister-in-law said, "No need." Under my questioning gaze, she explained, "My husband has a high sex drive, and we've spent all our money on condoms. I got an IUD recently." Hearing this, I was overjoyed, and my penis inside her swelled even more. In my mind, only unprotected sex with ejaculation inside is real sex; I'm a believer in internal ejaculation. This meant that from now on, I could ejaculate directly inside her during sex—amazing! Brother-in-law, I love you!

But out of concern, I had to ask, "Don't you want children anymore? You can still have one." My sister-in-law looked at me suspiciously and said, "You're so stupid. You can get an abortion when you want a child. I'm not sterilized." Yes, I was so happy, I was stunned.

I began to thrust in and out of my sister-in-law's warm, moist vagina. My sister-in-law's vagina was as comfortable as ever. As I worked on her, I played with her breasts and whispered seductive words in her ear.

"Little sister, your brother-in-law is here to suck your blood." With that, I started biting into her carotid artery. My sister-in-law's moans grew louder. I nibbled lightly and forcefully at her snow-white, sexy neck, sometimes even leaving faint teeth marks. Excitedly, she wrapped her legs around my waist. I shifted my thrusts downwards. But honestly, I didn't dare bite too hard. First, it was a relatively dangerous area; passion shouldn't be risked with one's life. Second, if I left obvious teeth marks, my wife would see them, and that would be terrible.

Unconsciously, our movements became more and more frequent. I suddenly realized that my niece had woken up sometime during the night. She was looking at me and her mother's intertwined bodies with her innocent, big eyes. Instinctively, I slowed down. And I said to my sister-in-law, "Your daughter's awake." My niece looked at me and called out, "Uncle-in-law (that's the local dialect)." I could only look at her, then at my sister-in-law, asking her with my eyes what to do.

I never expected that a woman experiencing pleasure could be even more frenzied than a man. My sister-in-law actually covered my mouth with her own and continued to writhe.

I thought, "This is so good! Having sex with you in front of your daughter, it feels a bit like a Japanese movie." So I started to penetrate her even more vigorously. But because her daughter was watching, my sister-in-law held back and basically stopped moaning. What a pity. Why didn't she let her daughter hear it? Sex education should start from a young age. I was shameless... Perhaps it was because the environment was so stimulating, but I quickly got aroused too, so I started to thrust into my sister-in-law's body at full speed. The "slap slap" sound of flesh colliding followed, and my sister-in-law finally couldn't help but let out a soft moan. Looking into my niece's innocent eyes and my sister-in-law's face contorted slightly as she approached climax, I finally thrust my penis deep into her vagina, ejaculating thick semen that stained my sister-in-law's wanton womb.

Perhaps we had used too much force at the end, because my niece suddenly opened her mouth and burst into tears. We both panicked for a moment, forgetting the exhaustion after our orgasm, and I quickly picked her up and handed her to her mother, who then began to comfort her.

At that moment, I thought to myself, my niece is quite considerate; if she had cried right before her orgasm, I think I would have cried too… After a while, my niece finally fell asleep again. I felt too embarrassed to ask for a second round, so I gestured to my sister-in-law that I should go back to sleep, kissed both mother and daughter, turned off the light, and left the room.

Another time, I had just arrived home when I found the door ajar. My heart skipped a beat; had a thief broken in? I rushed inside to see what was going on.

I was shocked to hear strange noises coming from my bedroom as soon as I entered. Listening closely, I realized it was the sound of a man and woman making love. I froze. Had my wife cheated on me? A surge of anger welled up inside me, my hands trembled uncontrollably, and I imagined storming in and beating the adulterer.

But then I realized something was wrong. Listening more closely, I realized it wasn't my wife's voice. And then I heard it was my sister-in-law's! Damn it, that slut! She'd taken over my and my wife's room to seduce other men… Relieved, my heart began to stir. Although I was having an affair with my sister-in-law, I could accept seeing her with another man; in fact, I found it exciting. To put it simply, I had sexual desire, but not much possessiveness. I took off my shoes and crept inside, trying to figure out how to see what was happening. Suddenly, it occurred to me: I might be able to see through the window in the yard. Because my house is on the ground floor with a fairly large yard, and the bedroom window faces the yard, you can see inside if the curtains aren't fully drawn. I cautiously crept into my house, listening to my sister-in-law and the man's lewd moans.

I finally reached the yard, only to find they had the curtains completely drawn. Damn it! Were they really going to let me hear but not see? That's suffocating! Luckily, after careful observation, I noticed the window lock wasn't engaged.

I thought to myself, "Luckily!" and quietly moved the window a little, without making a sound. Then I carefully parted the curtains again. The scene inside the room came into view. My sister-in-law and a pot-bellied man were entangled in a sexual act.

The man was standing by the bed, violently thrusting into my sister-in-law from behind. The man was holding up one of his sister-in-law's thighs, forcing her legs wide open. Her left leg supported her weight on the edge of the bed, while her right leg was bent forward, her right foot resting on the edge, creating a somewhat bow-like stance. Her arms were being pulled by the man, causing her large breasts to sway wildly. A mini-pleated skirt was even hanging from her waist. Damn, I'd helped her buy that skirt; it cost over two hundred yuan. She'd worn it before to seduce me. Now, seeing her in that sexy little skirt, half her buttocks exposed, being vigorously penetrated from behind, a slow, burning heat rose within me. It was strange; if it were my wife inside, I'd have rushed in and fought that man to the death. But now it was my sister-in-law, and I felt no jealousy whatsoever. In fact, I secretly hoped the man would go at her harder; the more intense it was, the more entertained I'd be.

The sounds of flesh slapping against flesh echoed continuously from inside the room. I noticed that my sister-in-law's labia majora were red, swollen, and even somewhat blackened. Damn it, she definitely hadn't done it more than once. The man's glans was large, making his entire penis appear larger. When he thrust hard into my sister-in-law's vagina, her labia were pulled inward, enveloping the base of his penis. When he quickly pulled out, her labia minora also turned outward. Perhaps due to the debauchery of her sex life after her divorce, her vulva was no longer the pinkish color I remembered from the first time I saw it. The outer edges of her labia were faintly blackened and slightly loose, looking somewhat wrinkled.

At this moment, the man's thrusting speed noticeably increased. After a series of violent pounding, he pressed his penis firmly against my sister-in-law's plump buttocks, pouring all his thick semen into her uterus. Then, the two of them collapsed onto the bed, breathing heavily. The man lay on his back and said to his sister-in-law, "ZXY, you have to help me clean up, right?" What did that mean? Clean up what?

Unexpectedly, the sister-in-law got up from the bed, knelt between the man's hairy thighs, and began to clean the bodily fluids off his penis with her mouth.

You're so shameless... Seeing this, I couldn't help but release my already throbbing penis from my pants and start masturbating.

The sister-in-law diligently licked the man's dirty penis, her slender hands massaging his dark testicles.

The man lay leisurely on the bed, his hands behind his head, watching his sister-in-law serve him.

Unexpectedly, his penis soon became hard again, and the man slowly moved his hips to allow his penis to enter his sister-in-law's mouth deeper. Perhaps feeling it wasn't enough, he stood up again, grabbed his sister-in-law's hair, and began to fuck her mouth like a vagina.

My beautiful sister-in-law was kneeling at the feet of an ugly, fat man, being humiliated like a sex slave. My hand, stroking my penis, couldn't help but quicken its pace. I regretted not having a camera to capture this wicked scene; my G12 was in the bedroom, and I couldn't get it out. What a pity! I could only use my phone in camera mode, placing it by the window, not sure if it would turn out well, since the room was a bit dark.

Then, an unexpected thing happened. I heard the front door slam shut, and my sister-in-law and the man jumped in fright. Someone had come in!

In a flash, I made a decision: I should help my sister-in-law, after all, I was having an affair with her too.

I rushed through the yard and headed towards the gate. It was my father-in-law, still taking off his shoes. Luckily, I made it in time. I went up to him and called out, "Dad." My father-in-law saw me and said, "LX, are you off today?" "Yes, I just got back a little while ago." "Where's XY? Shouldn't she be with you?" My father-in-law asked about my sister-in-law. I had no choice but to lie and say,

"She played too late last night and is still sleeping." My father-in-law obviously didn't suspect anything. If he had gone to check, he might have given himself away. After all, my sister-in-law wouldn't be able to clean up the mess so quickly, especially with such a big man around.

My father-in-law took some tools from our house, sat for a while, and then left. I saw my father-in-law to the door, and not long after I turned around, the bedroom door opened, and the man came out disheveled, gave me a sheepish smile, and quickly slipped out.

I closed the door, thought for a moment, and locked it. Then I slipped into the bedroom and closed the door behind me.

My sister-in-law was hiding under the covers, blushing and smiling at me.

I said helplessly, "Still laughing? See what happens when your dad catches you." My sister-in-law said to me coquettishly, "Brother-in-law, I'm so grateful to you today." I couldn't help but scold her, "You're really bold. Even if you're going to seduce a man, you should go to a hotel. You dare to do it at home? Do you think nobody comes here? Even though you're divorced and single now, if anyone finds out about what you've done, you're finished." My sister-in-law pouted and said, "Brother-in-law, don't forget you're involved too. And you're still me." I was silent, speechless... My sister-in-law got out of bed, still shirtless, wearing only a mini-skirt. She leaned against me and wrapped her arms around my head, saying, "Brother-in-law, when did you get back today?" I said irritably, "I got back a while ago. I saw you being fucked to death." My sister-in-law looked at me with her big eyes and leaned even closer to me. Then she reached out a hand and sneakily slipped it between my legs. I hadn't ejaculated while masturbating, and I'd even forgotten to close the door. My sister-in-law barged in and grabbed my manhood. The stimulation from before was still fresh, and now with her grabbing it, I let out a low groan.

My sister-in-law gently started stroking it, saying, "Brother-in-law, it's still a little wet. Did you masturbate?" "I didn't ejaculate. Your dad was just about to come. How are you going to make up for it?" "Whatever you want me to make up for it." My sister-in-law started seducing me again.

Seeing my sister-in-law being treated like this by a strange man today, I started to get rough too. I suddenly pushed my sister-in-law down on the bed and spread her legs. Not long after our passion, my sister-in-law's genitals were still somewhat moist. Her labia were drooping slightly, and upon closer inspection, the labia, which had been excessively engorged for a long time, had indeed begun to turn from red to black, and the wrinkles were quite obvious, somewhat like an old person's wrinkles.

"You slut, when did your pussy get so dark!" I swore, slapping my sister-in-law's plump buttocks hard.

"Ah! Brother-in-law, be gentle..." My sister-in-law blushed and begged for mercy.

I'm usually quite gentle, but today I had a fire burning inside me. I spread my sister-in-law's legs wider and thrust my middle finger into her pussy, pumping it in and out.

My sister-in-law cooperated by raising her buttocks, exposing her most private parts to me.

"There's something sticky inside, is that man's semen?" I asked.

"Yeah, he came three times inside just now," my sister-in-law answered honestly.

Damn! Hearing that, I lost interest in putting my penis in. I felt a little disgusted, like I was using someone else's leftovers. So I pulled my finger back. My sister-in-law asked, "Brother-in-law, you don't want it anymore?" I replied, "Forget it for today. You should go wash up and repay my favor next time." At that moment, I saw a hint of hurt in my sister-in-law's eyes, which made me hesitate. But I thought better of it. I really didn't want to penetrate a slippery place and wait for the semen to turn into water. Besides, the psychological aspect was the key.

To comfort my sister-in-law's hurt heart, I gently pulled her into my arms and kissed her cheeks and lips.

My sister-in-law looked at me with those alluring eyes and said, "Brother-in-law, how about I give you oral sex?" I thought about it and agreed. So my sister-in-law pulled my pants down to my knees and took my penis into her mouth. At this moment, I remembered the scene from earlier and became excited. I said to my sister-in-law, "Can you give me oral sex like you did for that man earlier?" My sister-in-law hesitated for a moment and nodded.

She knelt in front of me and began to give me oral sex. I became instantly aroused, grabbing my sister-in-law's head with both hands and thrusting my penis into her mouth like a vaginal canal.

Her warm mouth and slippery tongue stimulated my senses, and I couldn't help but speed up, increasing the intensity. I was sure I was almost at her throat. Her face was flushed, clearly in pain, but I couldn't care less. I increased the speed even as she coughed. In a frenzied assault, I held her head tightly and shoved my penis down her throat, ejaculating. She

struggled, struggling to breathe, clearly choking. I released her, but before pulling out, I told her, "Swallow it, don't spit it out!" Despite the pain, she swallowed the semen. Then she coughed violently. This was the first time she had ever tasted my semen.

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