[Having sex with one's sister-in-law on a bus] [Author unknown]

This post was last edited by Dongpiaoxidu on 2009-5-31 21:31.

My sister-in-law has been studying at university in Beijing for three years, and this was only the second time I'd seen her. She's really grown up so much, even more beautiful now! She generously congratulated me, saying I was amazing for having a big, healthy son. I thought to myself: My little brother is the amazing one, too bad you haven't had a chance to experience it.

My mother-in-law was busy looking after her grandson, and my sister-in-law was also on the edge of the bed looking at her nephew, her full buttocks facing me, revealing a faint outline of her underwear. Damn, it's been so long since I've done *that* with her sister, this is making me uncomfortable. I pretended to look at my son, rubbing my hard little brother against her buttocks, my hand casually brushing against her buttocks. Ah, so comfortable.

After dinner, my mother-in-law said she wanted to stay and take care of my wife for a few days. Since my house is small, she told my sister-in-law and me to go back to her house to stay, saying I should rest for a few days and take care of my father-in-law. I was secretly pleased. Just before leaving home in 2020, my wife playfully warned me not to bully her sister. I readily agreed and went out with my sister-in-law. I really wanted to "dominate" her.

On the way, I followed her at a distance, my eyes glued to her full buttocks. Her rounded hips swayed from side to side as she walked, a truly rare and alluring sight. Her legs, free of stockings, were snow-white and long. Imagining what she would look like naked, my manhood unconsciously hardened. I subtly adjusted my clothes to avoid pitching a tent in the street.

We followed her to the nearest bus stop. The bus slowly pulled up... Looking out onto the bus, all I could see was a dense, dark mass of people.

Without a second thought, a huge crowd surged towards the still-moving bus. My sister-in-law was also caught in the throng, pushing her

way towards the door. I quickly used all my strength to squeeze behind her. Amidst the complaints behind me, I finally managed to squeeze onto the bus, right behind her. Because it was Sunday, the bus was unusually crowded, truly shoulder to shoulder. The doors finally slammed shut, and the bus started moving. People struggled to adjust their positions amidst the jolting. Soon, the crowd settled down, and I remained tightly pressed against my sister-in-law's back, surrounded by people on all sides. It was an impenetrable human wall. At first, I just pressed my body against her back. She was about my height, and her buttocks were right at the triangle area of my lower abdomen. Using the swaying of the car, I moved my hips, my already hard penis rubbing against the cleft between my sister-in-law's buttocks. Through the thin clothes, I could feel the warm, fleshy texture of her body.

Since my wife gave birth, I hadn't touched a woman. Emboldened by lust, I gradually increased the pressure, pressing my hips forward against her full, soft buttocks. My hard penis began to wriggle up and down and side to side in the cleft of her buttocks. I could feel the tender flesh of my sister-in-law's buttocks. I spread her legs apart. Normally, under this pressure, she should have noticed, but in such a crowded situation, it couldn't be considered intentional molestation. I gradually grew bolder, then swayed my hips, my lower abdomen pressed tightly against her buttocks—essentially a rear-entry position, only without actual penetration.

I then boldly squeezed her full buttocks, encased in her white skirt, with my hand. Suddenly, my sister-in-law turned her head, her brows slightly furrowed. Our eyes met, and my heart pounded. Just as I was about to remove my hand, she blushed and whispered, "Brother-in-law, please be gentle with me,"

before quickly turning her head away. I whispered back, "There are too many people, I can't help it." "

I secretly observed her face, half-hidden by her long hair, and it was obvious that her face had turned crimson. At this point, I began to caress her more boldly, my hands encircling her smooth thighs from both sides, my fingers slowly slipping under her short skirt along the outside of her thighs. Under the cover of the crowd, no one would notice my actions. As my caresses grew increasingly unrestrained, my sister-in-law gradually stopped her futile struggles, and I could feel her body trembling slightly. Hehe… I gradually increased the intensity, my hands, hidden under her skirt, pressing against her plump buttocks, completely exposed outside her panties, teasingly caressing them." Touch.

My sister-in-law tightened her legs, silently enduring my harassment. I gradually lowered my guard, wantonly playing with her body. One hand continued to caress her buttocks, while the other reached forward, advancing upwards. Because she was holding the handle with one hand, it was easy for me to touch her full breasts. I continued moving my palm upwards through the gap until I could completely grasp her nipples, then kneaded them forcefully—perfect! My other hand also reached forward, roughly slipping under her other armpit, grabbing both breasts simultaneously, playing with them with abandon.

I touched her for about a minute. Seeing this, I began my assault more aggressively, slipping my hands under her t-shirt and first caressing her smooth abdomen. Perhaps due to the heat and her nervousness, her skin was glistening with sweat. Her t-shirt, clearly offering no respite, instead served as cover. When I grasped her large breasts again, the sensation was indescribable. I leisurely savored the exquisite feel of her breasts, while twisting her nipples with my fingers. The nipples were about the size of peanuts; I could almost feel the tiny folds on them. Soon, I clearly... I noticed her tender, soft nipples beginning to harden.

Throughout this process, except for a few slight squirms when I moved too vigorously, she remained perfectly still. My palm was on her lower abdomen, my fingers teasing her mons pubis. Under such bold caresses, she began to wriggle again. The car drove a few dozen meters before screeching to a stop. I was no longer satisfied with just her breasts.

So, my left hand continued to alternately knead her two bare breasts under the cover of her t-shirt, while my right hand recklessly rubbed her vulva through her panties, my hands simultaneously clamping her body from above and below. I gently rolled up her skirt, touching her sensitive areas. My sister-in-law seemed startled by my bold harassment, glancing back at me several times. I pretended to look out the car window, ignoring her.

She tried to cover herself several times with her plastic bag, but each time her hand touched mine, she panicked and pulled away. In this half-hearted attempt, I rolled her skirt completely up to her waist. I glanced down, and my sister-in-law's bare buttocks were immediately revealed, pink panties tightly hugging her two snow-white buttocks. I suppressed my wildly beating heart and quickly pressed my body against hers to prevent being discovered. This time, I quickly rolled up her skirt, stroking her while pressing my body tightly against hers, my erect penis rubbing against her soft buttocks through the thin white skirt.

I figured the next stop wouldn't be so soon, so I decided to take it a step further and enjoy this "feast" that was already at hand. I temporarily released her breasts, reaching down and discreetly pulling her panties to one side, completely exposing my sister-in-law's buttocks. I directly stroked the smooth skin on both sides of the cleft with my hands, my fingers lewdly grasping her buttocks and spreading them apart, my erect penis squeezing deep into the crevice. Through my pants, I pressed my penis against my sister-in-law's completely naked anus, writhing in sexual motions, fully enjoying her round, soft buttocks.

Driven by lust, I didn't hesitate; I unzipped my pants, pulled out my throbbing, hot penis, and pressed it directly against her buttocks. She turned and glared at me, then hurriedly looked around, afraid someone would see. I didn't care anymore, thrusting forcefully inside. The moment I touched that soft, warm flesh, I felt my blood rush to my head, my penis throbbing, almost ejaculating.

I immediately stopped, pressed myself against her body, and composed myself. I suppressed the urge to ejaculate. I wrapped my arms tightly around her buttocks from the sides, leaned forward, and pressed my entire body against her back, using my body to cover her bare buttocks. I glanced around; although it was unlikely anyone would notice my actions, I still wanted to confirm before I felt at ease. I leaned over to observe my sister-in-law's expression while continuing to slowly and firmly knead her plump buttocks, fully enjoying the smooth and elastic feel of her skin. When I touched the side seams of her panties, I suddenly noticed knots on both sides. Wow, so that's what kind of underwear it is! A bolder idea immediately popped into my head.

Originally, I only intended to touch her a few times and be done with it, because taking off her panties would be too much of a movement, and people would notice if they moved. But since it was this kind of panty, I immediately changed my mind, untied the knot, and the panties came off instantly.

My sister-in-law realized her panties were being taken off and immediately panicked, squeezing her thighs together to try to stop me. But I wasn't about to give up. I quietly stuffed the panties I'd taken off into my pocket. At this point, her body under her outer clothes was completely naked. I pulled down her skirt, covering my hands and penis, and gently pinched her vulva with my hands, my fingers tracing the tender cleft. I straightened up and forced my hot penis between her tightly closed thighs, pulling her body back with both hands, rubbing my penis back and forth in her buttocks for a while. Then I hugged my sister-in-law's waist tightly, and reached my hands into the base of her tightly closed thighs from the front, touching her delicate petals, and immediately found that the two tender flesh there were wet and slippery...

Wow! Could it be vaginal fluid? Judging from its stickiness, it was definitely more than just sweat. I gripped the tender flesh of her inner thighs tightly, trying to pry her tightly closed legs apart. She made a final, desperate struggle, but I still managed to insert my penis between her thighs simultaneously. The next step was to hold her buttocks tightly and twist my waist in a circular motion. My penis was firmly gripped by the tender flesh at the base of her thighs, the glans rubbing against her soft, wet petals.

I moved my body back slightly, simultaneously holding her waist, causing her buttocks to protrude backward. My penis pressed against her beginning to open petals. Because it was so slippery, and her vaginal opening was very small, I tried several times to insert it without success. So, I held her waist with one hand to stabilize her body, and with the other hand, I reached from the front to her vulva, using my hand to guide my penis until it finally entered her narrow vagina. After achieving my goal, I suppressed the overwhelming pleasure and began to thrust rhythmically with small movements. Although I couldn't fully penetrate, the feeling of my glans being tightly gripped by her smooth muscles still excited me to the point of almost fainting...

As the carriage swayed, I gradually increased the intensity of my movements. One hand wrapped around her waist and pulled her back forcefully, while the other hand grabbed her full breasts from under her clothes. I thrust my hips forward, forcefully penetrating deep into her body. My sister-in-law's plump buttocks were pressed tightly against my abdomen. Even through her clothes, I could feel the soft flesh of her buttocks being deformed by my pressure. I paid attention to the swaying of the carriage, and whenever there was a significant sway, I would quickly and forcefully thrust several times. If we were both naked, her buttocks would definitely make a "slap slap" sound from my thrusts!

I thought to myself, it's hard to imagine that such a situation could occur. On the crowded bus, I was embracing my sister-in-law, a beautiful female college student with her bare buttocks...

Finally, the bus stopped swaying, and with a dull screech of brakes, the bus arrived at the station. I quickly snapped out of it and hurriedly pulled out my penis. As my still-erect penis left her vagina, it felt like pulling out a bottle stopper; with the separation of our bodies, there was a slight "pop" sound, and her vagina closed tightly again, just like before. The flow of people began to move, and I quickly straightened my clothes, of course, pulling down my sister-in-law's skirt as well. Her panties were still in my pocket; I didn't have time to return them to her! I'd deal with it when we got home.

As soon as we got off the bus, she hurried forward, occasionally looking back at her buttocks to see if there were any signs of intimacy. I caught up with her in a few steps and apologized, saying, "I'm sorry, I haven't been able to touch your sister in a long time, I was a little impulsive, and I couldn't resist seeing you..."

She shyly pushed me away with a half-smile and said, "Give me back my panties, and quickly find me a public toilet; I can't leave yours in there..." This post was edited by Zero Degrees of Longing on 2015-09-19 at 10:08.

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[Having sex with one's sister-in-law on a bus] [Author unknown]

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