The allure of vibrating eggs

When my wife and I were newlyweds, we lived at her parents' house because of our work. Her house was large, a military-grade residence in a military dependents' village, with a small courtyard that encompassed the entire second floor. The first floor had a living room, kitchen, a Japanese-style room, and my parents-in-law's room. My wife and I had our room on the second floor, as did my sister-in-law, who was a sophomore in college at the time. She used the Japanese-style room downstairs almost exclusively. The second floor also had my father-in-law's study. My father-in-law was 55 years old, a retired general. After his retirement, his company often required business trips and social engagements. Whenever he was home, I would pick him up from his social engagements two or three days a week. My mother-in-law was 48, a housekeeper, a typical military dependents' village wife, who often played mahjong. My wife and I had both recently graduated from university and were working for nearby companies. When my sister-in-law is away, I use her Japanese-style room for work. My father-in-law's study is always locked, and my wife tells me not to go in there. I asked her why, and she said maybe there are some secrets, but just don't go in. I follow that rule. One morning in July, after arriving at the office, I found the entire case file I'd worked on the night before in the Japanese-style room. I wanted to go home immediately to get it, but the office was busy that morning. I thought about asking my sister-in-law, who was on summer vacation, to bring it to me, but her phone was off. Around 2 PM, I decided to go back and get it myself, hoping to get it before leaving work. I opened the silent front door and entered the quiet yard, only to realize I hadn't brought my house key. There's a key hidden in a potted plant outside the front door, and I usually use that key. With no other option, I went around to the backyard to see if my mother-in-law had forgotten to lock the back door when she went out to play mahjong. As I walked to the hallway by the window outside my mother-in-law's room, I heard a series of moaning sounds, "Hmm... Hmm... Ee... Ee..." I was stunned. My mother-in-law should be playing cards now; there shouldn't be anyone at home!

Could it be my sister-in-law? No wonder her phone wasn't being answered. My sister-in-law is young and beautiful, and she's my dream girl! Judging from that lewd sound, it must be the moans of a woman masturbating. In a split second, I decided to eavesdrop and peek, not wanting to disturb my lewd sister-in-law. I slowly approached the window of my mother-in-law's room. The yard wall was high, and trees taller than the wall surrounded the area, blocking their view from the outside. The trees also provided excellent soundproofing. I crouched down and peered into the window. The curtains weren't fully drawn, as was their usual habit. The room was a bit dark, and there was a screen on the outside, so I couldn't see clearly at first. But once my eyes adjusted to the darkness, I looked closely—wow! My heart nearly jumped out of my mouth—the person inside was my mother-in-law! My heart was pounding wildly. My mother-in-law, though past her prime, had fair skin and looked remarkably young. She usually presented herself as a dignified and refined official's wife, and even I, her son-in-law, had suffered quite a bit before marrying her daughter. I never expected her to present herself to me in such a lewd manner. My father-in-law had been discharged early from the military, receiving a generous monthly pension. His current company offered excellent benefits, and his years of military service had given him good physical condition. Why would my mother-in-law need to masturbate? Was she a sexually insatiable woman? But my parents-in-law were always so loving! I couldn't see it at all, and I couldn't understand it. The sounds of moaning and groaning continued to emanate from inside. Although it was a one-woman show, it made my blood pressure soar, my penis erect, and my eyes follow the sound upwards. My mother-in-law's vagina was already soaking wet. She reached around her buttocks with one hand, digging into her vulva, while the other hand held a vibrator, constantly stimulating her clitoris. My mother-in-law's moans and groans, combined with the buzzing of the vibrator and the wet sounds of her fingers digging into my vagina, created a symphony of erotic pleasure. The sight and sound, the connection between my mother-in-law and me as family, stirred a storm within me, making me unable to hold back. I pulled out my penis and, following my mother-in-law's rhythm, vigorously stroked my raging cock. "Ee...ee...um...um...um...oh...ah..." As my mother-in-law's lewd moans abruptly stopped, I ejaculated, leaving patches of semen on the walls and grass. My mother-in-law and I, separated by a wall and window, were both panting heavily. The scene was so stimulating that I almost fainted. "Hey, brother-in-law, why are you standing there? Why don't you come inside?" Oh no, just as I was about to pass out from pleasure, my sister-in-law called me, instantly plunging me from heaven to hell. I thought to myself, "Why didn't I go in? Because I forgot my keys! I called your phone but you didn't answer, so I came back to get something. I just happened to see your mom, my mother-in-law, masturbating. I'm such a dutiful daughter, how could I disturb her? Damn it! And didn't you see I was peeping at your mom masturbating?" Thinking about this, wait a minute, the front door usually opens silently, so…did my sister-in-law see me peeping inside? What should I do? Most importantly—my penis isn't back in my pants yet. I must look incredibly lewd and embarrassed! "Oh…I came back to get the paperwork I was working on yesterday, and I forgot my house keys, so I thought…" Seeing my sister-in-law walking towards me, I nervously turned to face the wall, quickly putting my penis away. It was just too stimulating. Plus, my sister-in-law was only wearing a nearly transparent top, almost revealing her sexy underwear, and her shorts were so short they almost reached her thighs. The continued stimulation kept my pants bulging, showing no signs of abating. "Huh? Brother-in-law, you also know there's a key to the house hidden here? I didn't know either! Did Mom tell you?" My sister-in-law walked over to me, smiled, and squatted down, reaching under the potted plant by the wall under the windowsill. Sure enough, she pulled out a key. "Huh? Brother-in-law, what's this? Oh dear, you have some on your pants too! It's so smelly and sticky..." Oh no, I just ejaculated all over the wall and floor, and I didn't expect my pants to get some too. My sister-in-law saw it and even helped me wipe the semen off my pants. It was on my knees. As she wiped, she looked up at me and talked, looking like she had just finished giving me oral sex and was cleaning up the scene. Damn! This made my penis throb again, jumping up and down in my pants. My sister-in-law isn't a child. When she looked up and saw this, after all, it was her brother-in-law. The girl, who was experiencing her first stirrings of love, blushed all the way to her neck. She stood up, too shy to say a word. At that moment, I glanced out the window. My mother-in-law was no longer in the room; she'd probably gone to shower. My sister-in-law followed me, looking as if she understood something. She blushed, glared at me, and then lightly tugged at my shoulder. "Brother-in-law, what's wrong with you? How annoying!" she whispered. I figured she'd seen quite a bit since she came in, maybe even the whole thing. "Um... Xiaojuan, wait, Xiaohan (my wife), she... you..." I stammered, trying to keep her from telling anyone. "Hmm... I know! You guys are all like that, you just like to peek at things!" she said knowingly. "Just now, my mom was... you know?" she asked again. "You know... what do you mean?" I knew this college student was very inquisitive; I wanted to gently guide her. Haha! "Stop pretending! I'm going to tell my mom right now. Brother-in-law, are you going to tell her or not?" she tugged at my shirt sleeve, half-whining. "Oh dear...you're just a kid, you wouldn't understand, don't ask!" I deliberately made an excuse. Then, my sister-in-law immediately pretended to leave to tell on me, "Okay, okay, I'm scared of you, but you can't tell anyone! It's a secret." After I finished speaking, my sister-in-law nodded: "I know! Just now my mom was...was...masturbating, right?" Unexpectedly, my sister-in-law came close to me and whispered these words to me. "Hmm...yes! How did you know?" I replied irritably. "Hehe! Brother-in-law, I've been in here for a long time, and as soon as I came in I saw you by the window...that...that...oh dear! That!" My sister-in-law explained herself, and sure enough, she had seen it all. "What about me? What's wrong with you seeing me?" I wanted to tease her. "Hehe, it's...it's masturbating! I saw it! This is your...your...semen...ouch...you're so annoying!" My sister-in-law moved closer and closer to me, her voice getting softer and softer, showing me the semen that was still wet on her hand after I wiped it off my pants. "Mmm...yes! Yes!" I felt like a child who had done something wrong. "It's really sticky! But it's not as fishy as I thought! Okay, brother-in-law, I won't tell anyone...but you owe me one!" She smelled the semen on her hand, wiped it off with a tissue, and then put the tissue in her bag. "What do I owe you? What do you want? Don't be so unreasonable! You know your sister is very tight-lipped about money!" I wanted to know the price of her blackmail. "Hehe, don't worry, I won't go too far. I just want you to treat me to a movie and a five-star restaurant buffet. Also, please tell me what happened just now, that'll be fine!" My sister-in-law rattled off a string of conditions. They weren't demanding, and I should be able to manage them. The only difficult part was explaining what happened, because the main character was my mother-in-law, her mother! It was a bit tricky to strike the right balance. "Brother-in-law, you can't go back on your word! I have proof now, don't forget!" she warned me again, then pulled me towards the door. Unexpectedly, my mother-in-law came in through the back door. "Mom!" my sister-in-law and I greeted her together. "What are you two doing here? Come inside! Ah Sheng, why are you off work so early today? Hey, what's this stuff? It's all over my flowerpots, so sticky, and it smells so weird! And the floor too, this..." My mother-in-law rattled off a string of words, then noticed the mess I'd just made. She bent down and looked at the semen all over the floor, then her face flushed red and then turned pale as she looked out the window, then at me, and glared at her daughter. My sister-in-law and I both turned ashen-faced. Damn it, we'd been caught red-handed, with witnesses and evidence. I was so scared I went limp, waiting for the harsh accusations. It's all over, everything's ruined. Lust is a double-edged sword. "Ah Sheng, you didn't bring your keys again? Didn't I tell you there was something hidden here? Are you feeling unwell? Why didn't you see a doctor first?" My mother-in-law finally asked, her face as red as a turkey's. Hmm... so my mother-in-law had guessed what was going on, but she was covering for me, clearly not wanting to expose me, or perhaps to save face! "Brother-in-law forgot something at home! He came back to get it, but he can't find the key! I told him!" My sister-in-law was really helpful, and I could only awkwardly laugh it off. "Hmm... Honey, go in and get your brother-in-law a cold drink. It's so hot, and he has to go back to the company soon! Go quickly. Your brother-in-law and I will find a new place to hide the key so he won't forget it again next time. Let him find a place that's easy to remember." My mother-in-law, looking at the semen all over the place, blushed and sent her daughter away, then bent down as if searching for something. Just then, my sister-in-law and I saw my mother-in-law's proud breasts peeking out from under her loose top again. She wasn't wearing a bra... My penis instantly became erect again, changing rapidly. After agreeing, my sister-in-law walked towards the front door, not forgetting to wink at me before leaving, and then lightly punched my stomach. She had also noticed my change. After my sister-in-law left, my mother-in-law...She looked up at me, her face flushing again. "You've been back for a while? Hmm, were you looking for... looking for... the keys?" My mother-in-law straightened up and asked, noticing the bulge in my pants, and blushed again. "Yes! Yes, Mom, I was looking for the keys," I answered guiltily, looking at the bulge in my pants with nothing to cover it, feeling extremely embarrassed. "You... didn't see anything, did you? Don't... don't do things that are bad for your health! Has Xiaohan ignored you? Lately..." My mother-in-law was really smart; she guessed the situation immediately. I wanted to confirm but was shy and wanted to protect my self-esteem. This shy look was really alluring! My wife wasn't ignoring me, Mother-in-law, you've forgotten, we're newlyweds! Every night is filled with passion, how wonderful! It's just that I happened to witness your lewd, exhilarating, and incredibly stimulating scene. If I didn't ejaculate, I'd be abnormal, and your daughter, my wife, wouldn't be happy either. "Mom, I didn't see anything... I..." I stammered. "Hehe, don't say that! Do you think your mother is a three-year-old? You're healthy and strong, that's why I can hold my grandson! You're all grown up now, I don't blame you, but... but... let's leave it at that for today, but don't tell your wife, and that little devil Juanjuan, she's got so many questions, just fool her, understand?" My mother-in-law's imposing manner remained unchanged. "I understand, Mom, I... I won't..." I was interrupted by my mother-in-law before I could finish: "Alright, alright, go inside! I'm going to water the flowerpots and lawn, your dad will be back later, he always takes this route." "Mom, let me get you the hose." "Hmm, okay." It turned out my mother-in-law had thought things through carefully, not forgetting to help me cover up the evidence. After saying that, she walked over to me, gave me a disapproving look, then looked at the bulge in my pants, and suddenly smiled coquettishly and covered her mouth. I went with her to get the hose, I had to clean up my own mess. As I bent down to grab the hose from the tap, my mother-in-law bent down first. With that, her entire wrist (she was wearing a short-sleeved shirt) rested on my erect penis, and I once again saw her bare breasts. Because I was bent over, her wrist and wrist were trapped against my hips; any movement would only intensify the stimulation. I was stunned, unsure whether to move forward or back. I held on for a moment, then noticed my mother-in-law slightly moving her arm, not trying to pull away, but wanting to touch me more firmly. "Um… Ah Sheng, help me put the hose on, I… I… I'm going to water the garden." My mother-in-law's voice was barely audible, trembling slightly. "Oh, I'll do it." Seeing that her hand wasn't going to leave, I took the hose from her and slowly pulled it up, preparing to catch the tap. As I pulled out, I let my mother-in-law's arm move up and down slowly, not too much, but enough for her to feel my heat and hardness. I kept staring at her breasts, noticing her nipples were erect. I guessed her vagina was already overflowing with wetness, and I had a strong urge to have her grab my big, thick penis and give me a handjob. "Mom... all set..." My voice trembled. "Oh... I'm going to water the flowers... oh... so hard... oh my god..." When my mother-in-law picked up the hose, she touched my raging penis with the back of her hand. Even through my pants, I was so excited I wanted to ejaculate immediately! Later, I went into the living room. My sister-in-law had already gone upstairs, and a refreshing juice was already on the table. I drank it down, instantly cooling down. Today was really exciting. When my wife came home tonight, I couldn't wait a moment longer. I wanted to have sex as soon as I got into the room, but my wife said she was tired and wanted to wait until bedtime. Oh well, I had to wait! (China) Finally, evening arrived. My father-in-law was probably still in his study, and my sister-in-law had gone to bed early. As usual, it was time for some sex. I impatiently stripped my wife of all her clothes—actually, she was only wearing underwear. My eyes were practically spitting fire as I moved swiftly and decisively. "Hey... wait a minute! Honey, why are you so excited today? Oh my! Your dick... how come it's suddenly so hard?" my wife said with a lewd smile. I've been burning with desire all afternoon because of your mom and your sister. How could I not be excited? I haven't had a proper release all day. How could I not take advantage of you? When my parents-in-law first heard that we were going to stay at their house temporarily, they were very happy. They love their daughter very much, and by extension, they love me too. They specially decorated our room, spending a lot of money on soundproofing such as double-glazed windows and sound-absorbing walls, so that we could enjoy our lovemaking immediately without worrying about disturbing our family. Seeing what happened this afternoon, I actually made a special arrangement today. I deliberately left the French windows of our half-closed balcony (which connects to my sister-in-law's room) half-open, so that my parents-in-law and sister-in-law could witness our intimacy. To my father-in-law, I wanted to remind him that he still needed to do his homework; to my mother-in-law, I wanted her to have a real look at my impressive penis. As for my sister-in-law… I just wanted her to know that I'm also quite "fierce," and she shouldn't underestimate me! "Oh…ss…ee…oh…mmm…mmm…husband…so hard…hard…oh…so good…" "Oh…me too…wife…you're so wet…so hot today…" "Mmm…mmm…today we're going to…last longer…husband…" "Mmm…I'll…fuck you to death…you little slut…" While we were getting really into it, I kept glancing around. My wife's moans were always very loud; if I didn't remind her, the whole house would hear them! Today I thrust harder, and with the amusing situation unfolding around me, I pounded into her, while my wife's moans and groans grew even louder. I put on a blindfold and covered her eyes, telling her we were going to do something special today. She turned back to me with a lewd grin, wearing the blindfold—"Wife, you're going to be a little more wanton today!" Finally… after a few minutes, I saw a shadow outside the door. So I had my wife face the TV, prone, so I could attack from behind. This way, the slightly ajar doorway and French windows offered a clear view of the room. We hadn't turned off the lights today; actually, we never turn them off when we make love. My sister-in-law was already quietly peeking through the French windows. She even knew to turn off the balcony light so she could watch freely, and the difference in light would allow her to see clearly into the room. And by the door? The key point is the door. Was it my father-in-law or my mother-in-law peeking? If it was my mother-in-law, then my father-in-law was out of luck; otherwise, it was my mother-in-law's disappointment. Of course, it would be best if the two elders could watch together. While I was thrusting into my wife's cunt, making her moan and groan, I kept an eye on the situation outside. I saw my sister-in-law watching, her hand slipping inside her bra to caress her breasts. Gradually, she also slipped her hand inside her panties, stroking her cunt. Suddenly, she took off all her underwear, naked, writhing and masturbating on the balcony, moaning softly and wantonly. I could hear her; I wondered if my wife could? At the door, I also saw a shadow. After observing for a few minutes, I confirmed it was my father-in-law. No doubt, because I could see through the crack in the door that his study door was open, letting in a faint light. So I thrust even harder, wanting to give my father-in-law a more immersive and vivid experience, to repay his thoughtfulness, and also hoping that my mother-in-law could indirectly benefit as well. As time passed, my father-in-law couldn't hold back any longer. I saw him slightly push open the door, and now I could almost see half of his body, but I only used the corner of my eye to observe the movements outside. I noticed that my father-in-law was only wearing underwear... no, he had taken it off down to just his underwear, and through the underwear, he was forcefully gripping his large penis, which looked very big, thick, and robust. Then, I deliberately turned my wife a little towards the balcony so that her father could see our genitals more clearly. Suddenly, I wanted to give my father-in-law a little more of a treat, and also show my magnificent penis to the girl on the other side. "Wife, how about we play a game of dad hitting daughter?" "Mmm... mmm... mmm... mmm... mmm... good husband, no... it's Dad... Dad... Dad... don't hit me... don't hit your daughter..." This was a game we often played because my wife's father was very strict with them, and he often mentioned it to me when we met. So, during sex, I would call her "Dad" and spank her buttocks. Often when we play like this, my wife gets inexplicably excited, getting so wet that the sheets are soaked like she's urinating. We call it a G-spot orgasm. So my wife and I often play like this, even after we got married and moved into her parents' house. "You're naughty, you need a spanking. Today, Daddy's going to give you a good spanking." After saying that, my big dick left her pussy, still erect and strong. I stood in front of the TV so my sister-in-law could see my big dick clearly. When I pulled it out, a stream of juice spurted from her pussy, soaking the sheets. I picked up the belt, bent it halfway, and gently spanked her buttocks while stroking her wet pussy with my other hand. I turned her body around, and now her pussy was completely exposed to her father. At this moment, I noticed that my father-in-law had already taken off his pants. His thick, big penis was truly the size of a revolutionary soldier! "Oh...oh...Dad...be gentle...daughter...""...Be good...be good...don't be too rough...oh...mmm..." "No, you'll only be good if I hit you. What is this? Tell me!" I slapped my wife's buttocks while probing her vulva, and I increased the pressure on her vulva. "Oh...Dad...that's...that's...daughter's...vulva...so...so good..." "Why is there so much water...tell me, did you do something bad? Mmm..." "Oh...ah...Dad...Dad...no...Dad made me...made me wet...so much water...so good...Dad...you're so good at it..." "Is this good enough? Ah...do you want Dad's South Country to teach you a lesson? Dad's South Country is the great South Country of the revolutionary soldiers!" "Yes...yes...yes...dad's...great South Country...slap...slap your daughter badly...make your daughter feel...feel so good...ah...Dad...faster...faster..." I looked at the door and saw that there was another person at the door, and she hit my father-in-law. It was my mother-in-law. My father-in-law couldn't take it anymore. Just as my mother-in-law was about to drag him downstairs, he grabbed her and quickly stripped her naked. Then, as if in a show of defiance, he turned her to the side, held her against the doorframe, and rubbed his large penis against her entrance a few times before thrusting it in. I wonder if my father-in-law knew I could see what they were doing? This action allowed my mother-in-law to see my naked body and her daughter's lewd posture completely. When my father-in-law thrust in from behind, my mother-in-law blocked his view, but I could see right into her eyes. I gave my mother-in-law a lewd grin. She tried to lower her head, but my father-in-law held her down, preventing her from moving. Now, I was back in action. I turned my wife over so she was lying on her back, and I spread her legs wide, opening her vagina to my mother-in-law. After a while, I thrust in again, and my wife immediately moaned again, while my mother-in-law remained silent. As I fucked her daughter, watching her lewd posture, I thrust harder and harder, making my wife scream uncontrollably. At that moment, my father-in-law heard his daughter's moans and moved my mother-in-law so she faced the corridor, allowing her to watch our actions from the side. However, he used too much force, opening the door wider, about two-thirds of the way open. I deliberately avoided looking at the corridor, but turned my head and saw my sister-in-law kneeling in front of the French windows, directly watching us and her parents having sex. It was so exciting! My wife's whole family was here, watching, doing, and enjoying the lewd pleasure of sex—how wonderful! "Oh…Dad…Dad…I'm coming…Oh…faster…so good…I'm coming…Oh…ah…" my wife cried out again. "Oh…husband…gently…gently…ah…oh…I'm coming too…oh…oh…" my mother-in-law couldn't help herself and cried out as well. My father-in-law continued thrusting into my mother-in-law silently, giving it his all—truly the spirit of a soldier. He shifted his position as he thrust, slightly closing the door, but we could clearly see their connection—my mother-in-law's buttocks and his large penis entering and exiting. My mother-in-law's scream startled my wife and me. My wife hesitated for a moment, then lifted her blindfold, revealing the scene at the doorway. Afraid she'd stop due to shock, I immediately grabbed her ankles, lifting her buttocks high, and began thrusting even more forcefully. Sure enough, my wife screamed again, removing the blindfold and throwing it on the floor, her eyes fixed on her parents' lovemaking. "Oh… Dad… Dad… your daughter is coming… oh… faster… so good… so good… coming… oh… ah…" my wife cried out, then a gush of vaginal fluid spurted from her, making my glans throb. With one final thrust, I ejaculated entirely into my wife's uterus. "Oh...husband...ah...um...ee...oh...oh...I'm coming...coming...oh...oh..." My mother-in-law screamed wildly, then knelt down, a gush of fluid gushing from her vagina, leaving a wet puddle on the floor. After my mother-in-law knelt down, my father-in-law gripped his large penis and began stroking it. Perhaps the movement was too vigorous, because the door opened even wider. He practically stared at the three of us before ejaculating onto my mother-in-law with great force. I saw his two daughters gasp in surprise. After a long pause, my father-in-law walked into his study as if nothing had happened, while my mother-in-law got up to close the door for us. "You...next time...when you're doing this, make sure the door is closed! Go to sleep early, don't play around!" My mother-in-law was naked, swaying her large breasts, her pubic hair still a mess! After saying that, she closed the door. My wife looked out the French windows and saw a puddle on the floor—her sister's vaginal fluid—and then she saw her sister still leaning against the window! My wife glared at her, and my sister-in-law left with a sly look. "Oh! Damn it, honey, why didn't you lock the door?" my wife scolded me. "What! Didn't you always check?" I deliberately blamed her. "Never mind, you have to be careful next time! But..." my wife said. "But what? Was it exciting?" I teased. "Hehe, it's not the first time I've seen it! When we were kids... well, even now we see it! They've been so affectionate since I was little, they never closed the door properly!" my wife said. "Really? How come I didn't know?" I said. "Yeah, because they always do it in the morning! You sleep in late, so you don't see it." my wife said. "Yeah, no wonder. But what else were you going to say?" I said. "I was going to say, I've never seen Dad's penis so clearly before! It feels so big! Bigger than yours, is that true?" my wife said. "Maybe!" I said. "Being penetrated by that big southern country must feel amazing! Hehe, my mom is so lucky," my wife said. "So all you can think about now is your dad's southern country?" I asked. "Haha...you just made me call you 'Dad' until I climaxed, are you jealous now?" my wife said. Hearing her say that, my penis got hard again, throbbing against my wife. I saw her vagina starting to gush with juices again, and her nipples were erect again. My wife and I looked at each other for a few minutes, as if we understood something, and smiled at each other. "My mom...she has a great figure, right? Big breasts, right?" my wife said. "Mmm...yes, and super wet!" I said. "I know, you saw it this afternoon!" my wife said. "How did you know?" I said in surprise. "Hehe... My mom told me! My sister told me too! Hehe! You pervert!" my wife laughed, then chuckled lewdly, "Okay! Since we're both so excited right now, let's do it again! I'm thinking about my dad's big dick, and you're thinking about my mom's cunt. You're not allowed to sleep until you're exhausted." I turned my wife over to the door, making her hold onto the door frame, and mimicked her parents' sex position. I started thrusting wildly into her vagina again. My wife put her hand on the doorknob, slowly... As the movements intensified, the door opened slightly... A week later, on Saturday, I kept my promise to my sister-in-law. My sister-in-law was very excited early in the morning, and her sister, my wife, wasn't surprised either. She knew something bad was going to happen after what had happened a few days ago, so she didn't give me any special advice and went shopping with her parents early in the morning. We agreed to watch a movie at 2 pm, then take her to the most famous five-star hotel in town for a buffet. If nothing unexpected happened, we'd go home! However, judging from my sister-in-law's outfit—a short pink dress and super short mini-shorts—she probably wouldn't let me off so easily! Time was up, and we got in the car to head to the movie theater in the city center. "Brother-in-law, do you like watching these kinds of horror movies?" As soon as we got in the car, my sister-in-law asked me happily, clearly in a great mood. "Ah...it's alright, actually I like action movies like *Transformers* and *Avatar*!" I started the car, shifted gears, and drove off in one smooth motion. "So why did you book this one?" my sister-in-law asked curiously. "Ah, your sister said you like this one, right? We can change it!" I said. "Okay! Don't change it, don't change it! That's not the point..." she said thoughtfully. "Otherwise? There is a point! What is the point?" I asked jokingly. "Well...well...oh dear...it's about eating seafood, isn't it? And...and..." she stammered. "What else? Aren't we going home after dinner? Where else are we going?" I asked. "Ugh! How annoying! Weren't you... weren't you going to tell me that?" she said with a slight reproach. "What 'that'? You've already seen it all, is there anything else you need to tell me? My dear second young lady!" I laughed at her. "Hehe... yes, I've seen it, I just wanted to... wanted to hear you tell me what you saw that afternoon! The one where you were so excited you wanted to... that thing!" she explained. "Oh, you brought that up again! I know! I'll tell you! Haha!" I laughed it off. We arrived at the movie theater parking lot, and my sister-in-law kept asking me all sorts of questions along the way, even playing with my dashcam, saying it could be used as a camera. As soon as photography was mentioned, she immediately asked if I had brought a camera. I said yes, and she immediately took it out and started playing with it, taking pictures here and there. Then she started checking my memory card, saying she wanted to see if there were any random photos, and that since my sister and I were playing so much, there must be a lot of unspeakable photos. The camera was a gift from me to my wife, and she's the one who uses it most of the time. I almost never touch it; it's usually kept in her bag.My wife was taking things up and down, I don't know why she didn't take them today. Every time my sister-in-law looked at a photo, she praised my wife's photography skills, how beautiful the scenery was, and when she saw photos of people, she asked if I recognized them, offering her opinions. Actually, most of them were my wife's colleagues, men and women, including former classmates, seniors, etc. I recognized some, but not most! My sister-in-law rummaged through the bag, and I reminded her that my wife doesn't like people rummaging through her things, and if she messed things up, I wouldn't be responsible, and she'd be the one to get scolded. She stuck out her tongue, winked at me, and suddenly, she found a few storage discs in a small pouch at the bottom of the bag. My sister-in-law was overjoyed, like she'd struck gold. She started examining the images, while I ignored her and focused on driving. She looked very intently, her expression becoming strange. The little devil is always asking questions, but I felt relieved that she wasn't saying anything. We arrived at the parking lot. "Brother-in-law, is this... camera yours? Hmm?" After parking the car, just as I was about to turn off the engine and get out, my sister-in-law turned around and looked up, her face serious. "I bought it for your sister! I don't use it, your sister uses it! What's wrong?" I asked. "Oh... then... do you want to see it?" she asked me seriously. "See what? Isn't it just scenery or photos with her colleagues? Or maybe dogs and cats..." I said. "Here, take a look. But... you have to complete today's itinerary! I don't care!" She took the camera. "Xiaojuan, I don't know how to operate it! You can show it to me." I said. "How about we look at it in the back? It's better that way." she said. I thought that way it wouldn't be strange if someone walked by and saw us like this. I couldn't persuade her otherwise, so we moved to the back seat. "Hmm... this is her senior... this is her colleague... this is..." I explained the identities of the people in the photos as I looked at them, and my sister-in-law leaned her whole body against me. "Well... look ahead!" My sister-in-law said mischievously, glancing at me playfully. Whoosh! What?! A series of photos of my wife dressed very provocatively appeared, one after another. The locations were everywhere: the company, scenic spots, schools, the suburbs… She was photographed everywhere. My wife was wearing various outfits: underwear, pajamas, miniskirts, and mostly semi-transparent tops. I'd never seen any of those clothes before. Her poses were incredibly lewd. In front of my sister-in-law, I suddenly felt very embarrassed and ashamed. "These… are all selfies, right? Do you think so?" I asked my sister-in-law to confirm. Perhaps wanting a better view, my sister-in-law leaned closer, her breathing rapid, her chest heaving, almost touching my chest and arm. "I don't think so! Look at this one, the distance—you can't take a good selfie like this, and this one…" my sister-in-law explained, her voice growing softer. I looked at her face, which was already bright red. Well, seeing her own sister's lewd photos, it's no wonder she blushed; I felt embarrassed myself! The more photos I looked at, the heavier my heart became, or rather, the angrier I got, because the following photos were increasingly obscene. I saw photos of my wife completely naked, wearing only a bra, and only underwear. What angered me even more was a whole set of nude photos taken at school, several of which showed my wife naked, leaning against the corridor railing, both with her back to me and facing me, with several children chatting downstairs. (This is definitely not the fairy-like little slut from our college! She's my goddess, not my wife!) What was my wife thinking? My sister-in-law kept praising my wife's figure, while I muttered to myself. My sister-in-law continued to press against me, almost straddling me. Noticing this, I suddenly felt a physical reaction; my erection throbbed in my pants. My sister-in-law's hand, holding the camera, was being nudged by my erection at her elbow. When she noticed, she gave me a sly smile, then used the inside of her bent arm to cover my throbbing member, gently rubbing it. "Is your sister so lewd that you react so strongly, brother-in-law?" My sister-in-law's tone was full of provocation. "No…it's not the photos, the photos only make me angry…oh…Xiaojuan, no…not here, okay?" I couldn't take it anymore; a desire for revenge rose within me. Whatever, I'd get my hands on my sister-in-law whenever I got the chance. "Brother-in-law, taking pictures like that? Hmm... I've done it before! Just not this crazy. But... I always take pictures with girls, because the guys usually pounce on me before we're done, and I'm exhausted before we get many pictures. So I guess it was your female colleagues who took the pictures with you!" My sister-in-law tried to explain for my wife, and I felt a little relieved. But then I started thinking, wow... that means two beautiful women were being so lewd on set? But then I noticed that my wife's vulva was a little red and swollen. Could it be that she was pounced on a few times and that's why she looked so disheveled? Or maybe the two women were... well, the more I thought about it, the more I thought about it, but my penis was getting harder and harder. "Brother-in-law, are we still going to watch the movie? Hehe, it's really dark in there!" My sister-in-law asked with a lewd smile. "Yes, of course we're going to watch it." I went to the front seat, turned off the car, locked the door, and took my sister-in-law's hand. The two of us went into the electrical engineering department like a young couple. The movie is called *The Cave*, an adventure and extreme sports film. It's basically about exploring caves, one after another, with people dying and surviving, the survivors dying again, and the dead… of course, can't come back to life, but they inexplicably appear next to the survivors. Finally, there's a World War II tank that falls into a cave dozens of meters deep, perfectly intact, and the oil is even usable—this part is probably science fiction! Anyway, the young protagonist holds his breath for over ten minutes before finally diving back to the shore to be rescued. Strangely, all the experienced veterans die in the caves—drowning, falling to their deaths—and two of them are severely injured and on the verge of death, requiring help to drown. This is so strange! A couple more minutes of squatting would have been fatal; why be so cruel and sentimental? With such severe injuries, a simple press on the chest or heart area would have killed them; why drag them into the water to drown them? Getting back to the point, as soon as the movie started, my sister-in-law pulled the armrest between us to the back, then snuggled up to me and buried her head in my chest. Our seats were at the very back, against the far right wall. There was no one sitting next to us, but a couple two seats away, also with no one sitting next to them. The two rows in front of me and the row to my right were occupied; that's roughly how the seating arrangement was! As the movie progressed, my sister-in-law seemed completely oblivious to the plot, feeding me popcorn one minute and offering me a drink the next. This movie really felt like a romantic movie. Suddenly, she covered us both with her coat—or rather, my lower body and her chest and below. I was about to ask her if she was cold when she pouted and kissed me, then reached up from under my t-shirt to my chest. I stared at her in surprise, my erection instantly becoming incredibly aroused. "Oh my! Brother-in-law, how did you react so quickly? This is so exciting!" My sister-in-law whispered in my ear, her two firm breasts brushing against my arm through her thin dress. "Xiaojuan, you have a great figure too! Better than your sister! I wish I had known..." I wanted to tease her. "Hey, brother-in-law, we...we're just lovers for a day, you can't talk about my sister like that! And you can't think like that. Hehe!" she teased me playfully. Thinking like that, I was really having wild thoughts. In this dark movie theater, at this dangerous peak, who could resist lust? I kissed my sister-in-law, and she responded passionately. Our tongues intertwined, our teeth clashing, and our hearts were pounding. Finally, I touched her breasts with one hand and reached down behind her with the other. Wow! How did she get so wet? It was truly "earth-shattering"! "Xiaojuan, why are you so wet? You're so lewd!" I teased in a low voice. "It's raining! Of course water will get in! It's no wonder I'm wet!" my sister-in-law complained. Anyone who didn't know better would think she was talking about a scene from a movie! As she spoke, she chuckled lewdly. Just as I was wondering what was going on, she pulled her legs up and then took off her pants. Luckily, the movie theater was dark, so probably no one saw. Wait, the couple sitting next to us seemed to have noticed. I looked at the woman, and she seemed to be pulling her partner to say something, and then they kissed passionately. My sister-in-law tucked her soaking wet shorts under my legs. At this point, my hand could easily slip inside and caress her vulva. She moaned softly, looking like she was enjoying herself. Then, quite easily, she pulled down my pants, glanced around, quickly grabbed my erection, stroked it a few times, and then put it in her mouth to suck and lick. My sister-in-law was writhing, enjoying my caresses, and I was receiving her sucking. I glanced at the couple next to us; they were doing something similar, teasing each other. The woman was sitting further away, so I could vaguely see her sucking. The man's penis wasn't large, and the woman had buried her entire head in his crotch several times. I wanted to give her a comparison, so I deliberately slid forward, my coat falling halfway down, so they could see my sister-in-law's buttocks. My huge penis, being sucked, could also be compared and observed by the woman. Perhaps the scene was too stimulating, because the man, looking at my sister-in-law's buttocks, ejaculated within seconds, so suddenly that he sprayed the woman's face. The woman nervously wiped her face with a tissue and lightly slapped the man a few times; he looked helpless, while I found it amusing. My sister-in-law also saw the scene, glared at me with a laugh, pulled up her coat, and started sucking and stroking again.Her movements became faster and more frantic, just like that day, leaving a trail of vaginal fluid on the chair and the floor. She paused for a moment, I think she must have reached her climax, then her masturbation intensified, making me ejaculate. I stopped holding back and ejaculated into her mouth, which she swallowed completely. We rested for a bit, and she took a skirt from her bag—a thin, short skirt that only reached above her knees—and put it on. I had already put my penis back in place. She asked me why I didn't insert it there. I was surprised, but I said it was too cramped, not good for stretching. It was tense and satisfying, but the pleasure and enjoyment were far from enough. It was better to find a better place for a more unrestrained, passionate assault—that's real sex! She asked if a park would be okay. I said I wanted a nice park, mainly because the tension prevented me from fully enjoying myself. She asked, "What about the yard at home?" I tapped her on the head, scolding her for being so clueless. She said, "Then why are you masturbating there again?" I was speechless. This is something she'll probably talk about for the rest of her life. I need to be careful with my kids from now on, making sure they don't get too close to this aunt, lest their young minds be corrupted and my authority be damaged. Haha! After the movie, I took my sister-in-law to the restaurant we had booked. On the way, I was thinking about how to interrogate my wife about the photos. When we got to the restaurant, it wasn't crowded, so we didn't have to queue for the food and could just take it directly. My sister-in-law and I weren't greedy; we took some seafood, then cooked dishes, and so on, trying everything, but we hadn't thought about dessert yet. Then I needed to relieve myself; I couldn't go too long without peeing. I told my sister-in-law and went straight to the toilet. I turned back and smiled at her, saying I'd let her go when I got back. She held up two fingers in a victory sign, grinning lewdly, I don't know what she was thinking. After I went into the toilet, I looked around; there was no one there. I easily pulled down my pants, and finally, I could pee properly. Just as I was about to pee, a figure suddenly flashed past behind me—please note, this is an erotic story, not a supernatural one, so please don't misunderstand. I turned around and saw my sister-in-law. She hurriedly grabbed my clothes and dragged me straight into the side stall. I was terrified! What was she doing? This was a restaurant! After we went in, she quickly locked the door, panting and smiling at me, while gesturing for me to be quiet. I frowned, wondering what she was up to. "Brother-in-law, are you done peeing?" she said, her voice barely audible. "Not yet! I hadn't even peed when you dragged me in," I said. "Then pee now! Hehe!" My sister-in-law said, pulling my pants down to my knees and then holding my bottom, as if to help me pee. "Ouch... I can't pee like this!" I said. "Hurry up! I've never seen a boy pee before! Be good..." she said softly, almost coquettishly! I took a slow, deep breath, suppressing my emotions, and then "splash, splash," I peed. She seemed to be holding the hose, gently moving it to help me urinate—she really loved to play. After I finished, she took my penis into her mouth, sucked on it, and spat it out, saying, "It's so salty!" I laughed at her, "I just peed, of course it's salty." Then she gestured for us to switch positions. I widened my eyes, "Oh! Didn't you just say you'd pee and I'd take over? Now it's my turn!" She grinned lewdly. "Why are you peeing? It's so narrow here..." I asked. "It's okay! You stand a little further back, I can straddle the toilet!" She said and did just that. "Brother-in-law, have you ever seen a girl pee? Have you ever seen my sister pee?" she asked, turning around. "Um...no...no...no...your sister won't let me see," I answered. "Then you have to watch carefully! I'll bend over a little and stick my butt out a bit, you should be able to see clearly, but it might spray you! You should prepare some toilet paper, just in case," she said. As she spoke, she started urinating in a strange and lewd position. At first, it was a stream of water, then it sprayed out. I held the toilet paper close to her vulva to block some of the urine, so it wouldn't actually spray me. At this moment, my huge penis became hard again. I really wanted to insert it into her urine, but reason told me to appreciate it first before acting—that's gentlemanly conduct. After my sister-in-law finished urinating, I wiped her vulva. This exciting and touching scene, I should remember for the rest of my life. My sister-in-law didn't let me go. She reached behind and grabbed my huge penis, rubbing it against her vulva. I was about to ask if it was wet enough when she pulled her buttocks back, and the entire head of my penis went into her vulva. "Oh...it's so big! Brother-in-law, so yours is this big...no wonder...my sister enjoyed it so much!" she exclaimed. "You just found out... Your sister said your father-in-law's is bigger than mine." I tried to go in further. "Mmm... Ah... Gently... Oh... Slower... Slower... Brother-in-law, slower... Oh... Mmm... I've seen it, Dad's seems really big!" she moaned as she answered. "More than your boyfriend?" I asked. "Oh! I don't have a boyfriend... Oh... Mmm... Mmm... So good..." she cried. "Then you... You... You're... a virgin?" I asked in surprise. "Mmm... In high school, I masturbated with a female classmate... and broke my... Oh... So good... Oh... Does this still count..." she said. "It counts... Heh... So good... So good... Your sister used to... have several... boyfriends... Okay... Give it back to me... Okay..." I cried out. "Mmm... Mmm... Brother-in-law... Do it well... This virgin sister-in-law... Not enough... Do it all back... Let me be... your... concubine!" she moaned lewdly. I thrust in and out of her vagina with great force, quickly and forcefully, each stroke drawing out a little fluid, and she moaned softly. Just as I was thrusting hard, someone came in, and we paused briefly, our genitals still joined. It was a mother and son; the child didn't want to urinate outside and insisted on going into the toilet stall. The mother couldn't persuade him otherwise, so she took him in and locked the door. "You've been injured for so long and you still can't walk, really! Will your classmates look down on you at school?" the mother complained. "At school, people help me in too! Mom, you don't need to come in, you go out!" the child complained back. "This is the men's restroom! You can't come in alone, that's why I helped you in. If you make Mom wait outside, how are other people supposed to use it?" the mother said again. "Why not? It won't do anything," the child complained. "Oh dear...you're just a kid, you don't understand! Next time you ask your dad to come to dinner with you, I won't come. All this trouble, just causing me trouble." Mom was angry! "There aren't many people here, it's okay! There are even more people at our university, and Lily still pees with me...it wasn't intentional." The child told his mother. "Okay, okay, I can't do anything with you, hurry up and pee." Mom urged, then they heard the sound of a belt being unbuckled. "Mom, I'll take it off myself!" the boy said. "I'll help you, don't talk anymore, hurry up and pee...oh! Xiao Zheng, you've grown up! You've developed!" Mom said. "What development? Does it mean my penis has gotten bigger? Mom, my penis is the biggest in the whole class!" the child said. "Hehe...silly child, what's the use of being big? Study hard!" Mom said. "My classmates all say big is good, you sleep at night, you touch Dad's penis and say it's so big." the child said innocently. "Who told you to look around like that...who told you to look around like that..." Mom said, giggling. From their exposed feet, it was clear they were playing around; the mother and son had a very close relationship. "Ouch! Mom, stop grabbing my little bird! Look how big it's gotten, it won't be able to pee!" the child said, and Mom still chuckled. Then, the sound of urination was heard. The boy urinated for a long time, and I didn't dare move, but my sister-in-law started wiggling her butt again, and the sounds of her vaginal muscles rubbing together, "slap slap" and "squeak squeak," rang out again. I looked at my sister-in-law; she was licking her tongue with a lewd grin. What trick was she playing now? They were right next door! "Mom, next door...it sounds like there are people! Two of them..." the child said, stopping his pee and lowering his voice. "Um...you...you pee...hurry up." Mom's voice seemed to tremble, with a nervous tremor. "Mom, what's that sound?" the boy asked while continuing to pee. "Don't worry about it, hurry...hurry...pee!" Mom said. "Mom, I'm done peeing." The child finally finished urinating. "Wait...wait...Mommy needs to pee too." Hearing the sound of clothes being taken off. "Mommy, why did you take your skirt off?" the child asked. "Come...come to Mommy's front, oh..." the mother said, sitting down on the toilet. "Mommy, why are you digging there? Does it hurt? Can't you pee?" the child asked. "Mommy, what...what are you doing? Not here, okay? Mommy...don't pinch my penis! It's so swollen! It hurts so much." the child said again. "Mmm...mmm...oh...come...come to Mommy here...Mommy...I'll make you soft..." the mother said again. "Oh, Mommy, why are you sucking on me here? Oh...it feels so good..." the child cried out. Then, we saw the feet next door. The mother turned her back to her son, and then we heard a "slap slap" sound. The child must have started making love with his mother. I could feel my sister-in-law's vaginal fluids surging, like giant waves crashing against a dam. I increased my thrusting speed; this time it was a deep and long-lasting experience. "Oh...oh...I'm coming...coming...Xiao Zheng, give...Mom...okay? Oh...ah..." "Brother-in-law...brother-in-law...you...are so good at it...so good...""So good... I... I'm going to cum... I'm going to cum... Ah..." The women in both bathrooms seemed to have reached their climax, their loud cries causing me to ejaculate instantly. The scene was beyond description. "Xiao Zheng, did you cum?" Mom asked. "Mmm... Mom... you're so horny... how could I not cum? Oh... Mom... why are you sucking my penis again?" the child cried, while Mom cleaned up her son's things. "You cummed all inside? Next time you have to tell me first! Also, you're not allowed to watch me and your dad have sex anymore, or I won't give you any allowance!" Mom said. "Mmm... okay... I'm taking Lily home. Weren't you and Dad peeking at us too?" the child said. "Hmph... that's because I care about you! I was afraid you wouldn't know how, and you'd hurt yourselves if you did it wrong!" Mom said, having already dressed her son, and then stood up to put on her underwear and skirt. "Let's go! Let's get out! You can't tell your dad about what happened today! It'll kill him," Mom said again. "Mmm... I know! But... Mom, your vagina is so tight, and so wet! It feels much better than with Lily," the son said. "Stop praising me like that. I'm your mother. Your skills are no different from your father's. I could easily take care of you two!" Mom said in a slightly raised voice. The door opened, and we almost walked out together. They were unintentional, but my sister-in-law and I were doing it on purpose, wanting to see what kind of mother and son they were. As expected, the mother looked elegant and dignified, with fair and radiant skin, wearing a blue pencil skirt suit, and looked no more than 50 years old. The son was also quite a catch, with his hand in a cast. They seemed to come from a wealthy family. The mother, perhaps because everyone was doing such sordid things, wasn't particularly frightened when she saw us. Instead, she was calm and composed, her expression as if we were the adulterers. That's true. When you're out having fun, don't worry about anything. Just adjust yourself and don't overthink it. While having dim sum at the restaurant, my sister-in-law and I kept glancing at the table of a mother and son. There was a family there, three generations, about ten people in total, a harmonious scene, nothing seemed amiss. The father looked honest and reliable, like a businessman. The boy, however, seemed particularly close to his mother. I wondered if it was because they had just done *that* that their relationship had strengthened, or if they were naturally close? On the way home, my sister-in-law and I had a lot to discuss, but ultimately it was none of our business, just something to chat about over tea. It was past ten o'clock at night when we got home. When I parked the car, my sister-in-law had already opened the front door. We went in together, but it seemed no one was home. Only my mother-in-law's room was lit by a white light. My sister-in-law smiled at me with pursed lips, but then pulled me towards that window. We'd only walked a few steps to the window when my sister-in-law and I both heard lewd laughter and sucking sounds. We exchanged glances, then bent down one after the other to peer closely. "Strange, don't my parents-in-law usually do it in the morning?" I whispered. "Hmm...maybe Mom and Dad are in a good mood today! But it's never happened before!" my sister-in-law said with a laugh, her voice trembling slightly, probably thinking of her father's large penis. "Want to go see?" I asked. "Hmm...come on." My sister-in-law said, then pulled me along, tiptoeing to the window, where we bent down and peered inside. The scene inside almost made my heart stop. It turned out that while my sister-in-law and I were having our affair, my wife had already planned a naked social sex party with her parents—my in-laws. Looking through the window, we saw my mother-in-law half-reclining on the edge of the bed, my wife kneeling and licking her vulva, while my father-in-law was licking his daughter's vulva from behind. Both my mother-in-law and wife were simultaneously emitting waves of lewd moans. This lewd and stimulating scene stunned my sister-in-law and me, and it took us a while to recover. My penis was already hard, throbbing against my sister-in-law's buttocks. My sister-in-law turned around and looked at me with a lewd smile, her hand stroking my thick, erect penis. "Brother-in-law, are you... alright? Hehe..." My sister-in-law laughed, taking off all her clothes, one hand on the wall as she looked back at me, seemingly impatient. I quickly took off my clothes as well, one hand touching my sister-in-law's breasts, the other holding her buttocks, and then touching her overflowing vulva. The lewd moans inside the window continued, while the chirping of insects outside persisted. Beneath the window, I plunged my enormous penis deep into my sister-in-law's vagina again, and a wonderful, lewd symphony rose and fell, lingering endlessly! As for the wife's photos, I'll torture her and ask her about them after tonight's enjoyment is over!

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