My Sister’s Black Satin Slip by satinshirt

“Oh, fuck!…. I can’t believe this is happening,” moaned Kelly.

I couldn’t believe it was happening either, but until my sister said no or tried to stop me, I wasn’t about to stop. Kelly was writhing on the sofa, squeezing her own tits through her satin slip. I hooked two fingers under Kelly’s satin panties and pulled them to one side. I was somewhat surprised that my sister was completely shaven and admired her moist pussy slit. It wasn’t at all how I expected it to look. A friend told me he didn’t like going down on his girlfriend. He said it looked like a bomb had gone off down there. I remember thinking to myself, “What a crude de***********ion!” Having seen pictures in magazines, I understood what he meant. In comparison, my sister’s pussy was one of the nicest I had seen. Having sucked my fingers to wet them, I explored my sister’s pussy more closely.

I buried my face between her legs and pushed my tongue as deep as I could into my sister’s snatch, licking and sucking as vigorously as I could. I flicked Kelly’s clitoris with my tongue, sucking it hard, making her scream with pleasure, her whole body writhing about and shuddering as she orgasmed.

I was so aroused my cock was rock hard and twitching in my pants. I just had to relieve myself somehow. Either my sister would have to let me fuck her, or I was about to rape her. I pushed off my shoes, then stood up and quickly removed my jeans and pants whilst Kelly just lay back on the sofa and watched with a shocked look on her face. I stood there momentarily in just my shirt, with my eight-inch erection, waiting for some glimmer of response from my sister. Kelly stared at my cock with a slightly worried look, knowing what was about to happen. Unsure if she should try or even wanted to stop me. I reached down and removed those gorgeous bright red satin panties Kelly was wearing, then lifted them to my face to sniff them. After discarding the panties, I grabbed Kelly by her ankles and pulled her onto the lounge floor onto her back. Kelly hit the floor with a thud, banging her head.

“Ouch!… Careful!” cried Kelly, rubbing the back of her head.

I knelt on the floor and spread her legs open, placing them over my shoulders, pushing all my body weight down onto her. My erect cock found the opening of my sister’s sopping wet pussy without any need to guide it into position. Within seconds I was buried deep within my own sister’s pussy and thrusting my cock in and out as hard and as fast as I could, giving it the pounding of her life. My only consideration at that moment was for my own selfish pleasure. I couldn’t have cared less if I hurt my sister or not, as I pounded her pussy with all my might. I began to sweat heavily. My shirt clung to my damp body; drips fell from my forehead onto my sister’s face as I looked down on her. I pumped my cock in and out continuously, watching her breasts bounce back and forth under that rippling black satin slip. Kelly screamed with each inward stroke of my cock. Her face contorted as if in pain.

“Don’t cum inside me!… Don’t cum inside me!… Please don’t cum inside me!” she begged, over and over.

I ignored my sister’s pleas. I had no intention of withdrawing from my sister’s pussy until I had discharged my load of cum. Suddenly, my whole body shook. An intense feeling I can only describe as a-mild-electric-shock ran through my hips and thighs. I grunted and pushed my cock deep inside my sister’s cunt, as I ejaculated inside of her, filling her womb with my fertile sperm.

As I got dressed, Kelly lay on the floor in the lounge and started to cry. “Oh my God!… Oh my God!… Oh my God!” she said over and over. “What the hell have we done?”

A sudden rush of guilt hit me. I felt totally ashamed of myself. I sat down on the sofa and stared at my sister, still crying on the floor. I started to tremble uncontrollably. Panic was setting in at the realisation of what I had just done. Neither of us spoke for what seemed like an eternity. After probably just a few minutes, my sister got up off the floor.

“I’m going for a bath,” she said in a soft, hardly audible tone. I sat there gathering my thoughts, trying to fathom what had just happened and why? After about thirty minutes, my sister reappeared dressed in jogging pants and a baggy sweatshirt. She had made us both coffee and handed me a mug.

“Thanks!” I said, watching her as she sat down opposite in an armchair. She sat staring at the floor, avoiding any eye contact with me. Nothing was said as I sat drinking my coffee. I kept looking at my sister, wanting to do or say something to put things right, but she remained staring at the floor the whole time, deep in thought, avoiding any eye contact.

Eddie was due back with Amy soon. I didn’t want to be around when they arrived home. I stood up and said goodbye to my sister, but she didn’t reply. Her red satin panties were still on the lounge floor exactly where I had discarded them. Imagine Eddie arriving home with Amy, walking into the lounge, seeing Kelly’s red satin panties on the floor in the middle of the room. Why?… How would she explain that?… I picked them up, watching my sister. She didn’t move or take any notice as if she were in a trance. I put the red satin panties in my pocket and left the room.

I went upstairs to the bathroom before I left to use the toilet. My sister’s lovely black satin-slip was lying on the bathroom floor next to the bath. I picked it up and looked at it, holding it up to my face and smelling it. I could smell my sister’s perfume on her lovely slip. I folded it neatly into a small bundle and took it with me.

As I exited the bathroom, I stood at the top of the stairs looking towards my sister’s bedroom. My thoughts momentarily drifted to those satin-slips Kelly had admitted to owning, and the satin blouses and dresses too. Did I dare take a quick peek through her wardrobe? As I pondered whether I would get caught, the reality of what I had just done with my sister dawned on me. The immense feelings of shame and guilt came flooding back.

I went back downstairs to the lounge. Kelly was still sitting staring at the floor, her coffee which was now cold, still in her hand, not having moved an inch.

“I’m going now,” I told my sister. She didn’t reply.

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