In my family my sister, my mother and myself are only members. My sister is 20 years old, myself 18, and mom is 38. We stay together in our small house in a remote village. My father died years ago. Sister is married, no children. Her husband is working in a company in Dubai, so she used to stay with us. That's why she was always horny, and her cunt was thirsty for a big size cock. I used to masturbate and cum by looking at my sister's large tits and buttocks.
One day I brought one sex book, and read it in my room without noticing by others. When I read those interesting stories, I felt like fucking my sister somehow. I made plans to accomplish my goal.
I left that book on the table so that she will notice it easily. I left door half closed, and pretended to be in sound sleep. After some time sister came to my room for taking her clothes, which were in my room on the clothing line for drying.
My dear friends these women's under garments really makes me hard. I used to sniff their panties (soiled of-course) and jack off. Once I could notice stains of my cum on mom's bra. After wash they apply optic brighteners like blue and this clearly shows semen stains in white clothes. I think mom didn't recognize it. Sister's panties are my favourite ones. The strong aroma of ammonia from her piss will be always there, along with the smell of her cunt juice. Her panties were home made in those olden days. These are like trousers, so the crease in the middle will be always inside the cunt slit. You can imagine the amount of pussy juice it can absorb. I often suck that portion and enjoy her cunt flavour. Even by showing her panty to my prick it will jump up and stand like an iron rod. Since her panties were in colour printed clothes, she did not notice my ejaculation marks, I think.
So where was I? Yeh.. Sister came to my room. She immediately noticed the book (it's cover page had a picture of a naked woman) I slowly peeped, she was wearing only a nightgown, and there was nothing underneath. Big swinging breasts were easily visible. Instantly my cock got up. She was going through pages, and thinking that I am asleep she carried the book along with her. I got up and followed her silently. There was gap in the window of their room. I peeped through it. The scene inside was so stimulating.
Sister was sitting on the cot. Her nightgown had been lifted up to her hips, and her thighs were spread. Sister's pussy was fully opened like a flower. While reading the book her fingers were busy in rubbing her clit. I understood mom was watching all these fingering games of Sister.
Mom slowly got up and asked her "What are you reading?"
Sister said, "It is a book."
Mom said, "Let me see it."