I was wondering what would happen in the night. My questions were answered very quickly. As soon as the lights were switched off, my sis started moving her hand upon my cock. I replied by softly pressing the upper region of her thighs near her pussy. For the first time ever someone touched my dick other than me. Both my parents were asleep with their back towards us. She pulled down my boxers & I felt something soft on my dick. I was really amazed to find that my sis was sucking my dick. I was enjoying it, surely the best thing happening to me. After 20 minutes I had the most awesome ejaculation. After few minutes my sis took my hand putting it inside her panty. I've never touched a woman's pussy. It was almost a hairless cunt. I started by moving my hand slowly around, her head was on my shoulder & my other hand were caressing her boobs. She was breathing heavily & I could sense her excitement. I inserted a finger inside her pussy. I too got excited seeing the way she was enjoying herself. After a while I felt her cumming. Then we kissed each other passionately.