I had been jerking off for a while anticipating going to my sister again and using her mouth to gently f*** and c** in while she slept. I’ve done it a lot. I now have 64 notches on my desk to keep count. This will be 65 if I do it again. Only twice did I think that I was busted because she slept like a rock, but I was always scared shitless when I was doing it. It helped me to ejaculate faster and get back to my room. Because of holloween it took a little longer for the house to settle down to sleep. When I did creep into her bedroom it was almost 2 in the morning and I had been edging my o***** for at least an hour and a half looking at p***. I knew that I would come so fast that I would barely touch her s*** lips with the head of my c*** and start squirting. And I loved looking at her nurse on me like my d*** was her mommas t**. Well it changed as soon as I saw her in the moonlight. There was a lot of it which was good and very pretty. My sister was wearing a nightgown which wasn’t to unusual. What made me catch my breath was the fact that she had no p****** on. She always wore sleep shorts and underwear. Or a nighty and underwear. Or a nightgown and underwear. I have never seen her without p****** and I’ve seen a lot of her. As usual her bed clothes were tossed around and not covering her. This time her nightgown was up past the gentle sway of her hips and she was naked. SOOOO tempting. I did her mouth watching her nurse the c** from my d***. Then at great risk of being caught,I got past the normal bit of pissy taste all girls have to actually taste her beautiful little p****. I was so scared that she would wake up. I tucked her in and went to bed. I really had to be with her soon. Around 8 I was cooking us breakfast.