I (16) kept myself on edge last night looking at some g****** girl and some g****** guy b******* p***. When the house had been quiet for long enough I slipped into my sisters room,(12) as I have quite a few times. I was greeted with a great view this time. She had kicked her covers mostly off. There was plenty of moonlight showing me both of her small firm breasts since her Wonder Woman sleep shirt had rucked up in her sleep exposing them. Usually they were covered and I was lucky to maybe free one and feel it. The matching shorts showed a lot of her p**** covered crotch. I almost came looking at her beautiful lithe sleeping body. She wasn’t in a good position for me to use her s*** mouth to gently m*********, f*** and c** into, like I’ve done so many times before that I don’t know. I got to stroking my c*** and fondling both her breasts and I was so close when I rubbed her p**** over her clothes. Her body heat down there felt intense. Tempted to get into her pants again she let out a hum and stretched, rolling onto her side. I freaked and ducked. A couple of minutes later I stood up and her pretty face was in a perfect position. I eased the head of my throbbing c*** into her full supple lips and, minding her teeth I gently quick stroked and moved it in and out a little, caressing her one available t**. She began so suckle like a baby and I began to o*****. She swallowed some of my c** but was quickly drooling so I glazed her cheek, lips and chin. I had squirted to much c** once and couldn’t swallow it all and choked on it. I didn’t want to do that again. I had to hide under her bed till she went back to sleep. I finished and went to bed. This morning I watched her in her private bathroom through a peep hole and saw my c** all over her as she checked it out in the mirror. She got naked and jumped into the shower.