My sister came home drunk on a Wednesday night at around 220 240 AM. She was hammered... She called me to open door for her and I smelled the booze... She walked to her room all stumbling and gripping the walls... She's a 22 year old with big tits and a soft perky ass...anyways a few hours later (I'm a heavy insomniac). I noticed her room light was on.. I went to open the door to see if she was awake, I peaked and saw her snoring loudly with the covers off her and saw her plump booty with her legs open, with her g string wedged up her crotch.. I got a immediate boner. I closed the door thinking about what I saw.. Her perfect plump ass sticking out in the air with a sexy baby blue g string. I then went back in to walk up and get a closer view,. It was more amazing then I thought... I saw her pussy!!! Such a beautiful pink pussy. My dick started throbbing oozing with precum.. I started calling her name softly, to louder. She didn't budge.. I then shook the bed a bit, still no wake. I started to softly touching and rubbing her arms and back seeing if that would waked her, it didn't. I finally built up the courage to place my hand on her ass cheek. Man was it so soft and jiggly. I then grabbed my dick with my right hand and started to stroke while my left hand was still on her cheek. Still lookin up at her to see if she would wake up.. I started grabbing and wiggling her cheeks. Rubbed, squeezed, and I even went in to kiss her ass. My dick was almost ready to explode.. I started working my fingers to her pussy and started rubbing her pink softly and then tasted my finger. Her pussy tasted great!!! I kept rubbing and tasting for a minute or 2... Then I started to lick and kiss her ass. I then walked to the foot of the bed to try and see if I could kiss her pussy lips.. Her legs halfway off the bed, I softly started to lean on the bed with both hands to get my face closer to her crotch. I got to lick her pussy for a few licks b4 she moved... I leaned off the bed REAL QUICK. She only let out a little moan and turned on her side with one leg up bent by her chest.. I stated stroking for a sec then proceeded to play with her ass cheeks and finally. I felt my dick getting ready to bust. I then hovered over and busted THE FATTEST NUT EVER IN MY LIFE on my sisters ass. I looked up to see her still peacefully sleeping. And stroked the rest of the dribble from my Dick on her cheeks. I softly started to rub my the tip of my dick on her ass to rub the cum in.... My god did it feel good and I even got to finally see my sisters ass with my cum smeared on it. I even went back to kiss her ass a few more times.... I will never forget it...