Me and my sister have always been very open with each other and enjoyed masturbating each other. One of the best times was during the summer when I was 16 and she was 14.
One day we both had the house to our selves as my mom was out at work and then doing errands afterwords. I remember my sis coming into my room saying she need some help. We stripped naked and started masturbating each other. My sister laid down on my bed an spread her legs. I slowly and playful traced her pussy with my finger. After teasing her for a while I ran my finger up and down her slit as she started to get wet. I parted her lips and slid a finger into her warm and wet pussy. Slowly I pumped my finger in an out, as I watched her face, she had her head tilted back with her eyes closed slowly moaning. I played with her pussy, I spread her lips and with my thumb, I rubbed her clit and in no time flat my sister came and squirted her juices. Then it was my sister's turn to get me off. She took hold of my seven-inch cock and slowly started to jerk me off. She started playin' with my balls, playfully tuggin on them and rubbing them. Soon she started to pick up the pace, and in a matter of no time I was cumming all over her tits and hand while she milked every last drop of cum out of me. Then we collapsed in each other's arms as we fell into a nice nap after our afternoon fun.