I found her clit, and rubbed it lightly. I was really enjoying the feelings, and wanted stronger, better orgasms. It soaked my cock and the bed under us both.
I switched from one to the other. We had gotten a hotel room for the night, and my parents naturally slept in one bed, leaving the other for my sister and I. When I found her hard little clitty, she gasped out loud, and ground her hips down against me.
She looked up at me, grabbed me by the back of my head, and pulled me down into the most sensuous tongue kiss I have ever experienced. Knowing that I could probably get away with what I had done a year ago.
I dipped my head down, and inhaled. Then one night, after waking up with a boner, I went in the bathroom for relief.