Playing With Her Navel and Showing Off Her Stomach While Topless

I'm lying on the bed, with only my gray thong on, and reading a catalog. As I am reading, I begin to play with my bellybutton with my index finger. I put each finger inside my bellybutton, and notice that it actually starts to feel really good. I put my catalog down, and focus on how good it feels to touch my bellybutton. I put each finger in its hole--rubbing the inside, and then begin rubbing right outside my bellybutton--making circles around it. I see that I have a pe