A few years ago, I took one stone of apple size from the sea. Extremely smooth stone. One day I came up with the idea of rubbing dick on that stone. I put it in my tight briefs and I lay on my stomach. As soon as I started to make movements with my body and rub a dick and balls on the stone in a briefs, I immediately cum. Since then, I do it regularly
. Is there a name for stone/rock fetish?