I wasn’t aware I could get any harder, but the sight of it, and the thought of all the things I want to do to it, things that had never entered my mind in all the years I’ve been aware of sex, makes me harder than I’ve ever been in my life. I glide my finger over it first and he shudders again, a deep body tremble that causes the water to ripple and his legs to shift. Then I circle it with my finger, like I saw him do earlier, pressing the pad of it flat against it the puckered skin and moving it in gentle circular motions.