Interesting that all these are hetero comments, as far as I can see. My simple answer to my simple question concerns no other person, simply me. It is just the feel of my big dick that I love ... the length, the thickness and the big head. Specially I love the feel of a good semi, and try to keep it in that state for as long as I can. I'm not in a hurry to cum, either, because that spoils it all. Again, in a flaccid or semi state, the feel of rolling it between my thighs (all hands-free!) and eventually cumming that way. Then there's the viewing of it in the mirror. Call me auto-erotic, I suppose.