Stainless steel rods make me cum hard.

I've got a couple of stainless steel sounding rods, one just a little bigger than the other. I take turns between them, stretching my urethra, then slipping the thinner one in and stroking hard. I start humping the rod as it goes in and out. I can feel the balls on the larger one through my skin bumping past my fingers. You can see the sound as it bulges inside my dick. Before long, the rod starts to make my groin spasm and twitch and my dick swells and cums. It's a deep orgasm.