Estim pulsing while I probe for a cumshot

My dick and balls are bound with silicone bands and attached to an estim box, while my nipple have their own estim power. I start off slow, feeling the current pulsing in my dick and pounding my balls. Then I start to work on my urethra, making sure to stroke every inch of the inside of my dick. I hold the rod in as I start to orgasm, and when I let go, the cum bursts free.