Estim berdenyut semasa saya melancap untuk pancutan mani

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.