That's great ! I like to play with the electric stimulator too. I insert one electrode into the anus together with an anal plug. Right on the prostate. And the other one I put on the head of my penis and cum without hands several times in a row.
Used my stim device on a playmate this last week. Placed one pad directly on his asshole and the second on the underside of his cock below the head. Then when I was licking and sucking on his cock head I could feel a slight tingle from the stim device. Fucking hot feeling knowing that is was coming through his asshole and cock onto my lips and tongue...