Hmm, obviously hands tied behind back, but TWYS = not tagged, I guess.

I hesitated to create new tags but those... seem to exist enough that I should probably go through the electrostimulation posts and add them. It seems applicable. You can tell it's an electrode by the rule of grounding in electronics: Circuits need a path back to ground, thus two or more wires (or something like a metal chair in the circuit). I'm probably one of the few people on this site that is nerd enough to actually care about all these rare tags? :P

It might actually also be a vibrator, so left the vibrator tag alone. I think it should be listed as dildo, too, because of the shape and how it's inserted.