I thought I can use my old insertable electrode. A bipolar one. I haven't used it for ages. The bigger the surface, the less it is felt. And I always want to feel it just ... in the front, not in the back. And inside me. It works perfectly!
download: GrouchyDarkvioletSunbear.mp4
original: https://www.redgifs.com/watch/GrouchyDarkvioletSunbear