German Video: https://youtu.be/HlFpO9Rq6-k E-stim is short for electrical stimulation and in the past couple of years, it has become more and more popular. That's not really surprising: There are quite a lot of nerves in your private parts - many more than in other regions of your body, that's why you're so sensitive there - and with a properly tuned stimulator, you can tingle each of these nerves into extasy.