Erotic electro stimulation (also known as electrophilia or electrosex), is a human sexual practice involving the application of low frequency electrical stimulation to the nerves of the boy putting particular emphasis on the genitals using a power source (such as a TENS , EMS, or Made-for-play units) for purposes of sexual stimulation. Electro stimulation has been associated with BDSM activities, and erotic electrostimulation is an evolution of that practice. Erotic electro stimulation is the use of Electro Stimulation in an erotic or sexual manner versus the more sadistic or painful applications in BDSM.