Lucy Moore explains a little-known BDSM activity called "electrostimulation":
The practice, igniting sexual encounters since (purportedly!) the 1740s, involves stimulation of genital and/or erogenous zones through electrical currents produced by TENS, EMS, Violet Wands, or other control pad devices that administer power through bodily nerves. While some call it simply an expensive hobby–with beginner kits starting at about $300–many swear by the adrenaline rush ignited by using electricity in the bedroom and the deep throbbing waves that coarse through one's genitals. Through pads, tubes and other attachments that connect to one's body (only below the waist!), electrical currents stimulate nerves usually only slightly aroused during intercourse. When used properly, this results in high levels of pleasure, increased ejaculation (male and female), and heightened orgasm.
The Dish 