Sometimes a fleeting, ephemeral touch can be more arousing than an hour of intimate conversation.<br><br>Run your fingertips along the inside of your wrist, slowly trace your spine under the thin fabric of your dress, or touch a stray strand of hair just brushing your neck. Your skin instantly breaks out in goosebumps, and a powerful electric shock runs through your body. It's body language you understand without words and from which you cannot defend yourself.