Electric Nipples

I have large, sensitive nipples.  Whenever I masturbate I constantly play with them squeezing, pinching, massaging.  I've had a TENS unit for a while.  I recently started trying ways to use it.  Sadly, the attachments I've tried on my penis don't work very well.  

Since I love having my nipples stimulated, I thought it was sad that I could only play with one at a time while my other hand was busy.  I thought I'd try the TENS on them. I purchased a pair of nipple clamps. They are a metal frame like structure covered in plastic.  Just applying them directly to my nipples produced a bit of an, "Ouch!"  Similar when electric gel was applied.  It occurred to me that if I spread the charge around it might work.  

I cut a pair of 2 inch x 2 inch squares from a microfiber cloth.  I wetted them applied them with the clamps.  OMG!  It is perfect!  I can set the intensity from a mild stimulation to just short of screaming painful, and I have both hands free to do other things to my cock and other parts.