Yesterday I had the good idea to use my conducting clothespins with e-stim but not by touching the wand to the conducting part of it as I usually did, this time I thought about touching it directly to the sticking out part of the nipple, which would then lead the electricity to the clothespins and everywhere and maximize sensation.

I think this has been the most painful I've got from it, even at the lowest level (pretty much unnoticeable under normal circumstances), even using the tip...