One night recently my friend and I were walking under a large power line. We then noticed that when I touched my friend's arm a static tingling sensation was felt by both of us. The sensation was limited to me touching her; when she touched my arm the static tingle was not experienced.
I had no shoes on and was standing in grass, whereas my friend had thick rubber-soled sandals on. We tried swapping so I was wearing the sandals to see if the tables would turn but it was not so - she was still static when I touched her but not the other way around. When both of us had bare feet on the ground the effect seemed to weaken. But how could this be ? Why was my friend affected by a static tingling and not myself ?
Could it be that the static charge was preferentially building up in one of us for some reason?