Back in my younger days, I was new to the TIG field and about the smallest guy on the project of about 2000 workers. This was a nuclear project, so I can see how they could miss a little weld.
It so happened that the day they were making a big pour, someone noticed a 2" SS weld that had not been completed. Since it was down in the pour, it was surrounded by re-bar at about 1 foot centers. The foreman sent someone after me to finish the weld.
Well, I brought my gear and crawled down into the re-bar and was getting set up for the weld. It was a very hot summer afternoon and the sweat was streaming. Sweat, as it turns out is a very good electrolite. I started to adjust my stickout and when I touched that tungsten with that wet glove I had the strangest sensation in my left elbow. I turned my head to see an arc about an inch long and looking like a gouger coming out of my arm into a re-bar. I have had lots of arcs go into my body, but that is the only time I ever saw one come out. It burned a hole the size of a dime and a quarter inch deep in a split second.
That day I truly was an arc welder!
Oh yeah, I did finish the weld after getting a pair of dry gloves and some sleeves.