Our Grade 11 physics teacher had the same jacket, 1981. He was so old that he could not see past his desk. The desks at school were tables, divided into 2 sections; we filled one side with batteries and the other side was a big step up transformer. As the girls walked we gave them a shock, the first tasers I guess. They got into more trouble for yelling then we did. Mined you, I think the old guy knew.