I watched a video recently where some guys attached some HV to a PM, it exploded violently. I'll try and locate the link. I'm pretty sure T-1000 knows about this.
I was conditioning some HV capacitors earlier this year by constant charging and discharging across an open spark gap to ground. I had a large piece of Cast Iron tube sat vertically in the vicinity. At every discharge an NE 2 would flash and then decrease in brightness with one end touching the tube with the other leg grounded.
Not sure whether this was due to the HV source....... Might be interesting to try discharging a lower voltage high capacity cap, to see what happens?
Nanny state ? Left at the gate !!