I've got the electronics repair version of the second-hand embarrassment some people get watching sitcoms.
The repair guy on YouTube just went, in voice over, "now watch very carefully: I'm about to learn something that'll stay with me forever" and they're probing around a power supply, bare hands visible, right next to the AC section, and the whole thing is live and powered.
I had to pause and type this up because I do not want to see this fool zap themselves