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The guy has a pretty sweet side gig out of giving himself electric shocks.
A mate of mine who is a highly qualified electrical engineer who designs stuff that he's not allowed to talk about for a major defense contractor told me that he's very good at putting complex concepts into terms that lay people can understand and that while what he does is stupid he knows how to make it safe. My mate really enjoys watching it too.
If you are going to plug in stuff while touching live components then you deserve every electrical shock you get.