NSFW REAL NSFW Does anyone have any personal experience with using electricity during sex?

I was just forwarded two clips from a porn site. One was about using electricity for “CBT” and the other one was from a site called wired pussy. Both involved electrical shocks to the genitals. The guy didn’t seem to be having much fun, the girl said it was intense but she wanted to do it again. First, isn’t it dangerous to mix electricity with anything, and second, what does it feel like. Does anybody have any thoughts?