Yeah, sticking a butter knife into a wall outlet gave me the same results that you experienced. A case can be made that kids should have a “jolted” education like that - under supervision, of course.
I did lose a 3 year old nephew due to electrocution.
I’m sorry about your nephew.
I just remember that my Father taught us this stuff - and we were taught early. That isn’t going to stop a very willful child from trying something risky; but if respect for the teacher and the lessons are instilled early, a lot of later ‘bad stuff’ is avoided for most.
“School” isn’t going to teach these things.