I remember when I was about 7, there was this weird plug thing that you put into an outlet. I had no idea what it was (and still don't) so I plugged it into the wall to see what it would do. About 5 seconds afterwards, it caught on fire and exploded in my face. My arms were covered in something and my hands were completely black, then my Mom walked into the kitchen to see what happened and I made up some dumb lie that she didn't believe and then I got in trouble for lying and touching things that don't belong to me.
I think a couple years later I asked what it was but then I forgot, oh well.