I saw part of a film on TV the other night where a group of teenagers did one of these. I know it was TV and things do get exaggerated but it made me think.
I have never in my life done one of these and don't know of anyone that has either, but I'm curious. Don't get me wrong, I'm not planning on doing one either!!!
Just wondered if anyone out there has experience of this and what they thought.
I find it hard to believe that something like that can have such power.