There are times when you stumble across a news story and you fear for the future of the human race.
This incident - http://news.bbc.co.uk/1/hi/england/wear/6132140.stm - surely has to be a contender for the Darwin Awards.
In fact, I'll just go and submit it...
...there, all done.
Just discovered another version of the story here, which goes into a bit more detail:
In fact, I think I've just discovered the action caught on a mobile phone camera and posted on YouTube. You can't see much, but judging by the laughter over the guy's screams, his friends aren't that sympathetic: