How about fencing or ski-jumping? That's be an accident waiting to happen.
I'll say something much worse to divert the neg rep my way. I got really high once and started talking about how cool it would be to pay homeless people to come to an island, and when they got there to force them re-enact famous historical battles with authentic weapons. Winners get to go home.
Now don't get me wrong, I wouldn't actually do it and I don't think it would be cool, but you should seen the looks I got.
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