In reply to psaunders:
Putain, Merde, Oh la Vache!
About 30 years ago, I was bouldering on Salisbury Crags in Edinburgh, just by the old quarry, working on a hand traverse problem.
A couple of stones came past me and I thought "Oh, must be some little b****rds kicking stones over from above".
So after shouting some abuse to the kids, I went around the corner to work on something else.
About three minutes later there was a sound like thunder and when I went to investigate, there was about 50 tons of rock where I had been minutes before.
Couldn't understand it; I had given the rock a good bash with the palm of my hand, and there wasn't any hollow sound that I could hear.....