Giantdog....lol your story reminded me about the time I was in Dublin with my Mom. For some reason, I seem to remember that Mom was sat on a beech and I was up some steps above where she was sat. Like Giantdog, I have no idea why I thought this would be a funny thing to do, but I decided to drop a rather large boulder on her head
She wasn't best pleased and my arse smarted for hours after.