By a flipping acorn!! I was visiting a friend and packing up my kids when all of a sudden I feel a bang on my head. It hurt so bad! It actually bounced off me and landed by my daughters feet lol. Seriously only that could happen to me! It was sore for a little bit and now I have a bruise ;( My friend suggested we plant the acorn and chop down the tree once it grows LOL! Care to share any weird ways you have gotten hurt?