Got a lovely one on my right thumb.

I was slicing a loaf of crusty bread (you know the sort - massive loaf, thick crust), turned away for a moment, turned back, and the bread was red. I shrugged, put that piece to one side, and carried on cutting. After putting aside the third piece of bread, I felt some sort of liquid running down my right thumb, looked at it, and I had a chunk missing.

Took a few weeks to heal, and now I've got a beautiful scar.