I was taking wet laundry out of the washing machine, and you know how the washer drum has all these holes so that water can escape during the spin cycle. Well, I caught just the corner of my right thumbnail in one of the holes, and took off just the bit that I actually use to pluck the string. It was still attached by a thread and I was able to do a repair job that lasted until it grew out. I should make a long list of innocuous tasks that seem to always take a toll on the right thumbnail. Right now it's a disaster.