Wearing sandals, standing in the waiting area at the Coors Brewery in Colorado. Our kids were small and antsy waiting to start the tour, and the younger boy turned around to say something to me and caught the end of my big toenail with the tread on his brand new sneakers. Stood that puppy right straight up at a right angle to my toe. Yes, that had my undivided attention, but it didn't hurt for long and didn't cause any lingering problems.