Last summer I decided to go out into a field wearing flip-flops. Let me tell you.... NOT a good idea. I was about to come back inside when I felt a sharp pain in my foot. When I looked down I saw this nail penetrating my sandal and my foot. Well, I had to go get a tetanus shot, and nobody would carry me so I had to walk. OUCH....that was painful. Here is my advice, "don't walk through a vacant field with only flip-flops on."