He won

I left the house and locked the door behind me. As I walked along the path I spotted a large fly. This one was at least 3 inches long with a red tail of around 1.5 inches. It came to rest on the house wall. I stopped and removed my camera from my pocket. With the zoom at maximum I took the photograph. The fly left the wall and landed on the path in front of me. I paused, it paused, there was another standoff. "You, win" I thought, as I turned and walked to the front of the house to leave via the main gate.