Many moons ago I was driving along at street near my home which, due to overhanging trees, was dark despite street lighting and, as I knew kids played in the area, I made sure I was driving at an appropriate speed.
To this day I still do not know what made me hit the brakes, as I don't consciously remember seeing anything, but when I stopped and got out the car I saw a male in his early 20's leaning his back against my front grill. He was dressed in black with his hood up and his back to traffic sitting in the middle of the road trying to find something that has fallen out his pocket as he had cycled along. Much to my amazement be stood up and began a torrent of abuse because I had almost hit him and he seemed totally oblivious that he has place himself in danger in any way.