What's the weirdest or creepiest thing that's ever happened to you?

I don't think I have many creepy stories, although there was a time when I lived in a cul-de-sac, we were playing outside as kids (probably about 7-8) and this man just came from nowhere and sat on a wall near us, watched us for a while and left. It was in broad daylight too, but he didn't beckon us over or anything. Just sat and watched.