I completely believe in ghosts. My first experience was an unexplained laugh. I was 16, working at my first job. I was working at an amusement park, and was helping close up one of the shops. I left before the manager, and right behind the shop is a small, dark space. The music, which had been playing, cut off, making it around 11:00 pm, Eastern time. As I was walking towards the front of the park, I clearly heard the laugh of a child. It was loud enough that I looked around, trying to find the kid. I never did, and no kid was found.