I worked at a local church daycare when I was a young adult. They had an upstairs area with activity rooms for after schoolers. I would take my lunch break in those rooms ( so I could eat and chill in peace cause I ended up working on breaks due to no car.) One day im reading a book and relaxing and i hear children starting to play (it was nap) Its gets louder until it sounds like every child is awake and tearing the building down so i decide to go down and clock in to help the other 2 teachers out. I get down stairs start peaking in classrooms and every child in the building was asleep. The teachers were looking at me like im crazy. Alot of different things happened in that building. Water cutting on by itself, doors slamming, catching glimpses of things from the corner of your eyes. But this creeped me out the most because of how many children I heard.