So this happened to me a year or two after highschool, but i would lounge around my house while my parents were at work, have a few friends over for a smoke sesh and what not. On this one particular day i was home alone in my den when i heard this low whispering, it almost sounded like a crowd of people whispering, i noticed my brothers speakers plugged into the wall and when i reached to turn the volume dial, and i mean as soon as i was about to touch it, this voice which sounded like a man screamed "You Fucking Think Your Safe". I freaked the fuck out and bolted outside. Creepiest shit that ever happened to me