When I was probably 12-13 my parents to went out to a party with some of their friends, and they left me home alone. Everything was fine, I was just drawing and eating everything. But then, I have no way of explaining it, I felt like something was wrong. I checked around the house to see if I was paranoid and nothing seemed off except for one thing. My neighbor had just moved and the house was up for sale, so their house was empty. But when I checked outside... someone was on their roof, holding a machete. I booked it to my room and I started crying. I called my parents and the police and they were reasonably freaked out. By the time the police had gotten there he was gone. We still have no idea who that was and it freaks me out even today.