When I was a young boy around 13-14 I used to live with my parents in an old house.
one fine evening I let my dog out to pee from the backdoor, and left it open.As I walked back towards my room, I heard a sound like someone knocking on the front door, which I found strange because it was like eight in the evening, anyway I opened the front door and no one was their, then I got pushed really hard out of the door frame and fell onto the ground outside the front door, I must have hurt myself because I remember being in pain and in tears, but when I got up to run back in the house, the door was closed, and locked, which by then I found VERY scary so I ran like a madman to the backdoor, where my dog was and I left the door open too, but when I got there the dog was gone and the backdoor was closed and locked, so immediatley I freaked the hell out and wailed like a newborn baby, luckily my parents heard me, and came out side and took me in.
A lot of creepy things happened at that house, we moved house only a few months after we moved in.
[Edited on 08.17.2012 4:40 AM PDT]