I was about eight years old when this happened. My little sister and I were supposed to be sleeping in our shared room. She had the top bunk and I had the bottom but we were both on the top this time. I was reading her a story, not a scary one, just a short fable that was kind of funny. We were joking and having a good giggle when we heard our mom call from downstairs to turn the light off.
We waited a few minuets and then I started reading again. Soon we were as loud as before. Again, we heard mom yell at us to go to sleep. We held our breath to hear if she was coming up the stairs but all was quiet, so I began to whisper read. The story was good and although there was school tomorrow, we weren't tired yet.
Then we heard something fall to the floor. I stopped reading and asked my sister if she could see what it was that fell. She didn't see anything. I sat up, and glanced around the room myself but there was nothing unusual and everything appeared to be where it was supposed to. Shrugging it off, I got comfortable and ready to read again, when I heard something move on the floor.
The both of us hung our heads over one side of the bed and looked down. I remember not seeing anything and had raised my head to look at my sister when there was a rushing sound from underneath the bottom bunk. I looked back just in time to see a shoe slide across the floor from under it and slam into the half open door. It made a loud bang! We both yelped, I hit the lights and we put the covers over our heads. It took us a long time to get to sleep that night, but we kept together and quiet, with our heads covered the whole night.
Over the years we often joke about it, saying, "When mom tells you to go to sleep, you'd better do it!"
I've had lots of these kinds of experiences all through my childhood and adulthood, so there's many stories, some scary, some not so much, that I can share.