What is the scariest experience you had?

Never got a personal experience from a ghost or anything scary, except when I was at a very small age this black shadow person used to scare me in the night after scaring me (probably dreams).
Anyways, one of my mother's friends at work had a ghost in their house. It used to throw things off the tables and put lights on and off, and their child said that she saw an old man with a beard. After that they got a priest to chase it away. Also, my aunt was always chased by a ghost in their home when she was little and when they wake up the ghost would sit on the chair inside their room. We visited the house a few months ago and it is abandoned.