I was surfing and a video about mythical people and creatures came up.
Some have been in stories around the world so long, one almost has to believe they exist.

Excluding second hand stories, has anyone here had a first hand experience with anything considered a myth or conspiracy theory?
Leave out family and local legends. I am looking for first-hand accounts only.

I have had visions, such as attributed to indigenous people. Some are unexplained. However, I saw a vision of hideous faces and told my mom I was convinced that the house we had only lived in for a short time had the spirit of someone who died there trapped.
Mom tried to prove I was nuts. In front of me that week she asked one of our new neighbors if anyone had ever died in the house. She said an old man did. My mom creeped out. She decided I had demon possession.

What mythical experience have you had?