NC for this one as I've told some colleagues about these before.
What were you terrified of as a kid that would make you laugh today ?
I was scared of the 'radiator man'. I would lay in bed at night and hear the tinkles and pops of the radiator as it was warming up next to me. I would imagine that it was the radiator man crawling through the pipes to come and get me in my sleep. He was entirely made up of cylindrical tubes of metal, his fingers were long pipes and his body was really slim but long and shiny.
I would literally scream for my DM to come to my room and make sure my radiator was turned off before I went to bed because I was absolutely terrified that he could get to me.
It wasn't until I was in year 7 at school that I told my brother about it and he laughed and laughed at me and said he had never heard of the radiator man. Up until that point I completely believed he was real. I had clearly made it all up in my own head and couldn't believe that no one else had heard of him.
Another one was giants, I was so petrified of them I would look around my room on a night before bed for hiding places where I could go if a giant managed to get his hand through my window. My favourite place to hide was at the bottom of a fancy dress box right at the bottom underneath all of the clothes. Again, I was convinced giants existed until I was about 10! 😂
Would love to hear other people's fears as a child that were completely unfounded.