When my brother was little he used to believe that all the mushrooms in the world were evil and waging some sort of a personal war against him.
One day my brother walked to a large, flat stone in the middle of our lawn. Then he noticed that the stone was actually surrounded by tiny fungi, panicked and started to cry. After some time my mom heard him and she had to carry him off the stone because he couldn't walk over the mushrooms again.
One another time he had a very high fever. He was delirious and thought that his whole blanket was covered with fungi.
My brother still doesn't want to have anything to do with mushrooms.
A childhood belief about nasty food

others believed things like this
- I used to believe that mushrooms in the grass grew if it was sunny and rained at the same time.— Ryan
- I thought when i was young that frogs used to eat mushrooms. :) — Mandy
- I used to think that mushrooms were meat.Anon
- i used to believe that if i ate mushrooms they would grow on me— gwen
- I used to believe mushrooms were a meat.— Lee Ann
- I used to believe that smurfs were real. I never ate mushrooms. I still don't eat them.Anon