When I was little, my grandpa had me convinced that telephone poles grew like that in special telephone pole forests. It took me years to realize that he was "pulling my leg" as Granma put it.
A childhood belief about plants

others believed things like this
- For years and years I thought telephone poles grew.— Maureen
- I used to believe that telephone poles grew out of the ground.— Jennifer (the blonde)
- I used to believe a mile was the distance between telephone poles.— Allegra
- I used to believe that you could pass things down the telephone.Anon
- I used to think that everyone had a little person just like them that all lived in the telephone.— Jenni
- I always wanted to use the telephone to call Jesus, Santa and Superman— Alex Burghart