When I was little I thought that reincarnation meant that you turned into a walking and talking carnation if you weren't succesfull in life.
A childhood belief about plants

others believed things like this
- I used to believe that my cat was a reincarnation of the buddha and was sent by satan to squash me.— Nazza
- I used to believe that when people talked about 4x4 trucks, I thought it meant all the wheels turned.
— tracy - I used to think that "No standing signs" meant that you weren't allowed to actually stand in the area!Anon
- i used to think the song "walking in a winter wonderland" was "walking in a womens underwear"— stephen s
- I used to believe jaywalking meant walking around naked in public (from naked as a JAY bird...)— Izzi
- I used to believe that jay walking was walking naked on the street. — Kendra