You know that saying long time no see. Well, I used to believe that it meant that some one has seen that other person so long ago, that the sea dried out - as in no sea.
A childhood belief about speaking

others believed things like this
- I used to believe that every person in the world had a twin, and that I had a long-lost twin in France.— Ashley
- I used to think a female daddy-long-legs was called a "mummy-long-legs".Anon
- I thought the mole on my arm was from a bug pooping on my arm a long time agoAnon
- I used to think that if I stared at the sun for a long time, I could make day turn to night.— Big J
- i used to believe that if you watched TV for a long time, your eyes would turn into squares.Anon
- I thought Viagra was an allergy medicine for a really long time.Anon