Up till around age 6, i thought the word must in the traffic signs that said "left lane must turn left" was pronounced MMM-EWWW-ST, like mew the cat makes. I always read them out loud saying it that way and no one bothered to correct me. I could read fluently by then, read the word right in other books, but not on the signs!
A childhood belief about road signs

others believed things like this
- When I was little and learnign to read, I used to believe that chaos was pronounced "Chaa-Ose."Anon
- I used to read about Lady Penelope and believe that her name was pronounced Penny-lope (lope as in antelope).Anon
- Having seen enough red octagonal STOP signs in my time, I used to look out for green circular GO signs.— Gary
- I thought the lines in the sky left behind by airplanes were "sky scrapers". Makes sense.Anon
- i thought grown ups read in a different language!Anon
- When I was young I used to think that WHSmith was all one word, and was thus pronounced "Wwwhhhhuuusmith"— Nathan