I used to believe there were only 6 days of the week : Monday, Tuesday, Thursday, Friday, Saturday, and Sunday. I was confused when I first heard about Wednesday
A childhood belief about general

others believed things like this
- I once refused to believe in Thursday. I'd heard there were seven days in a week, but could only name six.Anon
- I thought that "tomorrow" was one of the days of the week— Frank
- I always thought that after 1999 it would be 1990 again, but with different months and days of the week
— optional - I used to believe that the sun shone brighter on a Sunday! Sunday in all languages is named after the Sun!!!— Vasu Moses
- I thought the Til Tuesday song said "Books are scary!", rather than "Voices Carry"Anon
- i used to believe that every friday night Freddy Kruger was under my bed and he was going to kill me— c