Since the current day is today and the next one tomorrow, I used to be sure that the day before today was toyesterday.
A childhood belief about general

others believed things like this
- I thought there were no pirates alive today!— Sp' Iyulgar
- When I was 4 i always believed that the brocolli would jumpoff the plate and eat me and today im still scared— Katrina S.
- My sister told me as a child that ravioli was 'hedgehog' meat.
Still can't eat it today.......— Sal Myers - I thought that "tomorrow" was one of the days of the week— Frank