When I was 14 I went through a Jane Austin phase. Around the same time I decided I was going to be a childcare worker when I finished school.
On the train one day a man asked me what I was going to do when I finished school and I told him I was going to be a wet nurse.
He was absolutely stunned for a few seconds and then said that that was a very unusual occupation these days and I looked at him as though he were mad and said 'Are you kidding? It's very common!" and then changed seats so I wouldn't have to sit next to the madman any longer.
It was a year or two later that I found out what a wet nurse does... and I will remember that poor man's expression forever.
A childhood belief about work

others believed things like this
- I used to believe that you got married right after you finished high school or college. Anon
- i thought that since my dr's name was "Dr. Washer" that meant my nurse's name was "Dryer" ... i know, its sad— mekare
- I used to think that your birthday changed every year, and that your parents just decided what day it was.— Daniel
- When I was in elementary school I use to think that teacher lived at school at their desks all year long.Anon
- I used to believe that TV finished after Blue Peter.— Jen
- I used to believe I could milk dogs like the cows. This was because I saw a nurse milk his cow.— Laurent and Alexis, French students in eighth grade