I used to believe that foods like tomatoes, onions, and lettuce were "grown up" foods and that I wouldn't like them until I became an adult.
A childhood belief about general

others believed things like this
- I used to believe that if you were Caucasian you from New Orleans because they eat cajun foods.— Serena
- I used to believe that cabbage was lettuce that had grown up.— JHR
- adding too much sugar to foods would give you "sugar worms"...
Anon - When I was a child, I thought that grown-ups were adult.— Gloria
- I used to think that if a grown up fell down, they wouldn't be able to get up by themselves. — Kim
- When I was little I thought grown ups could fly but wouldn't tell me about it or teach me until I got older.— James the Great