In the late 1970s, the chocolate/hazelnut candy "Toffifay" had an advertisement that claimed it was "too good for kids." I thought that meant it was *illegal* for kids to buy it, and I didn't get up the courage until I was 18 - a legal adult!
A childhood belief about sweeties

others believed things like this
- I used to think that Legal and Illegal meant the same thing (illegal)— Dhruv
- I thought that the barber sign meant candy because I thought it looked like a candy cane.Anon
- I used to think it was illegal to drink hot chocolate in the summer. — Samantha
- My mom thought "euthenasia" meant Asian kids.(youth in Asia)— Ibelievedher!
- ‘Unadulterated’ meant that something wasn’t rated 18+ and was therefore safe for kids— Evie
- I thought when someone was described as being "mild-mannered" it meant they didn't have very good manners— Samilton Duerheiser