I remember my mom explaining languages to me while in a mall after hearing someone speak spanish. For some reason after that I always associated the Japanese with suits from the mall and thought you could tell someone was Japanese if they were wearing a suit.
A childhood belief about nationalities

others believed things like this
- i used to believe that i am american.
i am japanese . — mayumi - My older brother made me believe that wristwatches were powered by tiny Japanese men inside them.— Outsider
- I used to believe that The Mall Of America was in Canada. — Adam
- I used to believe that mall directories were magic because they always knew where you were.— eric
- I used to think that a strip mall was where you shop naked.— WD
- I used to think everyone in the world knew and thought in English, but choose to speak different languages. Anon