I used to believe all Italian women were named Mia because of the phrase "Mamma Mia!"
I thought a Prime Minister was some kind of religious leader, due to the "Minister" part
I used to think the word barber was related to the word 'Berber', like Turks and North Africans being Semitic people, and Turkish guys being into male hairdressing.
I used to believe that Eskimos ate nothing but snow, ice, and anything else cold. I also thought that if they ate something warm, it would make them melt into a puddle.
I used to believe that Eskimos were literally immune to the cold, and that they had magic powers like the ability to freeze people or make it snow everywhere. I also thought the reason why they wore fur parkas and lots of layers was because they had to keep their powers secret, by pretending they were normal people who would die if they froze. When I was in 2nd grade, I got to meet an actual Eskimo and was so stunned and shocked. I was really, really, afraid to ask him about his magic powers, because he might get upset that I "blew his cover" and then use his powers to freeze me to death.
I Used To Believe Corporal Punishment Was Invented By Corporate Agents That They Used On Their Kids/Children, Pets, And Wives!
When I was a little girl, I used to believe that if you planted a banknote, a banknote tree would grow.
When I was a child, I used to believe that Catalonia was the unique part of land of the world.
I mixed up Egypt and China, thinking they were the same place at different times. I also threw in “Europe” as well, all as one country. Blame Sawgwa and Schoolhouse Rock.
I used to believe that the country then called Upper Volta (now Burkina Faso) was a hydroelectric power station.