My father used to use "oblivious" when he meant "obvious" because he thought it was funny, so i went through grade school thinking they meant the same thing
A childhood belief about speaking

others believed things like this
- When I was in elementary school nuns cam to our school. I thought that 'nun' meant they had no religion.Anon
- I thought that exorcise and exercise both meant the same thing— Dobby Bob
- I thought the phrase "At one's disposal" meant you should dispose of the person or thing.— Geirskogul
- I used to believe that "Our Father, who art in heaven" meant that God was also a painter on the side. — Amanda
- I thought “guerrilla tactics” meant fighting like a gorilla— beating your chest and that sort of thing.— Kai
- i used to believe that sex meant love and that having sex meant the two people would live happily ever after.— amy