When I was very young, I thought that "the" was pronounced "thee", and if you meant "th-uhh", you had to spell it "th".
A childhood belief about spelling

others believed things like this
- When I was young I used to think that WHSmith was all one word, and was thus pronounced "Wwwhhhhuuusmith"— Nathan
- When I was, like, three, i thought my cat was an evil sorcerer and would cast a spell on me. XD— Bobbet
- When my sister told one of my brothers her e-mail address, he thought to spell out “at” instead of typing “@”.— EJ - no longer computer illiterate!
- i thought the name Anon, was really a name...pronounced A-Non...haha i figured it out— Norman einstien
- Until very recently, I thought "archives" was pronounced like "are chives".— Mitsuki
- I thought that polystyrene was pronounced 'polly-STEE-LEE-an'.— Polly Stairiin