I believed that if you added yellow to green it became blue. I also believed that if you added even more yellow it would turn back to blue. I didn't realize this wasn't true until about 6 months ago
A childhood belief about hobbies

others believed things like this
- I used to believe that if you mixed red, blue, green, and yellow paint you'd get plaid!— Judith Ann
- Eifel 65 - Blue
I'm Blue (if I was green I would die...)
[I'm blue, da ba dee, da ba di.]— Matt - The song "Reverend Blue Jeans" turned out to be "Forever in Blue Jeans." Who would have believed that?— music lover
- When I was 6 or 7, I believed that people could have yellow skin like in the simpsons— Noah
- i used to believe that red yellow and green meant "ready, set, Go!" on traffic lights..— cabagona
- I believed that the gap between the double yellow lines in the road was a special lane for motorcycles.— Joel