As a child I really liked the song "Tik Tok" by Ke$ha and one of the lyrics was "Boys trying to touch my junk". I asked my cousin Isaac what "junk" meant and he told me it meant breasts. I believed this for years.
A childhood belief about songs

others believed things like this
- When I first started to develop my breasts I thought it meant I was producing milk— trisha
- I used to think a second cousin meant a cousin’s cousin.— Carlos Almonacid
- I fully believed, up until about 6 years old, that the word 'accident' was a noun that meant 'burnt toast'.— Karl Goetz
- i used to believe that sex meant love and that having sex meant the two people would live happily ever after.— amy
- My cousin's mom told my cousin that pop makes you short. He probably believed it.— Molly
- I used to believe that everytime a balloon was released , it meant that a child had recently died.— Samantha