This goes back to the early 50's. I remember asking my mother how the radio worked (before we had a TV). She said it worked with tubes. I puzzled with that and I imagined a room with walls of tiny hoses or tubes that the announcers spoke into. The tubes must have carried their voices to each person's radio. I had to believe it - my mother told me it was so!
A childhood belief about around the house

others believed things like this
- I thought when i was a kid, that all mailboxes had tubes that brought your mail to the person u sent it to.— Andrew
- Remember the old Tubes song "White Punks on Dope". Thought they were singing "White Folks are Dumb"
— WailerMan - I used to believe that the lungs where tubes in the neck.— Some Guy
- I used to believe that if you spoke into the speakers that they would hear it at the radio station. — natalie
- When listening to the radio in the mornings I felt sorry for singers they had to come and sing that early. — Tereza
- I used to think tiny little people were inside my mothers radio singing to me.Anon