When I was little I thought that to dial a number with letters in it, you had to yell the word into the phone. For the longest time, I thought you would dial 1800, and yell DISNEY into the phone. I never realized that there were letters on the number keys. DUH! I do know that now though.
A childhood belief about telephones

others believed things like this
- I always thought that my relatives were really tiny, and inside my phone when I talked to them on the phone.Anon
- From the first six letters of this word, I thought that “megalomania” had something to do with megalodons.— Enrico
- i could swear eleventeen was a number for the longest time -- it still sounds pretty convincing.— erin
- when i was little i believed that your social security number was the number you were born on the earth — christine
- I thought everyone only had a set number of breaths before they died.
I breathed slowly for a long time.Anon - Yep I thought the Zephyr song was fly away on my cell phone— Jenny