My parents used to watch the show "Dallas" and I watched it with them when I was bored. And due to the accents people have here, they hardly ever pronounce the "R" in anything, so I thought the character "Bobby" (or however his name is spelt) in Dallas was called Barbie.
A childhood belief about tv shows

others believed things like this
- I used to believe that a penis was called a bobby because my mum told me... I believed this until I was 15.— Patricia
- I used to think that board games were called bored games because you play them when you're bored.Anon
- I used to believe that people were born with accents.Anon
- there's such thing as "soul-security"( social security )
because of the way my stupid parents pronounce it— elizabeth - I used to believe bobby pins were named after my father.— Erin
- I used to believe the show Law and Order was a gardening show called Lawn and Order.— Adriana