I remember thinking that companies who advertized TV's on TV were silly. If you could see the commercial, obviously you didn't need a TV!
I also could never get my head around how you could "SAVE" money by buying something.
A childhood belief about adverts

others believed things like this
- I remember thinking that non-English speakers were much smarter because they could speak "so much faster." Anon
- I remember thinking that the "Nude Furniture" store was some sort of naughty place. — Texas Rocky
- I used to think that girls' anuses were green. I remember thinking that as late as high school.— Jack
- I used to believe that when i didn't get money from the toothfairy she was in HawaiiAnon
- until 12 yo i thought buying and drinking coffee was illegal when you were under 18:) — smarty
- I used to believe that money really did grow on trees, but grownups just didn't want us to know about it.— Mariah