All through my childhood, there was a commercial for a group called R.I.F (reading is fundamental) The announcer would loudly say "Reading is FUN! Damental!"
I thought they were saying "Reading is fun- The Mental!"
As in, those children with mental disabilities should read, too.
A childhood belief about reading

others believed things like this
- When I was about 5, I thought that English was the reverse reading of Turkish.— sel
- I used to wonder when reading the obituary column how people always managed to die in alphabetical order.— diane
- My cousin used to think that a group of nine singers was called a "niner".Anon
- whenever the tv announcer said "brought to you", I thought it was one word - "brotue".Anon
- When I first started learning to read I was convinced that vowels were called barnacles.— Andy Howell
- When I was a little kid i thought cattle meant a group of cats— It's a group of cows and bulls!