I used to believe that that the clams I found on the beach each had a little goldfish living inside. I think it was because my mum told me they were called "Shellfish". Fish in a shell - obviously!
A childhood belief about general

others believed things like this
- my brother told me rice crispies were really fish eggs we gave to the goldfish. I never ate rice crispies.— johnboy
- I used to believe that a fish cake was a fish in sponge and coated in icing. I believed this until I was 9.Anon
- i used to beleive the ice cream man was a fish man - becuase i hated fish.— jordan
- Burned fish fingers ment the fish was from the black sea.Anon
- i used to believe the white part in fish meat is because of the fish's milk— Kim
- i used to believe that scampi was fish toes instead of fish fingers....Anon