When I was little, I used to think the commercial advertising the Mitsubishi car was actually a Mr Fishy Car.
A childhood belief about adverts

others believed things like this
- Because of a commercial I seen on tv, I thought the whole world was the size of the of the U.S.— Paulette
- I used to believe that spaghetti grew on trees, based on a pasta commercial from the 70s.— Dianne
- i thought aliens would come to earth year 2000 because of a commercial were an alien ate a hot dog— ulle