I thought the "physically fit" lines in the song "I Like to Move It" were "fizzy coloured feet".
A childhood belief about misheard lyrics

others believed things like this
- i know someone who used to believe that fizzy mieral water came out of the ground fizzy!!Anon
- When a soldiers went AWOL in the movies, I thought they physically climbed over "A Wall".— D Rumsfeld
- I used to believe that people only grew, physically and in age, on their birthday. — Aretia
- i used to think that coloured people had the same colour skeletonAnon
- When I got my feet measured by the electronic machine, I thought that the machine will squash my feet!— Helen
- i used to belive that before films were coloured the whole world was black and white— daniel phelps