I first saw Star Wars when I was seven. When the characters spoke about making the "jump to light speed" I instead heard them say "jungle light speed" and I assumed that light moved at a faster speed in jungles.
A childhood belief about physics

others believed things like this
- I thought if you trip and fall down you fall at the speed of light!— Dietrich Corby
- I thought that if you were speeding and hit a speed bump, it would cause your car to fly into the air.— SeñorChaCha
- When my wife was a kid, she used to think that highway speed bumps were for the blind.Anon
- I used to believe that speed bumps were dead bodies that had been paved over.— Natalie
- I always had to sleep with my feet under the covers or else speed racer would drive over them.Anon
- My older brother told me that speed bumps were really dead people covered in cement.— Trina