I used to believe all liquids were water-based with things added to it to make different kinds of liquids.
A childhood belief about water

others believed things like this
- When I was little, I thought you had to put a finger under the water to make it hot. — M_2
- I used to believe that there were two kinds of "P": the regular one, and the elemeno P.
L-M-N-O-P.— Megan - I used to think that the word Great was added to Britain because they won the Second World War.— Age
- i used to believe that parents do things to make there children happier. well i was wrong. — Emma C.
- when i was a kid i believed i could make things happen just by snapping my fingers like in mary poppins!!Anon
- I used to think that when a movie was 'based on a true story' it was happening for real then and there— Tom