I used to believe that people's brains differed in colours. I always wanted purple brains for some reason.
A childhood belief about general

others believed things like this
- I thought that big people are necessarily smarter because there brains would be bigger— Quatsch
- My mum used to tell me that cottage cheese was cows brains. I still ate it. — Justin
- my mum once told me if you picked your nose your brains came out!!!!— smiley : )
- if you pick your nose your brains will fall out!Anon
- My gran told me that if you drank vinegar your brains would dry up!!!— Sam
- My wife used to tell our kids that if you pick your nose your brains would fall out— grampy