I had my brother convinced that the Coke and Pepsi people hated each other so much that they put chemicals in the drink that would kill you if you mixed Coke and Pepsi in your stomach. So, you had to pick just one and stick with it.
A childhood belief about drinks

others believed things like this
- when I was little, I called coke and pepsi "Black Juice"— can I have a refil on the black juice?
- When I was younger, I thought that coke tasted like chocolate.— Ann
- I used to think you had to be an adult to drink household chemicalsAnon
- I used to think that if you mixed a diet drink with a regular drink, it would explode. Anon
- i used to believe that if you swallowed gum, when you breathed in, your stomach would stick to your back— cope
- dont swallow gum, it will stick to your stomach , your whole life.— nancy