I used to believe that when people said that they "didn't drink", that they really didn't drink...anything, ever!. No water, milk, soda, etc...
I used to see/hear this on TV shows a lot. "No thanks, I don't drink."
I was flabbergasted!
A childhood belief about drinks

others believed things like this
- I used to think that if you mixed a diet drink with a regular drink, it would explode. Anon
- I thought that soda was also called "pop" because if you drink too much of it, you'd explodeAnon
- My friend told me you have to drink milk to get boobs LOOL— Roxanne
- My mum used to tell me that you couldn't drink water out of the tap from the bathroom as it was poisonous.Anon
- When I was young I refused to drink well water because I thought it came out of whales.— itodd
- I used to think that if I ate a fruit seed it would grow in my stomach if I drink water after thatAnon