I used to believe that root beer was literally beer with roots. I was often served it in restaurants, and I would ask,
"Is it freshly made?" which would of course make the grown-ups laugh. It wasn't until I was 7 I figured out that it was actually a kind of soda.
A childhood belief about drinks

others believed things like this
- i used to believe that root beer was made with root juice and beer— tm
- I used to think that Root Beer was beer with less caloriesAnon
- I used to believe that rootbeer was made from the roots of a beer plant.Anon
- I was always told that beer was made from horse pee.— Just me
- That you had to be a male to drink beer.— andrei gaspar
- I used to think that beer was horse pee. Probably because that's what my mom told me...— Kara