In the late 70s, there was an AA (Alcoholics Annonymous) commercial that featured a man in various social settings, constantly reaching for a drink. It was accompanied by his voice-over saying "What a great time for a drink". The commerical ended with something to the affect of "Do you have a drinking problem? If so, please get help immediately."
Unfortunately for me, I used to get thirsty very easily as a kid, so I was constantly drinking water, milk, juice, etc. I never knew I had a drinking problem until I saw that commercial, and was so ashamed every time it came on!
A childhood belief about drinks

others believed things like this
- I always thought there was a drinking age for coffee, because it was an adult drink like beer and wine.Anon
- once i was drinking aot of orange juice and my sister said i would get drunk if i had too much— deanna
- as a young child i thought poo was brown from eating chocolate and pee was yellow from drinking apple juice!Anon
- I used to believe that milk was what cows peed. Never stopped me from drinking it though!
— Reuben - I remember drinking red kool aid and peeing at the same time. I was expecting it to be red.Anon
- I used to think that apple juice was beer and I'd drink it all the time and pretend to be drunk.— Dee