When I was little, I thought that ladies were supposed to drink wine and men were supposed to drink beer. I also knew that alcohol was bad for you, so one night I assured my mom that when I grew up, I would drink "only" one bottle of wine each day (I figured that one bottle was one serving, since one can of beer is one serving of beer). My mom was so horrified that she made me promise never to drink it at all.
Years later, she supervised my first drinking experience. I suspect she was comforted when I came to the conclusion that alcohol tastes utterly vile anyway.
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
- That you had to be a male to drink beer.— andrei gaspar
- I used to think that apple juice was beer and I'd drink it all the time and pretend to be drunk.— Dee
- I used to believe that if you swallowed wine or beer in two sips then you would get drunk— Heather
- I used to belive that it was Illeagal to drink ANY beverage while driving, not just alcohol.— Emma*
- I used to believe that men drank beer and women drank wine. Anon