When I was younger, I always believed that everything on TV was live. So one day I wanted to show off a little how observant I was, and casually told my brother, "That kid sure is lucky to be able to drink chocolate milk every day." And he said, "No..." to which I replied, quite sheepishly and quickly, "Oh, um, yeah." Even though I didn't totally understand.
A childhood belief about adverts

others believed things like this
- Chocolate, they say, rots your teeth. I believed if you drank chocolate milk, your bones would be brown.— Dellio
- I believed that chocolate milk must have been cow diarrihea......makes since to me— Suzanne
- I used to belive chocolate milk came from brown or chocolate cows.Anon
- that black women breastfed chocolate milk instead of white milkAnon
- I believed for a long time that brown cows gave chocolate milk!— Evil Mom
- I convinced my sister that chocolate milk was made out of Keebler cookie elves, she believed me for a month— Rainbow Steel