You know those plastic lids that are put on your soda when you go to a fast-food restaurant? How they have those little raised buttons that say "Diet", "Orange", "Root Beer", etc.? I used to think that pushing those buttons could change the flavor of my soda.
"I want my Sprite to turn to... orange soda," I'd decide, and push the "Orange" button down.
It never seemed to work (the taste didn't change), and honestly I couldn't explain how it *would* work. But I couldn't figure out what else the buttons might be used for, and so the belief persisted for many years. I still have never seen those buttons used for their intended purpose.
A childhood belief about drinks

others believed things like this
- I used to believe that young boys belly buttons would soon change into there willys...Anon
- I thought there was a legal drinking age for soda (I had always been told that soda was not for children).— Dial Zero
- I used to belief that women had babies by pressing their belly buttons!— amy
- I thought "Orange is the New Black" was about wearing orange to funerals.Anon
- i uses to believe that boys wee'd out of their belly buttons.— boys and toilets
- I used to believe that babies came out of belly buttons — kels