We used to go to the church that my great-grandparents did, but I don't know which denomination it was - one Easter, the Sunday School class had to fidget through the actual sermon, as we were old enough to do the Communion ritual... when it came my turn, I took a sip of the wine and said
"Who put beer in the Welch's Grape Juice?" I was about 6.
Since this was followed by the usual embarrassed adult silence, I spent many years believing that God always put beer into grape juice as part of the Adult ceremony.
I also used to believe that God would
kill you unless you sang slow, dirging mournful hymns. But you had to sing all the verses. I used to be so scared for everybody in my church because they didn't want to sing all the verses of "The Old Rugged Cross", and most times picked joyful songs - Somehow I had gotten the impression that God hated everybody and only liked them if they were miserable.
A childhood belief about church

others believed things like this
- I thought that grape juice was called "great juice". Anon
- I always thought there was a drinking age for coffee, because it was an adult drink like beer and wine.Anon
- I used to think that church songs were pop music. Well, we did sing them in church every week...— Roxy
- i used to believe that root beer was made with root juice and beer— tm
- 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