With five kids, my family frequented Furr's, a cheap, buffet-style chain restaurant. To keep us from overindulging, they told us that the desserts cost extra, and since there were so many of us, we couldn't have any.
I believed that until the day I went to a Furr's with my husband and asked if it was alright if I got a slice of pie. He looked at me as if I were insane, asking what he'd done to give me the impression that he was the sort to control every little thing that went into my mouth. I explained that I knew we were a little tight on cash and didn't want to seem frivolous.
Needless to say, after a fit of laughter, he told me that the desserts were included... since it was, after all, a buffet. I was convinced that he was trying to make me feel better, to the point of asking the cashier. After that, I was convinced the franchise had changed their policy (after all, I'd never questioned it in all the years since), and I just hadn't realized.
Surely, my parents wouldn't have lied to me! :)
A childhood belief about general

others believed things like this
- My mother convinced all of us kids in our family that the large rhubarb in the garden was a Man-Eating Plant. — H.Miller
- a friend was convinced that his school was an asylum, and couldn't be convinced otherwiseAnon
- When you are very poor you "can't make end's meat." End's meat is some sort of cheap very low quality meat.— Betty
- MY SISTER TOLD ME THAT CANNED SPAGHETTI WERE REALLY WORMS THAT'S WHY THEY WERE SO CHEAP...I BELIEVED— CATHY
- i used to beleive that if you chewed gum it woul give you warts in your mouth my sister told me this— sunney jim of the pearl
- I used to think eating raw potatoes would give you "BEZORES".
Our family doctor told me this— Moodycop