While growing up in upstate New York, whenever my sister and I would be fighting or causing a ruckus, my mother would often say, "You kids are making me crazy! You're going to drive me to Poughkeepsie!" (Referring to a large Mental Hospital that used to be in that city.) Not knowing anything about the hospital, I used to think that Poughkeepsie was a city over-run with insane mommies that had been dropped off in the streets by their children. I still laugh when I get this image in my head.
A childhood belief about places

others believed things like this
- I used to believe that the "real" Santa Claus was at Macy's in New York City. All the rest were fakes. — Marcia
- My mother convinced all of us kids in our family that the large rhubarb in the garden was a Man-Eating Plant. — H.Miller
- When i was little i thought casualty was a big hospital in londonAnon
- when i was 4 i believed i could breathe under water, one day i decided to try it and woke up in the hospital!Anon
- Well into adulthood I thought that a local anesthetic meant one from the area near the hospital..— D'sparil
- That the city of Christchurch was a big church which everybody lived in.— Christine