When I was about ten years old I thought that the statement on our local buses "Spitting is prohibited" "Offenders will be prosecuted" meant that if you spat on the bus you would have your head chopped off. I very rarely opened my mouth when riding on a bus, for several years.
A childhood belief about buses

others believed things like this
- I used to think that being fired meant they set you on fire.
Or they just chopped off your head.Anon - when I was younger I used to believe that prosecuted meant that you would be killed!— tony
- i used to belive that when the doctor opened his mouth and went aaaaaa i thought he was trying to eat me.— matt
- Well into adulthood I thought that a local anesthetic meant one from the area near the hospital..— D'sparil
- I thought a "cold sore" on your mouth was the same thing as "coleslaw" and so avoided eating it for years.— Helen (UK)
- for years i was afraid to throw up because i thought it meant i was possessed like in the exorcist.Anon