I used to think that the signs in elevators that read "In case of fire, do not use elevator," were a sort of disclaimer telling people that it was dangerous to use an elevator because there could always be a fire, and that it was wiser to use the stairs. I'd never heard "in case" used to mean "if this happens," so I thought they meant "just in case there's a fire." So I was always scared riding elevators and wondered why we were doing such a risky thing when there was a perfectly safe alternative (the stairs).
A childhood belief about excursions

others believed things like this
- i always thought it was Grape Balls of Fire instead of Great Balls of Fire— Courtney
- The first time i heard of someone getting fired from a job, i thought that they were actually set on fire.Anon
- I used to believe that firemen drove around in their fire trucks and started fires. I wondered why.— Albert
- i used 2 think if u lied your pants would catch on fire cus of the sayin "lier lier pants on fire!"— nell
- I used to think that being fired meant they set you on fire.
Or they just chopped off your head.Anon - I use to think elevators were alligators & cantalope was antelopes.Anon