When I read the phrase "under fire," I thought that "under fire" means there's something burning below us like the White House, ground, etc.
A childhood belief about reading

others believed things like this
- i always thought it was Grape Balls of Fire instead of Great Balls of Fire— Courtney
- i used 2 think if u lied your pants would catch on fire cus of the sayin "lier lier pants on fire!"— nell
- The first time i heard of someone getting fired from a job, i thought that they were actually set on fire.Anon
- I thought that I could get a suntan if I stood really close to a fire for long enough.— Mat
- When I was little I used to believe that if I played with fire, then I would wet the bed. — Danielle
- when you sit by a fire it can dry up you bone marrow— debbie