I live in an area with a lot of military bases. As kids, my friend once told me that the low roaring sounds we always heard (which I now know to be jet noise) was the sound of earthquakes.
A childhood belief about aeroplanes

others believed things like this
- I used to believe that the sound of crickets at night was the noise the stars made when they sparkled. — Jane
- I used to believe that there where dead people in the bases of bouncy castles.Anon
- I couldn't wait to turn 20 so I could go through the Roaring 20's and be a flapper like my Grandma.— Susan Bonnell
- I used to believe that earthquakes happened because the earth was farting. — Amanda
- I used to think thunder sounds were called "Boombies" and I would say
"Boombies!" if I heard lightning.— James the Great - I thought there was no midnight in military time; instead, it’d be 24:00.— Enrico