I used to believe up until the age of around 9 that when a plane took off there was a ramp at the end of the runway, and if it didn't go fast enough it'd just fall off the end of the runway and crash.
A childhood belief about aeroplanes

others believed things like this
- if you shone a torch into the sky at night, an airplane would thin you were a runway and land on you— spam
- I used to think that the line in the song "Life in the Fast Lane" was "Fights in the Bat Plane".Anon
- I used to think that when sombady when to the bathroom in the plane it would go strait out and fall on sombody— Tony Magana
- I used to think that if you didn't put on your seatbelt, you WOULD crash.— Mer
- That if you didn't have your seat belt buckled up when the car was in motion, it would crash.— Dave Smith
- I used to think that after you passed an off-ramp while driving on the freeeway, it disappeared.— Anonymous