I used to believe that toilets on the airplane would empty out its "contents" from the into the sky and i would feel so sorry for the poor guy that would get poo falling from the sky landing in their backyard. So naturally I wouldn't use airplane toilets to reduce the amount of crap falling from the sky.
A childhood belief about aeroplanes

others believed things like this
- I used to belive that an airplane was my mothers car. I don't no why. — Erilld
- I used to believe that Disney World was up in the sky because you have to take an airplane to get there.— lauren
- I used to think when an airplane ran out of fuel, it stayed stuck in the sky.— BoB
- I used to believe that when you flushed on an airplane, it would land on the people below.Anon
- My niece used to believe that I lived in the sky because she always saw me leave for school on an airplane.Anon
- I used to believe that these big, strong men would be on each side of an airplane to push it when it takes offAnon