I used to believe If I jumped off the porch with enough grocery bags on my arms they would act as a parachute and slow my fall. I spent hours on multiple occasions jumping off the front porch. Luckily it wasn't high enough to hurt myself.
A childhood belief about aeroplanes

others believed things like this
- I thought brown paper grocery bags would fit more than plastic grocery bags.Anon
- I believed that Reindeer loved popcorn, and so I would cook a bag and scatter it on the porch.— Popcornsanta
- i once thought that if you jumped high enough in the air, you'd get stuck!Anon
- As a child I used think if I jumped too high on a trampoline I'd be sucked up into outer space.— Jenn
- I used to believe that some puddles had bottoms and if you jumped in others you'd fall forever and ever.— abi
- I believed that if I swallowed my phlegm I would die. I spent hours spitting it out into the toilet.— chunky munky