In grade school, I thought a booster shot was where the doctor would place you in a booster seat, like the brown boxy plastic kind in restaurants, and then shoot you with a gun. It would hurt (just like my older sister said they did), but it would somehow be good for you, once you healed. Man, did doctor's appointments freak me out for the longest time.
A childhood belief about excursions

others believed things like this
- I used to think that my belly button was where I was once shot and that the navel was a healed up bullet hole— Tony
- i used to watch doctor who and every time i saw a darlic i wet myself literally.— Dan Barber
- I once thought people would keep growing until they were as big as buildings if they didn't go to the doctor. — Tufty
- i used to belive that when the doctor opened his mouth and went aaaaaa i thought he was trying to eat me.— matt
- I used to want to be a doctor when I grew up, because doctors never die, as they can cure themselves.— Stuart
- my uncle was a doctor, so when he told me his vw could fly, i believed.— boodles