My sister pointed at a car with a bug cover, which may also be known as a bra, and leaned over to me, got all up in my face and said "Hey Kevin, if you crash in a car with one of those on it, you AUTOMATICALLY DIE!!" I believed her until I was about 12 and I figured out that my sister was a liar.
A childhood belief about cars

others believed things like this
- When my sister's father went to Seattle, my sister said "Is Attle nice?" She thought Attle was a person's name— zzo38
- My sister believed that october was the 10th month!— Sally
- First I believed that my parents were brother and sister. Then I thought that my dad was also my mums dad. — Rainbow
- My older sister told me squirrels were poisonous, and I believed her until I was 9.— Jenni
- I believed alligators lived in toilets, and one apparently got hold of my sister.Anon
- MY SISTER TOLD ME THAT CANNED SPAGHETTI WERE REALLY WORMS THAT'S WHY THEY WERE SO CHEAP...I BELIEVED— CATHY