My older sister (by nine years, she should've known better!) told me when I was 4 that if you weed and pooped at the same time you would die. I would be on the toilet bawling my eyes out everytime it happened.
A childhood belief about weeing and pooing

others believed things like this
- I'm black, so as a child I used to assume that white people pooped peach the way I pooped brown.— Rick
- My older brother told me that everytime you sneezed your lungs would bleed. I believed this until I was 21!— Gem
- My oldest sister is 15 years my senior. I used to think that she was older than my mom.— Callie
- I believed everytime the toilet flushed a wave broke on a beach— Jenelle
- My older sister told me squirrels were poisonous, and I believed her until I was 9.— Jenni
- I used to believe that cows mooed out of their ears-because my older sister told me they did.— ella