When I was about 5 I thought if you peed and pooped at the same time it would come out as diareah. So I would cover myself when i pooed so I would pee till i pooed to make sure to not have diareah.
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
- i thought that when you wet yourself and pooped your pants you would dieAnon
- I used to think that on day light savings time you had to stay up till 2:00am to change the clocks! — Sandy
- I used to think it was true that only ugly girls poop and I thought I was an ugly girl because I poopedAnon
- When I was a kid I thought girls peed out of there vaginas...woops!— Greg
- I believed that chickens pooped eggs (male and female)— WHAT-A-Doodle-WHO??