I used to believe that girls couldn't do number 2
A childhood belief about weeing and pooing

others believed things like this
- when i was little i believed that your social security number was the number you were born on the earth — christine
- I thought that the difference between girls and boys was that girls have teeth.
Anon - I used to believe there was a number "eleventeen". I could never quite work out where it went, though.— Matthew
- I used to think boys went "number two" with their pee pees. Anon
- I used to believe that twenty was the largest number in the universe.— Bernardo Fernandez
- I used to think that any number with a decimal point in it was HUGE.— sm