I thought that in order to use a pregnancy test, you simply have to hold it and a short time later it tells you whether or not you're pregnant.
A childhood belief about reproduction

others believed things like this
- Since the girls name Jackie is short for Jacqueline, I thought the boys name Jack was short for JackalAnon
- i thought that you had like a box or something inside you to hold your soul for the longest time— jill
- i thought the sky was white and the clouds were blue. Nobody actually tells you otherwise,do they?— fatcat
- The first time I masturbated, I thought I was going to get pregnant by my own hand.
Anon - I once believed that one could run around the south pole in order to travel backwards and forwards in time.— kaibutsu
- i used to think that PMS stood for "pregnancy morning sickness".— confused little girl