When I was 6, I asked my mom where babies came from. Not thinking I was ready for the "talk", she calmy told me that a mommy and daddy go to K-Mart and put a baby on layaway. In 9 months, they go and pick it up. No explanation on why mommies get so big. (I was 6, she was under pressure!) They straightened it out for me a year later when my sister was born, but to this day, the customer service desk in the back of K-Mart freaks me out.
A childhood belief about reproduction

others believed things like this
- I used to believe that you would go into Wall*Mart and buy a baby for $5.50!— Sam
- My five-year-old cousin thinks that his parents purchased him from Wal-Mart.Anon
- When I was a boy I flushed my fish down the toilet thinking that it would go to its mommy and daddy.— Jeremy Clark
- I used to believe babies were 9 months old when they were bornAnon
- I don't know why, but I used to believe that babies were one year old when they were born o_O.Anon
- In the mid 90's, I used to believe that babies who were born in the year 2000 would live forever.Anon