When my baby sister was first born (and I was 4), my older sister convinced me that she was an alein because she had an "out-ie" belly button
A childhood belief about belly buttons

others believed things like this
- My younger sister used to believe that in everybody's belly button there lived a family of squirrels.— Sophie
- That the belly button was the place where babies where born from.Anon
- My older sister had me convinced that noodles grew on trees, but that rice was man-made...— Trusting little brother
- i used to believe that when you pushed your belly button a baby would pop out im now 14 and know the truth — kelsey
- I used to think that babies were made when you press your mums belly button.
Then a baby would fall out— Chris Hyndman - a friend of my little sister's had 4 older brothers, so she thought that when you got older you grew a penis!Anon