after watching E.T., I asked my mother what "extra terrestrial" meant. She told me it was used to describe aliens who had an extra set of testicles. I'm pretty sure she actually believed this herself, since no parent would give such strange false information to their 7 year old child.
A childhood belief about aliens

others believed things like this
- I used to think that "extra body" shampoo meant you could use the runoff suds to clean your body.— Christy
- i used to beleive taht when you turned 14 years old you wuld grow an extra toe— kirsty
- After watching a crazy TV show, I believed that aliens were real. I still have a little fear of them. — Niki005
- when I was about 7 I thought that aliens hid under my bed. I wouldn'd sleep in my bed for a whole year!— *Rachel*
- I totally believed my siblings when they told me the family was aliens and had a space ship in the garage.— cully
- i thought aliens would come to earth year 2000 because of a commercial were an alien ate a hot dog— ulle