When I was 4 my brother told me that he was an alien, sent to earth to study humans. He told me that he would dissect me in my sleep. I retorted with the classic "I'm telling Mom and Dad!"
His response, "They're aliens, too."
I was terrified of sleeping for months.
A childhood belief about aliens

others believed things like this
- i thought aliens would come to earth year 2000 because of a commercial were an alien ate a hot dog— ulle
- I was told that if you sleep on your back you swallow your tongue...I have been sleeping on my side ever since— scotty la
- i used to believe that humans started when some robots constructed us and then threw us down to earth— roy
- I used to believe all the stars in the sky were really just aliens with flashlights shining them at Earth.— Lyssy
- 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*
- Someone told me People and fish went to the same place.I thought they meant humans get flushed— MrK