When I was six I moved to the US from the UK, before getting a house, my family stayed with my grandparents. While there, my brother (9) said, "Come into the basement with me, there are aliens down there." I went with him, and naturally there are always noises in a basement. He told me that they were aliens. He then ran up the stairs and locked the door to the basement, as I was banging on the door and crying he shouted that he could hear the aliens coming to get me.
I was afraid to go onto a floor of my house by myself until I was 14 because I was afraid of being abducted by aliens.
Thanks Jon, I love you so very very much.
A childhood belief about basements

others believed things like this
- That if I stepped on a crack on a sidewalk that I would get abducted by aliensAnon
- When I was a kid I used to believe that my perent's were aliens and I was the only human in the house.— Ali
- I used to believe the T.V show "War of the Worlds" was for real, that those aliens were REALLY coming for us. — Adelaida
- I totally believed my siblings when they told me the family was aliens and had a space ship in the garage.— cully
- I don't know where I got this from but for a while I thought that aliens were really God. — Heazure
- I used to believe that teletubies where a kind of aliensAnon