When I was younger and I was in the car going through tunnels, I believed that the brake lights reflecting on the walls were aliens and the windows had to be kept shut so that the aliens couldn't get in.
A childhood belief about cars

others believed things like this
- When I was younger, I used to think shooting stars were aliens in need.— Sakanaaaaaa
- After watching a crazy TV show, I believed that aliens were real. I still have a little fear of them. — Niki005
- We used to turn our walkie talkies on high at night and believed were communicating with aliens!— Dreamy
- 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