I had a friend when I was younger who had an imaginary friend named "Germs". He chose that name because our parents were always telling us that germs are invisible.
A childhood belief about imaginary friends

others believed things like this
- When i was younger i thought germs and bacteria were the same size as me— Tasha
- I used to have an imaginary friend named Mr. Nobody. He would protect me from my imaginary enemy, Bad Elmer.— Kdees
- That germs came from Germany.— Alicia
- I used to think that germans had germs on them and that's why they were called that— Jessica
- I was afraid of my grandma because i thought she had germs because she was german!Anon
- When I was six I had an imaginary friend named Binky. When I was seven my dad ran over Binky with the car.— Shadia Granger-Malfoy