My 7 year old sister has Danny Phantom living in our basement. I believe he's also her boyfriend.
A childhood belief about basements

others believed things like this
- My sister told me that Fraggles lived in our basement. I used to sit down there forever so I could see them. — Suzie
- My sister thought (not more than one year ago, she is now 14) that John Doe was an actual person.— Brother to Natascha
- i used to think that if i didn't celebrate my birthday each year my younger sister would catch up with me— q
- My sister uesd to think that you did a whole year's worth of growing in the night before your birthday.— Richard Davies
- I thought that 1983 went on for 3 years - had to ask my sister who decided how long a year lasted.— Sally
- i used to believe that the basement had monsters in it.Anon