I used to believe my parents were brother and sister, and that everybody's parents were brother and sister.
A childhood belief about marriage

others believed things like this
- First I believed that my parents were brother and sister. Then I thought that my dad was also my mums dad. — Rainbow
- I used to belive that my mum and dad lived together cause they were brother and sister— Corin
- I used to think that Cain and Able were brother and sister (with Able being the girl).— Duh
- i used to think that every family had a brother and sister and they married eachother when they got olderAnon
- When I was little my parents used to tell me and my sister that carrots were "orange candy." — Nancy
- I used to believe that my parents and sister were alligators underneith there zip on human costume...haha— Alyssa