I believed the Frank Prudue of chicken fame and Ed Koch, former mayor of NYC, were brothers.
And my mom told me it was true. She still laughs about it.
A childhood belief about politics

others believed things like this
- I used to believe that if you buried a chicken bone in the backyard it would grow a chickenAnon
- When I caught chicken pox, I thought it was down to me eating too much chicken.— Helen
- I used to believe that all meats were chicken. I called everything chicken. :)— Girlfloyd
- I thought that eating chicken gave me muscles (chicken and muscles sound the same in Mandarin).— NG
- when i was young i believed Micheal Jackson and 'the artist formerly known as prince' were twin brothers.— tim
- I used to believe when you had chicken pox, you turned into a chicken— Shirley