My older brother's name is Michael, but because I could not pronounce him name when I was little, I called him My My, and corrected many people including my parents when they called him by his proper name.
A childhood belief about names

others believed things like this
- I used to believe that people from Holland were called "Hollish", like people from Poland are called "Polish"— Sally
- I believed that the breed of dog called Boxer was called that because they could stand up and box.Anon
- When me and my brother were kids we used to think that Jim'll Fix it's Jimmy Saville was called Jim'llAnon
- My brother was terrorised by an imaginary charecter called anorak doo-dah— Corin
- Me & my brother used to think that the science programme QED was called "KWED" rather then "KYOO EE DEE".— Richard Davies
- I used to believe that all parents were called "Inge and Dirk", just like mine— eva