I used to believe that what they called the people getting married were "the bride and broom". I only realized when I was 9 and going to be a jr bridesmaid that the proper term was the "bride and groom".
A childhood belief about marriage

others believed things like this
- I thought the bridal veil was so that the groom wouldn't see who he was marrying.— Aretia
- I used to believe that people from Holland were called "Hollish", like people from Poland are called "Polish"— Sally
- i used to believe nuns were married to jesus and priests were married to mary.— sunshine
- I believed as a child that the proper name for windscreen wipers was "lig-logs".— Ray
- I used to believe that tv people were tiny famous people that lived inside that box with a window called TV.— Miguel Horacio
- I used to believe that the term "being mugged" meant someone beat someone else with a coffee mug.— Matt Thiel