When I was little, I was always puzzled about weddings. The line "til death do us part", mainly. I was under the belief that, after the wedding, the bride and groom would go separate ways and have to see each other in secret.
A childhood belief about marriage

others believed things like this
- When I was young,I thought the lyrics "Secret Agent man" were actually "Secret Asian Man".— M.M.B.
- I thought the bridal veil was so that the groom wouldn't see who he was marrying.— Aretia
- I used to think Freud was pronounced frood, and that "Froid" was a separate person with a different name!— Gracie
- I used to believe that when I see a flock of birds in the sky, they have a wedding ceremony.— Mr. Used to
- I used to believe that having children could only happen after a wedding with the person you are married to.Anon
- I used to believe that a "punch line" meant a line of people waiting to dip punch from a punch bowl.— Sheila