My sister and I both have Lynn as a middle name, so one day my brother asked if that meant his middle name was Lynn too.
A childhood belief about names

others believed things like this
- I used to believe my middle name was and. At age 12, I discovered that it was actually "ann".Anon
- I used to believe that my middle name was Goofy, even though it's actually Margaret.— Lisa
- I used to believe that everyone had the same middle name as me... Elizabeth.
(even my uncles)— K.O. - I used to believe that the red thing in the middle of a Greek olive was the pit.— Liz
- I used to believe my middle name was spelled "Worn" it is "Warren"— Bart
- I used to think the reflectors in the middle of roads were pieces of cheese!Anon