Being a sheltered little kid, I had no idea what a virgin was, until I figured it out looking at a book of Christmas carols. The illustration for 'Silent Night' had Mary sitting on the ground, leaning against a boulder holding her baby. I took 'round yon virgin mother and child' as 'round yon virgin, mother and child.' I thought virgin was another word for boulder.
A childhood belief about characters

others believed things like this
- I used to think virgin mary was actually 'virginia mary'Anon
- I thought "Virgin Mary" was actually "Verge 'n Mary" and that Verge was a nickname for Joseph. — Rachel
- I thought the Holy Ghost was the ghost of the Virgin Mary.— Texas granny
- I thought the Virgin Islands were owned by Richard Branson until I was 24. — LJ
- I always thought 'virgin' was Marys star sign and could never work out why it was such a big dealAnon
- Instead of Madonnas 'Like a virgin' I used to sing 'Like a gerbil'— Stupid Child