“I cut my teeth on wedding rings in the movies”

Lorde – Royals Lyrics on LyricsMode
EXPLANATION
That must have hurt and annoyed her dentist
This shows that she must have stress so she needs to do something to let it past by her.
EXPLANATION
She loves watching movies with romance and love and she dreams of that happening to her.
EXPLANATION
She dreams of having a real crystal ring that she would cut her teeth on if she bit it not a cheap knock off.
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Honestly the one about watching movies and stress are stupid! People test diamonds by biting them and if it cuts your teeth its real.
EXPLANATION
Cutting teeth is a reference to growing up.
in movies? Has two meanings: 1. She grew up in the movie industry. 2. She matured her personality by watching movies.
EXPLANATION
She means she was literally teething on her Mom's wedding ring at the movies. She didn't have a teether and all they could afford for entertainment was the movies.
EXPLANATION
"Cut my teeth" is a reference to learning and experience. She's saying she learned about diamonds from rings in the movies, since she's never seen a real diamond.