Wisdom Tooth

Next week I will have my tooth out.
The tooth is named "unknown-to-parents" in Japanese, and "wisdom tooth" in English.
The tooth started growing when I was studying librarianship in Illinois.
I thought the name of "unknown-to-parents" was certainly true because I wouldn't inform my parents not to worry them.
As I talked to my friends about my tooth, Elena said to me "Wisdom tooth? You are really getting wisdom just now!"
That's right. I was actually learning a lot at that time.
Then Mr.Lee taught me, "We call the tooth 'love tooth' in Korea. It is time to fall in love with someone!"
Is it true or not? ─ I do know the answer.