As an introvert, starting conversations can be painful, especially if they end up on topics you don't care about.
This body art will get the people who care about the same things as you to excitedly start those conversations for you, with 0 pain and anxiety. Without embarrassing you to people you don't want knowing about your geek secret.
When you wear this jewelry, you enter a secret club of people who love what you love. When they see your jewelry, other members won't be able to resist getting to know you. And non-members will just think “Oh that’s pretty,” and move along.