Just another way of saying no.

When you and/or your friend type something in a group chat that is related to something only you two know so you send the you know that i know that you know that i know and confuses everyone else

A person who knows nothing about most topics they chime in on in conversation. This person will be 16 years old with zero experience about farming and tell a farmer about crop rotation. This person will tell a European car technician what's wrong with their car, refuse to pay diagnosis, because they used to work at Chevy in the 80s, and then bitches when the car isn't fixed.

Rather than listening and increasing their knowledge they insist to run their mouth to the point where everybody is annoyed.

1. A Concise phrase, where the context of the matter doesn't need to be explained. Usually said to someone out of the loop/ not up to date/ is not aware.

2. Having knowledge or being aware of something especially through personal experience.

3. Street Smarts

4. Being Cognizant

When you say this line with another person, it's 100% certain that you both are inlove with each other.

a super fucking obvious yoonmin moment in serendipity

The defining phrase of an inside joke/access to information only a select few know about