What does grade mean in Internet terms?

The Internet term "what level" means to look down on others and ridicule others for their ignorance or incompetence. This meme originally came from a joke: You are waiting for the plane at the airport, and suddenly a person walks up to you and asks you: "What level are you?" At this time, you may be confused and don't know what the other person means. In fact, what this person means is to laugh at you, thinking that you are not good enough and should not be here waiting for the plane. This meme was later carried forward by netizens and became an Internet slang.