Means Yesn't.
Normies typically use "No" in it's place.
Person A: "I'm not a normie, I like memes."
Person B: "Yesn't, you are a normie."
The normie word for "Yesn't"
"Have you seen that new movie? You know, the one with that purple guy from Fortnite?"
"No, not yet."