When there's a Karen (or a facebook mom) who is being really annoying on a different social media platform (e.g. twitter), and should just go back to Facebook. It's used when people are really annoying. It's basically a way of saying "Go back to where you came from", but more respectfully, and less racist.
Karen: "Stop doing something, do something else."
A great human being: "Go back to Facebook!"
by ihfsdihaoifd September 21, 2021
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