Been there, done that is a long-established English idiom for experience that is already familiar, and it has become a handy shorthand in memes, reaction videos, and short-form edits. Creators use the line to signal that a situation is predictable, overdone, or not worth the hype, without needing a longer explanation. Because the phrase is instantly understood across ages and contexts, it travels well between TikTok clips, YouTube reactions, and group-chat jokes. Its brevity makes it easy to drop into a fast edit, which keeps it useful long after the original trend has passed.