ELI5: Explain Like I'm 5

All your base are belong to us

All Your Base Are belong to Us is a phrase that was popularized in the early 2000s and comes from a game called Zero Wing. In the game, the phrase is used by a villain in an attempt to take over the world. In popular culture, the phrase is used to mock someone, usually by implying that they are taking credit for something that isn't really theirs.
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