The FBI open up meme grew out of mid-2010s prank culture on Vine and YouTube, where creators filmed themselves pounding on doors and shouting the line before bursting in. Gaming montages and stream highlights picked it up next, using the shout to fake a raid on unsuspecting players in titles like GTA roleplay and Counter-Strike. From there it became a soundboard staple, spawning countless remixes and bass-boosted edits. It endures because the joke is instant: three words turn any quiet scene into a full-blown federal raid.