Robux is the in game currency of Roblox, and promises of free Robux have circulated for years through comments, fake generators and parody videos. The joke relies on how familiar that promise is, much like the ROBLOX oof remains instantly recognisable to players. As soundboards and short gaming edits grew, longer bait clips became useful as a setup rather than a punchline, letting creators stretch the expectation before a cutaway. It stays in use because the scam reference never really disappears, and new players keep encountering the same lure online.