The phrase comes from Star Wars, where credits are the galaxy's everyday currency, so the line works as a ready-made joke about getting paid. As a short, easily dropped soundboard clip, it spread through meme edits, gaming videos and reaction posts whenever a payment, trade or favour was completed on screen. Its staying power comes from that flexibility: it fits real money, in-game currency and imaginary deals equally well, and the Star Wars reference adds instant recognition without needing any explanation for viewers who already know the franchise.