The yeah comes from CSI Miami, the long-running American crime drama in which detective Horatio Caine, played by David Caruso, became famous for putting on his sunglasses and delivering a dry one-liner before the theme music hit. That opening moment was clipped, captioned and shared online until the shout alone signalled a dramatic reveal. Salsa-flavoured edits like this one keep the joke recognisable while adding dance energy, which is why creators still reach for it for entrances, twists and celebratory punchlines.