The clip comes from the Nintendo 64 era of Ken Griffey Jr baseball games, named for the Seattle Mariners star whose name headlined the series on Nintendo consoles. Umpire voice samples were used sparingly in those games to mimic a television broadcast, so each call had to be short, loud and unmistakable during an at bat. As retro sports game audio began circulating on soundboards and in edit packs, this first strike call survived on its own, reused by baseball fans and creators who grew up with the cartridge.