The line comes from The 7th Guest, the 1993 CD-ROM horror puzzle game by Trilobyte that helped popularise the format. Henry Stauf, the reclusive toymaker and host of the haunted mansion, taunts players throughout with pre-recorded voice lines as they solve puzzles and uncover what happened to his guests. Clips of his performance later circulated on soundboards and in retro gaming videos, where fans kept his theatrical menace alive. It remains popular because few modern villains sound quite so politely terrifying.