Frau Blucher comes from Young Frankenstein, Mel Brooks' 1974 parody of classic Frankenstein films. Cloris Leachman plays Frau Blücher, the stern housekeeper of the Frankenstein estate, and every mention of her name sets off horses neighing in terror. The joke repeats throughout the film with no on-screen explanation, turning a simple name into a reliable laugh. Decades later the clip survives online as a shorthand reaction, shared in edits and memes whenever a name or entrance needs to feel ominously funny.