This clip comes from Metal Slug, the arcade run-and-gun series where mummies appear as slow, groaning enemies in its ancient-themed levels. Their distinctive shuffling sound became a recognisable shorthand for anything stiff, sleepy or ancient, and it later spread through meme soundboards and short video edits. Creators search for it under Spanish and English names alike, reflecting how widely the game travelled beyond its arcade origins. It remains in use because the sound is short, instantly readable and funny without needing any dialogue or context.