The string of z letters has been used in comics and cartoons for decades to show sleeping without any words, and this audio version turns that shorthand into a playable snore for edits and chats. Shared as a simple titled clip of repeated z characters, it spread as a reaction sound rather than a clip tied to one show or speaker. Creators keep reusing it because the meaning needs no setup, works over still images and video, and instantly signals sleep, boredom or tuning out.