: A user finds a file titled Kittens 13.mp4 on an old hard drive, a shady forum, or a file-sharing site.
The story usually follows a familiar "lost media" or "deep web" trope: Kittens 13.mp4
: It originated in online horror communities (like 4chan’s /x/ board or r/nosleep) as a creative writing exercise. : A user finds a file titled Kittens 13