Little is documented about where sadborsue first came from, and the clip circulates mostly under the shortened tag sadbor on TikTok style soundboards. That unclear origin is part of how it spread, shared as a ready made reaction rather than tied to a named scene or speaker. Users save it alongside other short sad reaction clips such as miau triste, reposting it in edits, comments and compilations whenever a small letdown needs a sound. Its continued use comes from that flexibility rather than a single viral moment.