With no clear single source attached to the name, Mary Worried has circulated mainly as a short TikTok reaction sound rather than a quoted scene. Creators reuse the label for the anxious mood it creates, dropping it into edits where a character, pet or person looks concerned about what happens next. Its short length makes it easy to loop under captions, stitch into POV videos and reuse across different fandoms and everyday situations. That flexibility keeps it in rotation for stressed, awkward and suspenseful moments.