Good night America is a familiar broadcast farewell phrase, long associated with nightly television sign-offs in the United States. Short clips of such closings circulate online as soundboard sounds because they are instantly recognisable, easy to place at the end of a video, and carry a sense of finality that a simple goodbye lacks. Creators reuse it for parody news segments, late-night style edits and stream endings, where the formal, old-school tone adds humour or warmth. Its short length makes it especially useful for TikTok, Reels and YouTube outros.