Me tengo que ir is a common everyday phrase in Spanish, so its life online comes from timing rather than a single known source recording. Spanish speaking users share the short clip in chats and short videos as a ready made exit line, similar to an audio sticker. It works in many contexts because everyone understands the excuse instantly, from family chats to gaming lobbies. The brevity helps it loop well in edits and soundboards, and it remains popular as a light, non offensive way to signal you are done with a situation.