Hej då is the standard casual goodbye in Swedish, used the way English speakers say bye. This one-second clip circulates as a tiny soundboard button with no confirmed original speaker, which is common for short user-uploaded voice clips. It gets picked up in language memes, Scandinavian-themed edits and multiplayer lobbies where players say farewell in another language. Because the phrase is short, universally understood in context and easy to recognize, it keeps working as a clean outro that needs no translation for most viewers.