Hör domma auf is a colloquial German phrase, a shortened spoken form of hör doch mal auf, which translates roughly to stop that or give it a rest. The clip circulates online as a short reaction sound rather than as a quote tied to a confirmed film or show. Its popularity comes from how universal the sentiment is, so German speaking creators use it in edits, streams and group chats whenever someone is being deliberately irritating, spamming a joke, or pushing a bit too far for comic effect.