The phrase comes from everyday German slang, where Digga developed in Hamburg youth speech as a friendly way to address a mate, roughly like bro or dude. Lügt is simply the verb for is lying, so the whole line is understood instantly by German speakers without any setup. Online the clip circulates as a standalone reaction on soundboards and in short video edits, detached from any single source. Its appeal is its brevity and tone, allowing creators to drop a clear, joking accusation into chats, streams and gaming clips without pausing to explain the joke.