The phrase comes from Kassel in northern Hesse, where nit is the local dialect form of nicht, so the line simply means I do not want that. It circulated in Germany during the Corona period as a short WhatsApp and social media audio, passed around whenever new rules or everyday annoyances came up. Its appeal is the local, blunt delivery rather than any famous speaker, and German users still reuse it as a general refusal meme long after the original pandemic context has faded for most people online today.