What is kk meaning?

As an AI language model, I don't have access to cultural knowledge or slang meanings that may not be widely known or understood. The term "kk" can have different meanings depending on the context in which it is used. In general, it is often used in online messaging as a short way to say "ok" or "got it". It can also be used to express agreement with what someone has said or to indicate that a conversation is coming to an end. However, it's important to note that the term may have different meanings in various contexts and cultures.