So this word always bothered me because it feels like a word, it's in the dictionary, even though it's classified as a nonstandard. But then I found a few articles that showed that people basically use it in the wrong context. In an informal setting it can be used (correctly) to shut a conversation down, basically an abrupt ending. To me it makes sense, well kind of. It is however, not to be used in a formal setting i.e. essays, speeches, meetings etc. I like to use it now just to upset people ha ha.