Hi, I'm Vanessa from SpeakEnglishWithVanessa.com. Goodbye. See you never. Just kidding. Let's talk about it. I've heard many English learners say, "Goodbye," but, oh boy, this sounds so serious. Not every time that we say goodbye is serious. We only use goodbye when we're feeling angry and we want to slam the door. "Goodbye." Or maybe if we're really sad, "Goodbye," and we might not see someone for a really long time.