In our faddy, disposable, Internet-informed, digital age, there are even word trends that appear to be custom-designed to be short-lived and epehemeral, words and phrases that are considered no longer trendy once they reach anything close to mainstream usage. Examples might be bae, on fleek, YOLO (you only live once), fanute, etc. Resources like the Urban Dictionary exist for the rest of us to keep track of such fleeting phenomena.