YOLO WHAT YOU'RE SAYING: An acronym for "You Only Live Once.' We can thank rapper Drake for this phrase, so live life to the fullest people. YOLO is often used before taking a risk or questioning a situation. YOLO has also been named the worst word or phrase of 2012 by our very own associate books editor Zoë Triska. USED IN EVERYDAY LIFE: "Hey, should I chop off all my hair?" "YOLO"