acronym for You Only Live Once meaning:
1. go ahead & take risks; live your life to the fullest
2. the girl that says this does as a code meaning she'll do anal
3. You Obviously Lack Originality(posted in response to yet another facebook status that says, "YOLO!")
1. I'm going bungee jumping this weekend, because YOLO!
2. he: I'm a bit of a backdoor
man. What do you think of that?
she: oh well, yolo!
3. Status Change: YOU ONLY LIVE ONCE! (YOLO)
reply: YOLO! YOU OBVIOUSLY LACK ORIGINALITY I've seen this same post on my wall 40 times since noon yesterday!