In popular cultureEdit
"YOLO" stands for You Only Live Once. It is often used as a hashtag to bring attention to exciting events or excuse irresponsible behaviors. Most of the time, a person will repeatedly use this term ironically, only to catch themselves using it without being aware and becoming part of the problem.
The acronym appears multicolored on a sign in WWE 13. When an in-game crowd member holds up a YOLO sign to the camera, the chat erupts with YOLO messages. Because the chatters know: You only live once. You only chat once. You only YOLO once.
Gabe Newell yelled this phrase as he leapt from the rafters and dived onto Donkey Kong during the 2013-09-07 stream.