1) Acronym. Stands for "Fuck My Life". Used liberally in posts on social networking sites, instant messages, and text messages. Generally used as shorthand for "nothing is going right in my life" or " my life sucks ".2) Name/Song Title. "FML" is the name of a song by popular electronic music artist deadmau5 . FML is track one off the album entitled "For Lack of a Better Name" released in 2009.