YLIF Share definition Flag Your Life Is Fucked. Made popular by the site FMyLife.com. Usually said in agreement with someone who thinks their life is fucked. "My mom walked in on me getting off and took away my Internet. FML." "YLIF, seriously" YLIF by pseudloli March 28, 2009 0 0 Get merch Get the YLIF mug. Buy Now — $32.95 See more merch
