Lib Share definition Flag Occasionally used ironically as a shorthand of "liberal" to insult someone who may or may not actually be a liberal. Jeff: Fuck you, you're a lib Joe: Fuck you. Aren't you a lib? Jeff: You're a lib, fuck you. Lib by sid_ October 5, 2020 0 0 Get merch Get the Lib mug. Buy Now — $32.95 See more merch