Lflf Share definition Flag Lflf means dumb, it’s a beautiful word to describe someone as “dumb” - or “lflf”.Pronunciation : “laflaf”. “Oh man you forgot your keys in your door? Ugh you’re such a lflf” Lflf by iamalflf January 9, 2022 0 0 Get merch Get the Lflf mug. Buy Now — $32.95 See more merch