LMFAOAOAO Share definition Flag A keyboard spam used to express and exaggerated amount of laughter. A derivative from "LMAO", or "LMFAO". "BYE LMFAOAOAOA" "girl wtf LMAOAO" "The shoes have me crying LMFOAOAO" LMFAOAOAO by chinchllla November 22, 2023 0 0 Get merch Get the LMFAOAOAO mug. Buy Now — $32.95 See more merch