roflmmffao Share definition Flag rolling on floor laughing my mother fucking fat ass off. guy 1- dude that wuz so funny guy 2- seriously dude i wuz roflmmffao!! roflmmffao by cha_dude_im_white January 20, 2009 0 0 Get merch Get the roflmmffao mug. Buy Now — $32.95 See more merch