rotfflmmfao Share definition Flag Internet meme. Rolling on the fucking floor, laughing my mother fucking ass off. Used when extreme profanity usage is necessary. Jim: Penis.Ted: ROTFFLMMFAO!!!1 rotfflmmfao by b3n890 November 18, 2009 0 0 Get merch Get the rotfflmmfao mug. Buy Now — $32.95 See more merch