roflmfaomfg Share definition Flag roflmfaomfg is rolling on floor laughing my fricken ass off my fricking god. Mostly, its the combination of rofl,mfao, omfg I had an extreme roflmfaomfg yesterday when my friend told me an extremly funny joke. roflmfaomfg by Roflmonger March 8, 2009 0 0 Get merch Get the roflmfaomfg mug. Buy Now — $32.95 See more merch