OMGGROTFLMAOOL Share definition Flag Computer slang meaning, "Oh my good God rolling on the floor laughing my ass off out loud" OMGGROTFLMAOOL!!! That was hilarious!!! OMGGROTFLMAOOL by Jimm Banana April 5, 2007 0 0 Get merch Get the OMGGROTFLMAOOL mug. Buy Now — $32.95 See more merch