Omgrotflmaool Share definition Flag An acronym for: Oh My God Rolling On The Floor Laughing My Ass Off Out Loud "He was so embarrassed, he shat his pants!" "Omgrotflmaool!" Omgrotflmaool by Ilikeswords March 16, 2010 0 0 Get merch Get the Omgrotflmaool mug. Buy Now — $32.95 See more merch