ROFL is an internet slang initialism used to convey hilarity. It stands for Rolling On The Floor Laughing. It is often used in online communication, such as text messages, social media, and discussion groups, to indicate that something is very funny. It is one of many initialisms for expressing bodily reactions, in particular laughter, as text, including initialisms for more emphatic expressions of laughter such as LMAO ("laughing my ass off") and ROTFL ("rolling on the floor laughing") .