abbreviation for "rolling on the floor laughing my fucking ass off

One of the highest standard levels lazy people type to express laughter.

Rolling on the floor laughing my fucking ass off

Abbreviation of; Rolling on the floor laughing my fucking ass off. Used by lazy people in online conversations, chatrooms online games, etc. when something has amused them.

Note: almost impossible to actually achieve whilst typing said word on a keyboard.

Its a term that implies extreme laughter.

Rolling on floor laughing my fucking ass off

Roflmfao (internet acronym) - Rolling On The Floor Laughing My Fucking Ass Off.
Mostly used in chat rooms and games, like "lol" (Laughing Out Loud) is this often used to laugh at people that are n00bs or people that has said something n00bish.
Roflmfao comes from the commonly used internet acronym rofl.

an acronym used in online games or chatrooms combining the acronyms "rofl" and "lmfao". It usually means you are laughing harder than laughing your ass off.