Updated: 04/26/2017 by Computer Hope

laughing my ass offShorthand for Laugh My A** Off, LMAO is commonly used in chat rooms and text-based communications. Another common alternative to LMAO is LMFAO and LMMFAO, which is short for Laugh My F***ing A** Off and Laughing My Mother F***ing A** Off.

Chat terms, ROFL, LOL