Updated: 04/26/2017 by Computer Hope
laughing my ass off

Shorthand 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, LOL, ROFL