LMAO is an acronym that stands for Laughing My Ass Off.
The acronym is primarily used in text messaging, chatting, or on social media. It’s used to convey lots of laughter when something is very funny such as a joke, a meme or a video. While there are many variations of LMAO, the most popular is LMFAO, which is an acronym for Laughing My F*cking Ass Off.
John: “Check out this video of a cat on a Roomba!”