What does 'ROFL' mean in online conversations?

In online conversations, “ROFL” means “rolling on the floor laughing.” It is an emphatic way to show that something is extremely funny, often stronger than simply writing “LOL,” or laughing out loud.

Like many internet initialisms, ROFL became useful because text does not carry the vocal tone, facial expression, or physical reaction present in face-to-face conversation. A person may use it sincerely after a very funny message, or loosely to show amusement, exaggeration, or friendly enthusiasm.

“ROFL” is also written as “ROFL” without punctuation or as “ROTF,” while “ROTFL” expands the phrase as “rolling on the floor laughing.” It is sometimes combined with “LMAO,” producing “ROFLMAO,” for extra emphasis. The expression is figurative for most users: it describes an exaggerated reaction rather than a literal report that someone has fallen onto the floor. In professional settings, a simpler response such as “That’s funny” may be more appropriate.