"Rofl" is an acronym that stands for "Rolling on the Floor Laughing." It is commonly used in online communication, such as text messages and social media, to express amusement or laughter. The term conveys a strong reaction to something funny, suggesting that the person is laughing so hard that they might fall over. The use of "rofl" became popular in the early days of the internet, particularly in chat rooms and forums. It is part of a larger set of internet slang that includes other acronyms like LOL (Laughing Out Loud) and LMAO (Laughing My Ass Off). These expressions help convey emotions quickly in digital conversations.