ROFL phrase 2verb 1forms 3 phrase2 •(Internet) Initialism of rolling on the floor, laughing; used to indicate great amusement. •(old-fashioned, rare) Initialism of ran out for lunch. verb1 •(Internet) Initialism of roll on the floor, laughing; to experience great amusement at something.My REFs may be ROFLing⁷ while I’m definitely not. My RLFs will know the minute they see me or talk to me on the phone that I need cheering up. — 2008 formsROFLed · ROFLing · ROFLs