The emoji equivalent of 'I'm dying' — added in Unicode 9.0 (2016) specifically because 😂 had become so overused that people needed a more extreme option for actual uncontrollable laughter. It quickly became one of the most-used emoji worldwide, though some style guides now consider it slightly dated, the way 'LOL' feels dated in text.
Keywords: crying, face, floor, funny, haha, happy, hehe, hilarious, joy, laugh, lmao, lol, rofl, roflmao, rolling, tear