Rolling on the Floor Laughing: Also Known As, ROFL Emoji.
Sloping face laughing, eyes closed and tears come out, an open mouth with markedly teeth.
ROFL: To express that you are happy or something is funny, and Make the spontaneous sounds with your voice.
Used in extremely funny situations, or speaking hysterical joke.
* Approved as part of Unicode 9.0 in 2016.
* Added to Emoji 3.0 in 2016.