Smiley face, eyes are closed and curved, mouth open too much, and showing teeth.
There is considerable similarity with Smiling Face With Open Mouth And Cold Sweat, Smiling Face With Open Mouth And Closed Eyes, Grinning Face with Smiling Eyes may not distinguish between them even with a few differences.
Used to express happiness, or something extremely funny.
* Approved as part of Unicode 6.0 in 2010.
* Added to Emoji 1.0 in 2015.