A yellow face with small, open eyes and a large, round mouth, slack with surprise or shock, as if saying Wow! or Oh my! May convey such feelings as awe or disbelief, often milder or more ironic in tone than 😱 Face Screaming in Fear.
📅 Face with Open Mouth was approved as part of Unicode 6.1 in 2012
and added to Emoji 1.0 in 2015.