The cold face emoji is one of many you can use to express your feelings. The blue face emoji shows a grimacing smile. The colour blue is usually associated with cold - as opposed to red for hot.

Spotting it is straightforward enough. But can you do it in ten seconds? A sad face devil emoji is hidden among a load of smiling devil emoji. So far, almost 170,000 people have liked the video.

A smiley face, a face laughing with ... are the crying while laughing emoji followed by the thumbs up, heart, rolling on the floor laughing, and the sad emoji with a teardrop.