Smiling buck tooth emoji GIF meme on Twitter explained

What is the smiling buck tooth emoji GIF that's a popular meme reaction on Twitter? Where did it come from?

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Smiling Buck Tooth Emoji

What does this emoji means 👀? - Quora

Nerd Emoji Memes Gif - IceGif

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Buck Tooth Emoji GIF, Smiling Buck Tooth Emoji

Twitter-Sentiment-Analysis/sample_bag_of_words.json at master · AnmolMago/ Twitter-Sentiment-Analysis · GitHub

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What is the smiling buck tooth emoji GIF that's popular on Twitter?