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That stupid finger thing people do when they take selfies on Facebook, like they're trying to look like a hot mess. It’s like they’re saying, 'Look at me, I’m so fake it’s annoying.'
My cousin did the Facebook finger in front of a wall of mirrors and still looked like a disaster.
My mom did the Facebook finger and accidentally bit her lip.
My brother did the Facebook finger and it looked like he was trying to flirt with a ghost.