So this might sound weird, but for me, to this day, I think an extra wide smile or grin can be very creepy. I don't remember where that originated from, but I do remember it appearing in a nightmare of mine.
There was this humanoid figure without a real face. They just had that unnaturally wide smile, reaching from one corner of their non-existend eye to the other. They also had no teeth. That smile was just filled with... nothing? It was just blank. It had basically the form of a white crescent.
If you remember Joo Dee from Avatar: the last airbender. That Joo Dee from the earth-kingdom's capital, that 'welcomed' and supervised the avatar group. I think her smile was a bit creepy too (which was completely intentional that way of course)364Please respect copyright.PENANAYL2GtkwYnV
So yeah, that would be it for me, I guess. Unnaturally wide smiles. They're creepy.
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