Someone in an organization I am in here at school smiles all the time. It's as if her face is just naturally arranged to be smiling, and she has to make a concerted effort to not smile. The overwhelming majority of the time it's genuine, though some NTs in the organization have said *THEY* have a tough time trying to figure things out when she's smiling but not feeling that way.
She is one of the most positive, nicest people you'll ever meet though, so it really fits her character. That given, I think it's kinda cool really.
I can understand why people would be upset at someone who gave fake smiles all the time, but that's not the case here.
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"So when they rolled their eyes at me and told me 'I ain't normal,' I always took it as a compliment"--Katrina Elam