My forced smile is really bad. People sometimes get annoyed when they take a photo of me just because of my smile. When I force a smile they still tell me to smile. I'm the one who has to get my photo repeated the most times.
I do something similar. Usually it makes me look either mildly embarrassed (example 1) or smarmy (example 2), but I like it better than my full smile (which is really broad and makes me look like a manticore).
"There's no need to be embarrassed about it, Mr. Spock. It happens to the birds and the bees!"
upon thinking about it more, i think the 5 laughing at the wrong jokes at the wrong times is where the suppression comes from.
i remember talking to my friend about backwards laughing disorder when we were 17.
now i just pollute the air with enough smiles and laughs and chuckles that i get away with nearly anything. i am just an oddball. but, at the same time, when it is too much focused on one other person, he or she will at times get uncomfortable with my amusement.
It's a great disservice to humanity for them to miss out on your smile.
But, I do the same, my smiles turn the corners of my mouth down...but it's more out of amusement. As most pictures I find amusing, having to pose and stand still just looking into the lens. It seems silly. Silly is amusing.