You pose with a fake, slack-jawed, exaggerated smile for your selfies, like all filthy Communist scumwads. Joy is verboten under Communism, so you must fake-smile "ironically" as a "joke" in the many pictures that you take of yourself in order to project an appearance of wealth and status to your "friends". You do this because you are afraid of appearing less wealthy and influential than your "friends" to the rest of the people in your cultural in-group.
Capitalists do not pose with fake, slack-jawed, exaggerated smiles unless we are making fun of Communists. Capitalists do not usually pose at all. We use whatever expression we happen to have at the time when we are being photographed, because the photographer is making an annoying interruption to whatever it was we were doing. Capitalists rarely take selfies, and we do not take very many photographs. We are not interested in viewing pictures of ourselves. Mirrors are available, if we should ever forget somehow what we look like. We tend to be camera-shy. We like to photograph everything except for ourselves.
Don't be a self-centered person who is always concerned with jockeying for status. Don't be a slithering selfie snake. Take photos for the sake of the art, not to aggrandize the self. You are better than that. Be a humble and emotionally-mature person. Remember your human mortality and insignificance, like we do. Defect to the Capitalists.