People have called me highly introverted, shy, distant, eccentric, overly serious, intelligent, articulate, stubborn, passionate, and sometimes pretentious.
This changes for any sort of public demonstration, in which I have been repeatedly told I display the traits of a trained thespian despite having no such experience. I think it might have to do with mimicry and an obsession with movies as a kid (would apparently watch the same one in repeated succession) and politics as an adult (I have consumed obscene amounts of punditry and political speech).
I don't have that kind of "public speaking" social anxiety at all. It gets me high in a way. I have anxiety about typical, random discourse and trying to express the proper responses/emotions. Those events would be where the first sentence in my post becomes relevant.
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We seldom realize, for example, that our most private thoughts and emotions are not actually our own. For we think in terms of languages and images which we did not invent, but which were given to us by our society - Alan Watts