A Koan

At work I don't say much, but tend to keep to myself, since people only aggravate my condition, and who are they, anyway? Who am I, for that matter. Who am I? That is a koan, and my reply, whilst sitting before the high monk, is to yell and thrust my right shoulder forward while pounding my chest with my left hand. That is who I am, but I can't tell my co-workers that, not in the office anyway, not if I want to keep my job.