As an INTP, I can't say I've ever felt the need to make fun of someone I don't know well to their face. Obviously, close friends get verbally marauded from time to time, but that's all in good fun. Recently my boss has been making fun of me for being overweight. i.e: "You going to the gym after work today?" "where'd you go to high school? they didn't have a gym there did they huh?" Obviously, I resorted to defending myself logically which disarmed him, but either way. It got me to thinking, what drives him to attack me? I figure he's either intimidated by me for some reason, doesn't understand me and subconsciously wants to get to know me better, or, struggled with weight issues as a young person and identifies with me and doesn't like it. Also, I've noticed that when he attacks me, my mind has a sort of immediate transitional period to go from "normal work mode" to "conflict resolution mode" where I ask myself "oh, wait... is this guy making fun of me again?" What gives people the need, or even the balls, to call someone else out though?