If slang is allowed (and I believe it is), then this insulting term should be fine. If it it not, then where do we draw the line?
My view is that if there is a reasonably polite way of saying something, then that's the way it should be said. It is hardly ever necessary to use derogatory terms, and I feel that it lowers the tone of the site as a whole and can given the wrong impression. Allowing these types of terms also then sets an example and encourages further use.
This is a pure duplicate of Is profanity allowed on RPG.SE? and in general violates the "Be Nice" overarching rule of the Stack. The post in question currently states:
"Or to use slang terms, a douchebag, or a jerk, or an asshole... Take your pick of insulting term, which of course are gender/sex/racial non-specific."
Two of those terms are clearly inappropriate in a professional environment. They will be edited out and further use may result in behavioral warnings.
We have more than enough trouble with arguments and people baiting each other on this site without allowing curses or intensifiers. Keep it professional and family appropriate and we can more easily maintain a civil atmosphere.