It can be found in the dictionary. It's not a word that applies to many posts. But it describes the posts some have made on these exchanges precisely. That is why I have used it.
Back off or leave me the hell alone.
You may choose to end your conversation with me at any time. No one is forcing you to post.
I put out my past ideologies for everybody and their brother to see,so they can see who they're dealing with up front. I didn't try to hide who I was. But you, you and your sanctimonious smug attitude, think you are the be all end all. Well, let me explain something to you Mr/Mrs/Ms, your opinions don't mean squat to me. You are a nasty, uncivil jerk and all that that entails. Was that OBTUSE enough for ya? If not, we can take this to the back alley I've heard so much about.