I'm in general agreement with Schere here. How we say things is important beyond the actual substance of the message. At the same time I think there is also another factor to keep in mind. That being that whenever something is written or said, it always has at least three potential meanings. The meaning intended by the speaker, the meaning taken by the intended party, and the meaning taken by third party observers. These three different perspectives can radically shift what the meaning of a statement is for people. For example, I can call Degen the Brave Little Toaster or Ava an Illiterate Heathen. In both cases the statement is part term of endearment and part inside joke. In either case both could be seen as rather insulting statements to anyone that doesn't quite have a grasp on the context for them. This is of course a rather IC example, but the principle applies to both IC and OOC statements.
And going over some of the most recent posts before my own, I'm going to go ahead and say this on a personal note. In my opinion, yes we can be as offensive as we want to be, toward any target person or group of people. I hold that belief, in this instance, for two reasons. In no particular order, firstly, because I'm an American. The whole "freedom of speech" ideal is something I believe in, but I also believe that it goes hand-in-hand with a capacity to be offended without taking radical action. Secondly, I whole-heartedly believe in the following quote;
"No one can make you feel inferior without your consent." -Eleanor Roosevelt
To me, what that means is very simple. Offense is taken, not given. Even in the completely overt cases of hate speech such as racism and other forms of derogatory comments directly aimed at people in heated arguments. But it is in the end just speech, and in the instances where it is just a random comment here or there that could offend it isn't worth getting worked up over, in my opinion. The times action can be justified is when it isn't just a few random comments. When it is a pattern of harassment or taken into action rather than just words over the internet.
Also...what the heck? If you actually look at the term Circlejerk...why is that even offensive? A couple (a bunch) of people mutually satisfying each other. Isn't that like...every group activity people do for fun? Group RP events...people RPing for fun and to provide other people something to RP with and have fun. Sounds like mutual satisfaction seeking to me. *Begins campaign to reclaim the term and make it positive.*