When a guy on a forum gives a rude response to your post, you respond in an identical way (as in taking his post word for word and changing some words so it turns everything back around on him), and a moderator comes in to tell you off for being "condescending and rude" without saying a word to the older, more established member who came in swinging.
The same moderator that I got into it with the "20 character minimum in posts" rule, who said that the public forum thread made about it wasn't meant for debate and locked it after I bothered to argue the point.