Listen, I could have plenty of fun with a comment like that. But let me be serious instead. I think that what you were trying to do, or what you sincerely believe you succeeded in doing, just didn't come off that way as widely as you believe. The insults that you directed at Rosie did not come off as limited only to her. They came off as contempt for people with those conditions.
You can argue that your later sentences were meant to show that you care very much about people afflicted with these conditions, and I accept your word that you do. But I think the lesson here is that when you have already used language as raw as "fat ass retard," and "piece of family crap," there is a very real tendency for that kind of message to get lost.
Oh, hell, I give up.
My only position now is to argue that, My rant really WAS funny, and you didn't get it. No one can win that argument.
Hope you enjoy the movie tonight! (Joke.)