Oh, is there a threshold? How many people have to be offended by it before it counts? Can you give me a number? I find 'idiot' to be a derogatory slur, does that mean nothing to you?

And note what I said in a previous commend about the elder meaning of 'idiot.' Pretty much means the same thing as 'retard' but people don't think of it that way anymore. You're taking such a traditional mindset about this, kind of "just what your parents told you."