Sarcasm

I know that with Tom, Brittanie, and I in this house, we have more sarcasm in the house than the average family but I can't imagine Katie is picking up this much attitude this young from us. It has to be her personality. We had yet another argument a minute ago. Actually I don't argue, I just told her how it was and told her I don't care what her opinion is, I told her how it is! She said "Fine then be wrong! Wrong! Wrong! Wrong!" Anyone else out there go through this kind of mouth with a 4-year-old?