A red flag? To defend oneself when felt attacked is a red flag? Maybe it was misinterpreted, but it's not a red flag to refute what is perceived as a slight. Ok a perfect individual would ignore a troll in the instance of being slighted, but I've never heard of a perfect individual and am sure neither have you. We all have our flaws. I think your perception of his reaction being a red flag of his possible disingenuousness potentially reveals more of your idiosyncrasies than his. Now I'm just playfully making a point, but it holds more validity when analyzed than your unsubstantiated claim. Before you debate me, stop and just think about what I'm really saying instead of reacting to it as an attack on you.