Are you an ‘armchair quarterback?’ Are you constantly thinking about what somebody said, or are you interpreting things they said (or wish they had said)?
That is what an armchair quarterback does. An armchair quarterback will break down a conversation they had with a woman (or a man if you’re a woman).
If you are an armchair quarterback, what you’ll do is grab the ear of one of your friends and break down the entire exchange — line by line. What happens here is that you end up breaking down and interpreting the situation based on a want or a need, and you end up skewing it in your direction.