Man Logic
The state in a mans mind where no one else but him understands any reasoning behind his actions. These reasons seem perfectly valid to the man, they can be anything from a reason that he is angry to a reason that he beats the crap out of someone.
such as when a man becomes incredibly jealous of another man hanging out with his girlfriend, so much so that he goes to man logic and he would kill the other man this serving no purpose would get him a life sentance and his girlfriend would end up with someone else anyway.