You get annoyed, you start getting angry. Your blood pressure goes up and you feel hot. You think you have the right opinion, and the other is wrong, and he is still arguing! You just can't stop talking. You want to show your anger and prove your correctness. You get angrier, and you are about to explode! You are about to lose control and make a very stupid thing that you will repent doing later.
This what happens when we get angry. We get angry and try to act in the midest of our anger: the fatal mistake we do. At times of anger the person is not sane enough to make actions or take decisions. Never attempt to do that while you are angry.
If you watch yourself , you will find a thin line that when you cross you get into this state of anger and temporary insanity. The best thing is to avoid stepping over that line from the start. Do not let yourself reach the point where you have no control over your words &actions. You are the only one who will be harmed, or say the first one. The high blood presure, the hot flush, the headache and all the irritability &annoyance are affecting no one else but yourself.
Do yourself this favor and try to control your anger. Just try to do it once, you will find that you can REALLY control your temper. Do not step over the thin line and stay on the sane side of life :D