I have the patience of several monestaries, and it takes a heck of lot for me to lose my temper however -
when it does go, my voice rises to a level that very few people have ever heard, and my eyes do flash (my children assure me!) and my depthless vat of sarcasm is given full reign.
I usually walk away from the situation, because the notion of violence while in a rage really worries me - never done anything yet, but circumstances can dictate behaviour which is not appropriate.
If I am in that much of a temper, it gives me a headache which will last a couple of hours, but i do calm down pretty quickly.
It is all the more shocking, even for people who know me well, because it is so rare, and few of them have ever seen it in full flow - family excepted.