Best Man Or Best Women

You Know when you get married you will need to choose who will be your best man or bridesmaid. This is actually a question that hit me when I attended a wedding on Saturday. I was wondering when I get married who will be my best man. For some weddings the best man will be either their primary school friend, sech school friend or even church friends. So now I am starting to wonder who will mine be. If you all wondering if I am getting married, no not yet, but I am just wondering only who will be when the day comes :P