One day a man walked into a bar, sat down on a stool, ordered a drink and listened to the conversations going on around him.  From a corner he heard two men talking...

        "So, what country are ye from?"
        "Why, Great Britain, best in the world!"
        "Well wouldn't you know? I come from there too! What part of Britain are ye from?"
        "Scotland, me laddie!"
        "That's amazing! I come from there too! So what town are ye from?"
        "<generic Scottish town> of course!"
        "What a coincidence! So do I! What neighborhood are ye from?"
        "I live right by the old church."
        "Of all the luck! So did I!"

        The bartender, seeing the man's puzzled expression, said "Yep, the O'Leary brothers are drinking again."