Mark Twain - A feud is this way: A man has a quarrel...

A feud is this way: A man has a quarrel with another man, and kills him; then that other man's brother kills him; then the other brothers, on both sides, goes for one another; then the cousins chip in -- and by and by everybody's killed off, and there ain't no more feud. But it's kind of slow, and takes a long time.