few of them are...

Fake friends are a term used to describe fair-weather or selfish friends. True friends are like diamonds (precious and rare), while fake friends are like autumn leaves found everywhere. A faithful friend is the medicine of life. Friends are rightly called an alter ego and they are perhaps those people with whom we can share our joys and sorrows. Adversity is the litmus test of any friendship. Fake friends are those friends who deceive us and break our trust somewhere down the line. They talk behind our back rather than talking face to face with us. In times of adversity, they desert others and leave them in a lurch. One should be careful while choosing friends and keep such fake friends at arm’s length. Joan Jett had once rightly remarked, “You got nothing to lose. You don't lose when you lose fake friends.” It is always good to keep fake or fair-weather friends at arm’s length. Remember, a man is known by the company he keeps.