Useless; good for nothing; of little value, importance. Not worth paying attention to.

Intelligence agency term for "psychological operation". A government or corporate-sponsored operation, usually taking the form of a "terrorist attack" or "crazed gunman on a spree", with the intent of panicking the public into demanding more police and laws inhibiting freedom. Psyops are usually carried out by drugging a civilian or group of civilians with aggression-promoting drugs, psyching them up, arming them, and sending them out to commit mayhem. Government-sponsored terrorism. See also blackshirts, conspiracy

Someone who acts like they have your back, but when you really need them they abandon you.

1.someone who is on the verge of getting their ass kicked. They are usually the annoying little so-called tuff guys.
2. The most annoying person on the face of the earth in your views.

Incompetent member of a famous family who relies on others accomplishments for his own fame and fortune.

One who gained money and/or success through no real work of his own but instead rode on the coattails of other people.

Someone who has little value, think the world revolves around him, uses others tragedys to gain personally in their own life