1. A spring loaded, metal rod used to hang drapes and curtains.
2. An uptight, dick head of a douche bag. Usually your boss or ass wipe of a co-worker. Tension Rods cause undue stress and pressure in the workplace due to incompetence, mismanagement, laziness and poor performance.
Sandra hung her new curtains with a tension rod.
Frank's boss is the ultimate douche. He is what you might say, a real tension rod.