DNR means DO NOT RESUSCITATE. When a patient in the hospital is in very bad shape, and everyone including them knows they are going to die soon no matter what medical miracles are applied, it is a great relief to see a DNR order on their chart. No one wants to use horribly violent measures to save a life that is on its way out anyway, but if there is no DNR order, the hospital staff is required by law to do CPR etc on you if your heart stops. This version is sung by a few acute care nurses, and sung to Rockstar by Nickelback. It expresses the sentiment of having had quite enough medical care already, and wishing to be allowed to live and die in peace. And it's pretty cute. "We all just wanna be a DNR."