I've never associated the term "couch potato" with health. I've always associated it with immobility. A couch potato sits on a sofa and doesn't move. Last time I checked, the ability to move of its own volition was not one of the potato's principle characteristics. Are the protesting potato purveyors trying to tell us that potatoes are, in fact, mobile? Will we be seeing potatoes arising from sofas and running marathons?