A woman visited a plastic surgeon who told her about a new procedure called 'The Knob,' where a small knob is placed at the top of the woman's head - which could be turned to tighten up her skin and produce the effect of a brand new face-lift. Of course, the woman wanted 'The Knob.' Over the course of the years, the woman tightened the knob, and the effects were wonderful, the woman remained young looking and vibrant. After fifteen years, the woman returned to the surgeon with two problems. 'All these years, everything has been working just fine. I've had to turn the knob many times an