Why? Here is his left side.
A Triple chin.
Newsweek interview , I think from 2001.
CM: John tried his best to lighten the mood, telling jokes. But there was no avoiding thinking about what might happen. The day of the operation was very hard. He was in surgery for about nine hours. In the end, the surgery went well...
JM: The operation this time was pretty extensive. They removed the tumor on my temple, and because the incision was so large they had to take skin from my neck to cover the wound. They actually stretched skin from my neck up behind and over my ear to my temple and then stitched it in place. Quite an interesting feat--and one requiring a degree of, ah, elasticity I didn't know I had. Healing from that took quite a bit of time, at least six months. And I recently went back in to have another minor surgery to minimize the scarring. I still don't have feeling in parts of my face and neck, since it takes a long time for nerve endings to regenerate. I consider myself lucky. With the help of my doctors, we caught the cancer early both times and it didn't spread. So I didn't need chemotherapy or radiation, which would have been far more painful, and may not have been as successful against this kind of disease.