Social Security number at my age?

After retiring, I went to the Social Security office to apply for Social Security. The woman behind the counter asked me for my driver's license to verify my age. I looked in my pockets and realised I had left my wallet at home. I told the woman that I was very sorry, but I would have to go home and come back later. The woman said, 'Unbutton your shirt'. So I opened my shirt revealing my curly silver hair. She said, 'That silver hair on your chest is proof enough for me and she processed my Social Security application.. When I got home, I excitedly told my wife about my experience at the Social Security office. She said, 'You should have dropped your pants. You might have gotten Disability, too'