Dentist

Have you ever been guilty of looking at others your own age and thinking, "Surely I can't look that old?"
I was sitting in the waiting room for my first appointment with a new dentist. I noticed his degree on the wall, which bore his full name.
Suddenly, I remembered a tall, handsome, dark-haired boy with the same name had been in my local high school class nearly 40 years ago.
Could he be the same lad that I had a secret crush on, way back then?
Upon seeing him, however, I quickly discarded any such thought.
This balding, grey-haired man with the deeply lined face was way too old to have been my classmate.
After he examined my teeth, I asked him if he had attended my old high school.
"Yes. Yes, I did." he gleamed with pride.
"When did you graduate?" I asked. He answered, " In 1968. Why do you ask?"
"You were in my class!" I exclaimed. He looked at me closely.
Then, that ugly, old, wrinkled, bald, fat, grey,
decrepit so and so asked, "What did you teach?"