How classmates change Ego Buster=========== While waiting for my first appointment in the reception room ofa new dentist, I noticed his certificate, which bore his fullname. Suddenly, I remembered that a tall, handsome boy with the samename had been in my high school class some 30 years ago. Upon seeing him, however, I quickly discarded any such thought.This balding, gray-haired man with the deeply lined face was too old to have been my classmate. After he had examined my teeth, I asked him if he had attended the local high school. "Yes," he replied. "When did you graduate?" I asked. He answered, "In 1964." "Why, you were in my class!" I exclaimed. He looked at me closely and then asked, "What did you teach?"