Reminds me of a joke:

A man goes to a doctor and notices that the doctor has the same name as a classmate in high school.
As soon as he sees the doctor he is sure that he cannot possibly be his classmate since he is much to old.
He asks the doctor "By any chance did you go to Washington High School?"
The doctor says "Yes, class of 19xx."
The man says "You were in my class!"
The doctor looks at him and says "What did you teach?"