Here's a joke for October!

A recently divorced woman moved back to her home town hoping to start over again. While making a dentist appointment she was surprised to see she recognized the dentist’s name as a good looking boy from her high school almost 25 years earlier. However, upon walking into the dentist’s office, she quickly realized he must be someone else. He was bald, had a big beer belly, and looked a lot older. Just to be sure though, on her way out she asked him if he went to the high school that she had attended.
“Yeah”, he responded, “I graduated in 91.”
“Oh my gosh”, the woman excitedly said “you were in my class.”
“Really”, he said that’s interesting, “what class did you teach?”