A professor was at a party and became indignant when asked if college professors were absent-minded.

"Professors haven't got bad memory," he declared. "They're not absent-minded. Don't you think I know where I am right now, and don't you think tomorrow I'll know where I was today? Would somebody like to ask me another question?"

"Yes," said another guest. "Is it true that professors are absent-minded and have bad memory?"

"Good!" said the professor. "I knew sooner or later somebody would ask me that question."