The Mark of a Teacher

My youngest daughter, Angi, graduated from University and started teaching at an area school. One day she went with a friend to a nearby restaurant for lunch. A man seated next to her asks, "Are you a teacher?" Suprised but happy, Angi replid, "Why, yes, I certainly am!" She enjoyed a warm feeling throughout the meal; she looked like a teacher, and this made her feel great.

As she was leaving the restaurant, she asked the man, "How did you know I was a teacher?"

"You have chalk dust on your rear", he replied.