A guy makes a routine stop at the supermarket.....a very good looking blond woman waves at him and gives him a big smile. That was too much for him to handle. He goes over and says "Do I know you?"
She said "I think you're the father of one of my children." He quickly recounts the one time that he was unfaithful....."Oh #$%*, are you that stripper that came to my friends bachelor party that I screwed on the pool table while everyone watched?"
She replies by saying "No, I'm your son's third grade teacher!"
