A guy goes to the supermarket and notices an attractive woman waving at him. She says hello, and he’s rather taken aback because he can’t place where he knows her from.
So he says, “Do you know me?”
To which she replies, “I think you’re the father of one of my kids.”
Now his mind travels back to the only time he has ever been unfaithful to his wife and says, “My God, are you the woman from my bachelor party that I made love to near the pool and then started crying, realizing I cheated on my wife and beating myself for this?”
She looks into his eyes and says calmly, “No, I’m your son’s teacher.”