A guy goes to the Supermarket and see's this georgous woman waving at him
She says, 'Hello.'
He's rather taken aback because he can't place where he knows her from. So he asks, '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.
So he asks, 'Are you the stripper from the bachelor party that I made love to?
She looks into his eyes and says calmly,
'No, I'm your son's teacher.'