This guy is in line at the Super Market when he notices a hot blonde behind
him has just raised her hand and smiled hello to him.

He is stunned that such a hottie would be waving to him, and although
familiar he can't place where he might know her from, so he says "sorry do
you know me?"

She replies "I maybe mistaken, but I thought you might be the father of one
of my children!"

His mind shoots back to the one and only time he has been unfaithful,
"Christ!" he says "are you that stripper at my bachelor party that I had on
the pool table in front of all my friends while your partner whipped me
with some wet celery and stuck a cucumber up my ass?"

"No" she replies, "I'm your son's English Teacher