A bloke is in the checkout line at the Supermarket when he notices that the
rather dishy blonde behind him has just raised her hand and smiled hello to
him.
He is rather taken aback that such a looker is 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 may be 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 had been unfaithful,
"Christ!" He says, "Are you that stripogram from my stag night that I
shagged on the snooker table in front of all my mates whilst your mate
whipped me with some wet celery and stuck a cucumber up my arse?"
"No," she replies, "I'm your son's English Teacher".