Thanks to Melissa for this one, and many of the other ones I've posted up here. If you keep on forwarding them, I'll keep on posting them!
A guy is in a line-up at the Super Market when he notices that the rather dishy blonde behind him has just raised her hand and smiled hello to him.
He's rather taken aback that such a looker 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 had been unfaithful, "Christ!" he says "are you that stripper on my stag night that I screwed on the snooker table in front of all my buddies while your friend whipped me with some wet celery and stuck a cucumber up my Ass
No she replies, "I'm your son's English Teacher."