The research worker, conducting a sex survey, phoned one of the husbands whose completed form was spread out before him.

Mr Pullman, there seems to be some discrepancies between the answers of you and your wife to the same question. For example, under Frequency of Intercourse you wrote Three times a week and your wife Three times a night.

Well, thats right, replied the husband, but thats only until we have paid off the mortgage on the house.