A man wonders if having sex on the Sabbath is a sin because he is not sure if sex is work or play. He asks a priest for his opinion on this question.
The priest says after consulting the Bible, "My son, after an exhaustive search I am positive sex is work and is not permitted on Sundays."
But the man is still unsure, thinking, after all, "What does a priest know of sex?"
So he decides to go to a minister - a married man - for the answer. But he receives the same reply - sex is work and not for the Sabbath.
Still not pleased with the reply, he seeks out the ultimate authority: a man of thousands of years tradition and knowledge... a rabbi.
The rabbi ponders the question and states, "My son, sex is definitely play."
The man replies, "Rabbi, how can you be so sure when so many others tell me sex is work?!"
The rabbi softly speaks, "If sex were work my wife would have the maid do it."