A man wonders if having sex on the Sabbath is a sin because he is not sure if sex is work or play. So he goes to a priest and asks for his opinion on this question. The priest says he must ask his superiors and eventually the pope will need to be consulted. The priest finally gets back to the man with, "My son, infallibly, the pope simply knows, sex is work and is therefore not permitted on Sundays."
The man is uneasy and thinks: "What does a priest know about sex?" So he goes to a minister who, after all, is a married man and experienced in this matter. He queries the minister and is told that a week long study of the bible texts will be needed to confirm his own opinion and he will get back to him. After this week, the minister gets back to the man and tells him that the bible indicates that Sex is work and therefore not for the Sabbath!
Not pleased with the reply, he seeks out a Rabbi, a man of thousands of years of tradition and knowledge. The Rabbi immediately replies , "My son, sex is definitely play."
"Rabbi, how can you be so sure when so many others tell me sex is work?"
The Rabbi softly speaks, "My son, if sex were work, my wife would have the maid do it."