Jewish Sex Therapy

(Have you heard this one?)
An older Jewish gentleman marries a younger lady, and they are very much in love.
However, no matter what the husband does sexually, the woman never achieves orgasm.
Since a Jewish wife is entitled to sexual pleasure, they seek advice from a Rabbi.
The Rabbi listens to their story, strokes his beard and makes the following suggestion,
"hire a strapping young man, and while the two of you are making love, have the young man wave a towel over you. That will help your wife fantasize and help bring on orgasm."
They go home and follow the Rabbi's advice, they hire a handsome young man and he waves a towel over them as they make love.
But it doesn't help. They are perplexed and go back to the Rabbi.
"OK says the Rabbi, try it in reverse, have the young make make love to the wife and you wave the towel over them."
Once again they follow the Rabbi's advice and the older man enthusiastically waves the towel as the handsome young man makes love to the wife.
The wife has an enourmous, room- shaking, screaming orgasm.
The husband smiles, looks at the young man and says to him triumphantly, " You see, THAT'S the way to wave a towel!"