People unclear on the concept

An elderly Jewish gentleman marries a much younger woman, but no matter what the husband does sexually, his young wife never achieves an orgasm.

Since a Jewish wife is entitled to sexual pleasure, they approach their rabbi and ask his advice. 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 the wife fantasize and bring on an orgasm."

So 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 and the young wife is still unsatisfied. They return to the rabbi and he says, "Let's try it reversed. Have the young man make love to your wife while you wave the towel over them."

Once again, they follow the rabbi's advice. The young man gets into bed with the wife while the husband stands over them waving the towel. The young man goes to work with great enthusiasm and the wife soon has an enormous, room-shaking, earsplitting orgasm.

The elderly husband smiles triumphantly at the young man and says to him, "You see, you young schmuck? That's how you wave a towel!"