The Rabbi listened to their story, stroked his beard and made the following suggestion.
They went home and followed the Rabbi’s advice.
They hired a handsome young man and he waved a towel over them as they made love.
It didn’t help and the wife was still unsatisfied.
Perplexed, they went back to the Rabbi.
‘Okay,’ he said to the husband, ‘Try it reversed. Have the young man make love to your wife and you wave the towel over them.’
Once again, they followed the Rabbi’s advice. They went home and hired the same strapping young man.
The young man got into bed with the wife and the husband waved the towel. The wife soon had an enormous, room-shaking orgasm.
The husband smiled, looked at the young man and said to him triumphantly, ‘You see, you schmuck. THAT’S how you wave a towel!’