Fred himself was unable to satisfy his wife. He tried hundreds of methods but just wasn't able to do the job. He finally went to his best friend and asked for advice. His friend told him not to worry because he knew a method that was a 100% successful.
He said, "Hire a well-hung young stud to stand near your bed and wave a huge towel over both of you while you are having sex. This way your wife will be stimulated and have an orgasm."

The guy hired the stud, but all efforts were in vain. He went back to his friend and told him what happened. So his friend suggested that they switch places.

"Why don't you wave the towel while the stud does the job in bed," says the friend. Poor Fred agreed, saying he would do anything to satisfy his wife. He hired the same guy again and this time they traded positions.
Naturally, the wife had a divine orgasm.

The husband leaned over to the young stud and said, "You see!! That's how you wave the fucking towel!"