Two couples went on a vacation together. One of the men stated, "Our sex life has become routine and fairly predictable, don't you ever get tired of your wife?"

"I know exactly what you mean, I wonder if our wives will consent to swapping."

Much to their amazement the women consented to the arrangement. Early the next morning the husbands compared notes. "How was it?"

"Wonderful, I haven't had this much fun in ages!"

"Me, too. Now let's go see how the ladies made out."