She’s Probably Right

At a wedding, the band leader polled the guests to see who had been married longest. It turned out to be the old and Mrs. Perfesser.
So he asked them, “What advice would you give to the newly-married couple?”
Mrs. Perfesser said, “The three most important words in a marriage are, ‘You’re probably right’.”
Everyone looked at the old perfesser. He said, “She’s probably right.”