Joke: How to make a marriage last

At my granddaughter's wedding, the DJ polled the guests to see who
had been married longest.

It turned out to be my husband and I.

The DJ asked us, "What advice would you give to the newly-married couple?"

I said, "The three most important words in a marriage are, 'You're
probably right.'"

Everyone then looked at my husband. He said, "She's probably right."