A couple was celebrating their golden wedding anniversary.©JOKEDEMO.COM

Their domestic tranquillity had long been the talk of the town. A local newspaper reporter was inquiring as to the secret of their long and happy marriage.©JOKEDEMO.COM

"Well, it dates back to our honeymoon," explained the lady. "We visited the Grand Canyon and took a trip down to the bottom of the canyon by pack mule. We hadn't gone too far when my husband's mule Stumbled.©JOKEDEMO.COM

"My husband quietly said 'That's once.' We proceeded a little farther when the mule stumbled again. Once more my husband quietly said, 'That's twice.' We hadn't gone a half-mile when the mule stumbled a third time.©JOKEDEMO.COM

My husband promptly removed a revolver from his pocket and shot him.©JOKEDEMO.COM

I started to protest over his treatment of the mule when he looked at me and quietly said 'That's once.'"