Secret to a long Marriage.....

A couple was celebrating their golden wedding anniversary. Their domestictranquility had long been the talk of the town. A local newspaper reporterwas inquiring as to the secret of their long and happy marriage."Well, it dates back to our honeymoon," explained the man. "We visited theGrand Canyon and took a trip down to the bottom on the canyon by pack mule.We hadn't gone too far when my wife's mule stumbled. My wife quietly said,'That's once.'We proceeded a little further and the mule stumbled again. Once more my wifequietly said, 'That's twice.' Hadn't gone a half- mile when the mulestumbled the third time. My wife quietly removed a revolver from her pocketand shot the mule dead. I started to yell at her for her treatment of themule when she looked at me and quietly said 'That's once."