簡單的英語笑話:The first time, the second time, the third time

The first time, the second time, the third time
　　A couple was celebrating their golden wedding anniversary.
　　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.
　　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.
　　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.
　　My husband promptly removed a revolver* from his pocket and shot him.
　　I started to protest over his treatment of the mule when he looked at me and quietly said 'That's once.'第一次，第二次，第三次
　　一對夫婦在慶祝他們的金婚紀念。鎮上的鄰居都交口稱讚他們的家庭和睦，於是一位本地報紙的記者前來採訪，以希探尋他們長久和睦婚姻的原因。
　　“這得從我們蜜月旅行說起，”太太解釋道。“我們當時去大峽谷旅遊，各騎一條馱騾行走在峽谷底部。走了不多遠，我丈夫的驢絆了一跤。”
　　“我丈夫平靜地說‘第一次’，繼續走了一段後驢又絆了一跤，我丈夫依舊平靜地說‘第二次’，當我們走了半英里，驢絆了第三次。”
　　我丈夫迅速掏出手槍射死了驢。我開始抱怨丈夫，不該這麼對待馱騾。他平靜地看着我，說“第一次”。