Little boy:   Daddy, I want to get married.
Father jokingly said:   Oh!  Who did you have in mind?
Little boy:   Grandma.
Father:   Wait a minute, you did not think I'd let you marry my mother, did you?
Little boy:  Why not?   You married mine.

中文翻译：

小男孩：爸爸，我想结婚。
爸爸打趣地问道：噢！谁是你心中合适的人选？
小男孩：奶奶。
爸爸：等一下，你认为我会让你娶我的妈妈？
小男孩：为什么不？你娶了我的妈妈。