英汉双语笑话：家丑不可外扬

Domestic shame should not be published
　　Teacher of Physical Education: Have you ever seen mixed doubles, boys?
　　Nick: Yes, sir. Quite often. I saw it even last night.
　　Teacher: Please tell us something about it.
　　Nick: Oh, sorry, sir. My father always says, 'Domestic shame should not be published.'