My brother is such a person. It is true C no joke.

VOA: special.2009.07.19

That seems like a bad joke,but if the body theory is right, it's not a joke at all.

又是一个冷笑话，但如果肉体主义者是对的，这就不是开玩笑了。

耶鲁公开课 - 死亡课程节选

Before you go, it is the weekend, I will send you off with a joke.

在离开之前，现在已经是周末了，我会给你们讲个笑话。

麻省理工公开课 - 固态化学导论课程节选