He said, "Well, you have played a good joke on me.

VOA: special.2009.02.07

I know you don't remember that far back, but in about the second lecture I made a joke of Professor Guttag which, you know, you didn't laugh at, he didn't laugh at, that's okay.

我知道你们可能不记得了，但是在大约是第二节课,我对Guttag开了个玩笑，你们懂得，你们没笑，他也没笑，这没什么。

麻省理工公开课 - 计算机科学及编程导论课程节选

When he heard the news, he thought it was a joke.

VOA: special.2009.11.10

He terms the rebel's announcement a joke as they are on the verge of being totally defeated.

VOA: standard.2009.04.26