It is not a wildly funny play.

这并不是一出太滑稽的戏剧。

《牛津词典》

Believe it or not, 80% of netizens use it under the meaning of "It is not funny at all, but I have to smile."

信不信由你，80%的网友用这个词的意思是“一点都不好笑，但我不得不笑”。

youdao

They used to laugh at my Shanghainese, because it was not one single word they felt funny, but the tone of the whole sentence was really weird.

他们以前老笑我说上海话，因为我的好笑不是说哪个词好笑，而是说我的整个音调就很奇怪。

youdao

As long as people think the show is funny, it does not matter who tells the jokes."

VOA: special.2009.10.11

So it turns out whoever thought of this was either being funny or just not creative that day.

所以结果是，那个时候无论是谁想出的这个，要么是可笑的,要么是没创造性的。

哈佛公开课 - 计算机科学课程节选

but it is to look at this and see the audience not laughing and not having... It is funny, you know.

但在一边看着观众不笑不动……也是件很有趣的事情。

街头表演很有趣 - SpeakingMax英语口语达人

It's not so funny that it has taken so long to reach this logical conclusion.

WSJ: 'Network Neutrality'? Never Mind.

But if you are uninsured and middle class, it's not funny.

NPR: 6 min 38 sec

Dr. THOMAS: And it's not funny for the frog.

NPR: Mole-Rats, Ants Making Science Headlines