"For once," he said, "the joke's on me. And it's not very funny."

“只一次，”他说，“玩笑开在了我身上。而且那并不是很有趣。”

《柯林斯英汉双解大词典》

He's not very funny.

他不是很有趣。

youdao

Many April Fool's jokes may end up being not very funny.

许多愚人节玩笑的结局并不是那么有趣。

youdao

I have some very funny stories about those, but now is not the time to do that, especially because we're being filmed.

关于这个我有点好段子,不过现在还不能说,尤其现在有人给咱录着呢

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There is also a long list of not very funny parodies.

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And this is kind of a funny story, but when you think about the tremendous numbers of Iraqi journalists who have been killed at checkpoints, it's not very funny at all.

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Not a very funny one, either: as he warned Mr Erdogan, it served to provide ammunition for those who want to keep his country out of Europe, by giving the impression that it might want to introduce Islamic rules.

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