これは、冗談なんかじゃないんだ。の英語

This isn't a joke.

This is not a joke.

I'm not kidding about this.

It is no joke.

It's nothing but a kind of joke.

I don't like this kind of joke.

I don't like these kinds of jokes.

This is a joke.

That joke isn't funny.

It's not a joke.

It isn't a joke.

It's no joke.

I didn't get the joke.

This was meant as a joke.

This is a joke.

That is a funny joke, isn't it?

I missed the point of the joke.

It is far from a joke.

It is nothing but a joke.

It's no joke.

I don't feel like joking.

I'm afraid not.

I just meant it as a joke.

It was nothing but a joke.

It was only a joke.

No one caught on to the joke.

not seriously but jokingly

I am in no mood for joking.

I cannot help laughing at the joke.

Is this a joke?