YOU SAID:

That has to become an in joke now

INTO JAPANESE

今の冗談になること、します。

BACK INTO ENGLISH

You want that to be a joke right now.

INTO JAPANESE

今冗談であること必要。

BACK INTO ENGLISH

Must be joking now.

INTO JAPANESE

今冗談する必要があります。

BACK INTO ENGLISH

There should now be a joke.

INTO JAPANESE

今冗談必要があります。

BACK INTO ENGLISH

Now you must kidding.

INTO JAPANESE

今、あなたは冗談する必要があります。

BACK INTO ENGLISH

Now, you are a joke.

INTO JAPANESE

今、あなたは冗談です。

BACK INTO ENGLISH

Now, you are a joke.