YOU SAID:

Why are you so gosh darned stupid.

INTO JAPANESE

なぜあなたはそう、まあとびきりの愚かな。

BACK INTO ENGLISH

Why are you so well darned stupid.

INTO JAPANESE

なぜ、あなたもとびきりの愚かです。

BACK INTO ENGLISH

Why do you is pretty darned stupid.

INTO JAPANESE

なぜあなたは、とびきりの愚かな。

BACK INTO ENGLISH

Why you is pretty darned stupid.

INTO JAPANESE

なぜあなたはかなり愚かなとびきりです。

BACK INTO ENGLISH

This is why you darned pretty silly.

INTO JAPANESE

だからこそ、あなたはかなり愚かなとびきりです。

BACK INTO ENGLISH

That's why you're darned pretty silly.

INTO JAPANESE

だからこそあなたはかなり愚かなとびきりのしています。

BACK INTO ENGLISH

That's why you has been darned pretty silly.

INTO JAPANESE

だからこそあなたはかなり愚かなとびきりされています。

BACK INTO ENGLISH

That's why you are darned pretty silly.

INTO JAPANESE

だからこそあなたはかなり愚かなとびきりのです。

BACK INTO ENGLISH

That's why you are darned pretty silly.