YOU SAID:

I think you are stupid, sir

INTO JAPANESE

私はあなたが愚かだと思う

BACK INTO ENGLISH

I think you are stupid

INTO JAPANESE

私はあなたがばかだと思う

BACK INTO ENGLISH

I think you are a fool

INTO JAPANESE

私はあなたがばかだと思う

BACK INTO ENGLISH

I think you are a fool