YOU SAID:
My golly you are quite a devious chap!
INTO JAPANESE
私の愚かなあなたはかなりよこしまなやつです!
BACK INTO ENGLISH
My stupid you are pretty devious!
INTO JAPANESE
私の愚かなあなたはかなりよこしまです !
BACK INTO ENGLISH
My stupid you are pretty devious!
That didn't even make that much sense in English.