YOU SAID:
you are stupid, you know that?
INTO JAPANESE
あなたは愚かです、あなたはそれを知っていますか?
BACK INTO ENGLISH
You are stupid, do you know it?
INTO JAPANESE
あなたは愚かです、あなたはそれを知っていますか?
BACK INTO ENGLISH
You are stupid, do you know it?
That didn't even make that much sense in English.