YOU SAID:
that's why you're dumb
INTO JAPANESE
だからあなたは馬鹿です
BACK INTO ENGLISH
So you are an idiot
INTO JAPANESE
何だと? バカ野郎
BACK INTO ENGLISH
You are an idiot.
INTO JAPANESE
何だと? バカ野郎
BACK INTO ENGLISH
You are an idiot.
That didn't even make that much sense in English.