YOU SAID:

you are dumber than a box of rocks

INTO JAPANESE

あなたは岩の箱よりも暗いです

BACK INTO ENGLISH

You are darker than the rock box

INTO JAPANESE

あなたはロックボックスより暗い

BACK INTO ENGLISH

You are darker than the lock box

INTO JAPANESE

あなたはロックボックスよりも暗いです

BACK INTO ENGLISH

You are darker than the lock box