YOU SAID:
I don't think he has all his marbles
INTO JAPANESE
私は彼がすべての彼の大理石を持っているとは思わない
BACK INTO ENGLISH
i don't think he's got all his marble
INTO JAPANESE
私は彼が彼のすべての大理石を持っているとは思わない
BACK INTO ENGLISH
i don't think he's got all his marble
That didn't even make that much sense in English.