YOU SAID:
everyone is stupid except me
INTO JAPANESE
誰も私以外は馬鹿だ
BACK INTO ENGLISH
Nobody is stupid except me.
INTO JAPANESE
私を除いて誰も愚かではない。
BACK INTO ENGLISH
Everyone except me is not stupid.
INTO JAPANESE
私以外の誰もが愚かではない。
BACK INTO ENGLISH
Everyone except me is not stupid.
That didn't even make that much sense in English.