YOU SAID:
I don't know you from a bar of soap
INTO JAPANESE
私は石鹸の棒からあなたを知らない
BACK INTO ENGLISH
I do not know you from a bar of soap
INTO JAPANESE
私は石鹸の棒からあなたを知らない
BACK INTO ENGLISH
I do not know you from a bar of soap
That didn't even make that much sense in English.