YOU SAID:
My sister is a fat donkey
INTO JAPANESE
私の妹は太ったロバです
BACK INTO ENGLISH
My sister is a fat ass
INTO JAPANESE
私の妹は太ったお尻です
BACK INTO ENGLISH
My sister is fat ass
INTO JAPANESE
私の妹は太ったお尻です
BACK INTO ENGLISH
My sister is fat ass
That didn't even make that much sense in English.