YOU SAID:
Ur mom is the slayest slay ever
INTO JAPANESE
あなたのお母さんは史上最も殺人者です
BACK INTO ENGLISH
your mother is the greatest murderer of all time
INTO JAPANESE
あなたの母親は史上最大の殺人者です
BACK INTO ENGLISH
your mother is the greatest murderer of all time
That didn't even make that much sense in English.