YOU SAID:
If you don't shut your crusty musty
INTO JAPANESE
無愛想なカビを閉めないと
BACK INTO ENGLISH
I have to close the ruthless mold
INTO JAPANESE
私は冷酷な型を閉じなければなりません
BACK INTO ENGLISH
I have to close the ruthless mold
That didn't even make that much sense in English.