YOU SAID:
Finger bang your sister,you freak
INTO JAPANESE
あなたの妹に指を強打させ、あなたはおかしくなります
BACK INTO ENGLISH
Make your sister bang a finger and you get weird
INTO JAPANESE
あなたの姉妹が指をバタバタさせるとあなたは変に
BACK INTO ENGLISH
If your sister slams your finger
INTO JAPANESE
あなたの妹があなたの指を叩くなら
BACK INTO ENGLISH
If your sister strikes your finger
INTO JAPANESE
あなたの妹があなたの指を打つなら
BACK INTO ENGLISH
If your sister strikes your finger
That didn't even make that much sense in English.